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CNDE, T
00wNA
M915 Radiator Reverse Engineering Effort
SEPTEMBER 1990
Best Available Copy r DTICELECTEOCT 22 19S~E0
Christine RadleinU.S. Army Tank-Automotive CommandATTN: AMSTA-RGD
~~ Warren, MI 48397-5000
APPROVED FOR PUBLIC RELEASE:DISTRIBUTION UNLIMITED
U.S. ARMY TANK-AUTOMOTIVE COMMANDRESEARCH, DEVELOPMENT & ENGINEERING CENTERWarren, Michigan 48397-50000
NOTICES
This report is not to be construed as an official Department ofthe Army position.
Mention of any trade names or manufacturers in this report shallnot be construed as an official endorsement or approval of suchproducts or companies by the U.S. Government.
Destroy this report when it is no longer needed. Do not returnit to the originator.
R•GUT DOCUMENTATION b N M I.L 'M OM m
4. 111 W 5 Ismass geSep 1990
M915 Radiator Reverse Engineering Effort
7. &AMOM PL eemimg OnprwAlWtle f. ML
Christine L. Radlein 13504
9. P rm W@t Sa sA d Aiieeee IS. PWUHMTsa/W AMM U" N&
U.S. Army Tank-Automotive CommandAMSTA-RGD IL tofte-( w @,wE NeWarren, MI 48397-5000 4
a
IL. I aoftN t NMM MW ASOi .L3. Tye of foe A Ptudw cwm,
U.S. Army Tank-Automotive Command . Final Report
SFAE-CS-TVH April- May 1990
Warren, MI 48397-5000 114
Mom GU •N Lm• wseI JCLL 4
ýPerformance testr were conducted on two new M915 radiators todevelop requirements needed for solicitation of dew materiel sources.These requirements were not previously available to TACOM and due tothe lack of M915 .radiators in the Army Supply System, a need was warrantedfor requirement testing and development.)
Testing was conducted in-house at TACOM's air flow lab facility, ina joint effort between AMSTA-RGD and AMSTA-TBM, during the months of
April and May 1990.
rResults-were reviewed, adopted and provided to the sponsoring organization,SFAE-CS-TVH..
Radiator, cooling; heat transfer, performance requirements Coo 0r£r,•ac bA
/ ( )U WMwlt"----am T.aMs 7M9 15
I&13.6M ANG 2eu%~ fthea cum O gg" e 3. N of Pagesed Unclacsified 59
1 7 Unctladss•fi im d e at. e-\Unclassified________
2
TABLE OF CONTENTS
Section Page
1.0. INTRODUCTION . . . . . . . . . . . . . . .. .. . . ... 7
2.0. OBJECIVE.. . . . . . . . . . ... 7
3.0. COCLSIONS* ... . . ... . . . . ... 7
4.0. COMMEDAIONS . . . . . . . . . . . .T.OS 7
5.0. DISCUSSION . . . . . . . . . . . ... . . . . . . .. 75.1. Background .s . .c.t . . .n...r........... . . . . . . . . 75.2. Peland Limitations. Test. . . . . . ... . . . . . . . 85.3. Outline of Test. . . . ........ . . . . . . . . . 85.4. Test Materin o and i uis . ......... ...... 95.5.5 Test Procedures. .o . . . . . . 95.5.. Visual Inspectlion of Rdaos.. .. .. .. .. .. . .. 95.5.2. Preliminary Wter-Pressure Test . ......... . . .... 95.5.3. Air-Pressure Test. . . . . . . . . . . . . . . ..... . 95.5.4. Flushing of Radiators .e.R.e.i.s.a . s. . . . . ... . 95.5.9. Fill-Rate Test . . . . . . . . . . . . 9 . . .* 0 1a5.5.6. Maximum Free-Flow Rate Test .. .. .. .. .. .. .. . .. 95.5.7. Pressure-Cap Test. ... 0. . . . . . . . . .9
5.6. Radiator Configuration ................... 11
5.7.3. Air-Pressure Test . . . . . . . .. ... . . . . . . 115.7.4. Flushing of Radiators . . . . . . . . . . . . . . . .155.7.5. Fill-Rate Test ............... . . . . . 155.7.6. Maximimn Free-Flow Rate Test . . . . . . . . . . . . . . .. 155.7.7. Pressure-Cap Test . . . . . . . . . * . . a . * . . . * * 15
5.7.9. Finll Pressure Test. . . . . . . . . . . . . . . . . . . . . 155..6 Maiu FreFo Rat Tes . . . . . . . . . . . . . . . . . 15
5.8. Discussion of Results....... . . . . . . . . . . . . . . 155.9. Oter ... .. .. .. .. .. .. .. .. .. .. .. . .. 15
APPENDIX A. M915 Radiator Test Requirements Data . . . . . . . . . A-iAPPENDIX B. M915 Radiator Test Results Data . . . . . . . ... . . . B-1
DISTRIBUTION LIST. . . . . . . . . . . . . . . . . . . . . . . . .Dist-l
3
///
4
/
K
N
N
LIST OF ILLUSTRATIONS
Figure Title Page
5-1. Maximum Free-Flow Rate Test Set-Up . . . . . . . . . . . .. 10
5-2. M915 Radiator Configuration .... ..... ... ..... 12
5-3. Radiator Quality Deficiencies, Test Saimple #1. . . . . . . . 13
5-4. Radiator )iality Deficiencies, Test Sample #2. . . . . . . . 14
LIST CP TABLES
Table Title Page
5-1 Heat-Transfer Test Conditions. 9 . . ... . .. 9
B-I Fill-Rate Test Restsults ................... B-5
B-2 Maximum Free-Flo Rate Test. . . . . . . . . . . . . . . . .B-5
B-3 Heat-Rejection Data, Radiator Sample #1 . . . . . ..... B-7
B-4 Heat-Rejection Data, Radiator Sample #2 ........... 8-9
5 al momee, . .
air.
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- - -a. -
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6
1.0. INTRODUCTION
This report describes the cooling test program of the M915 tractor truckradiator which was conducted to develop the performance requirementsneeded for cumpetitive procurement. The test requirements and reportware developed by the Transmissions and Integration Branch of thePropulsion Systems Division, U.S. Army Tank-Autamotive Ccmnand (TACCM).
2.0. (BJECTIVE
The primary objective of this program was to conduct cooling performancetesting of two new radiators to develop performance requirements forinclusion onto a level-3 drawing to be used for campetitive procurement.
3.0. CONCLUSIONS
3.1. The heat rejection for the power pack is approximately 10,650BTU/min (10,250 BTU/min for engine, 400 BTU/min for transmission andother canponents) (see Appendix A). This radiator was able to meet thecooling requirement for each test run, based on test derivation frcmMIL-R-45306C.
4.0. RECOMMEDATIONS
4.1. Use the test data as performance criteria and ccmbine with otherstandard radiator requirements for incorporation into a M915 radiatorlevel-3 drawing (see Appendix B).
4.2. Perform similar testing on all other military radiators withoutgoverment-oaned TDPs to develop individual radiator performancerequirements. This would preclude shortage problems arising fram sole-source acquisition.
4.3. Establish an improved quality inspection procedure for theradiators either at the manufacturer's facilities or upon arrival atArmy depots.
5.0. DISCUSSION
5.1. Background
The lack of radiators in the Army Supply System and the delays indelivery from the sole-source supplier created a need to investigateadditional sources. In order to solicit additional sources, radiatorperformance requirements were needed. The absence of a government-ownedTechnical Data Package (TDP) brought about this investigation to developperformance requirenents for the subject radiator.
7
The performance testing was conducted at TACG4' S Air Flow Laboratory from
April 1990 through May 1990.
5.2. Scope and Limitations
The unavailability of radiators in the Army Supply System limited the amount
of sauples to be used for esting. The two test radiators were received from
the depot's latest shipment of newly produced radiators delivered by the
manufacturer. The scope of this report will cover the testing that was
performed and the development of performance requirements for the M915
radiator.
5.3. Outline of Test
The test program consisted of the following operations:
Determination of cooling requirements.
Development of chedc-out procedures and performance tests.
Installation and instrumentation of radiator.
Collection of test data.
Cleaning and preparation of radiator for return shipment.
Evaluation and reporting of test results.
5.4. Test Material and Equipment
Two (2) M915 radiators, NSN 2930-01-482-7922, ware obtained from themanufacturer and were used in this test program.
TACGM's Air Flow Laboratory and associated equipment and instrumentation ware
used to perform the testing. During heat-rejection testing, 18 thermocouples
ware gridded and placed on each side of the radiator core to measure theaverage inlet and outlet air temperatures. Quartz thermometers ware used to
measure the inlet and outlet water teuperatures.
5.5. Test Procedures
As no test procedure was available for this radiator, MIL-R-45306C,"Radiators, Engine Cooling, Industrial" (see Appendix A) was used to derive
test points for the heat-rejection data. Additional tests such as the fill-
rate test, maximum free-flow rate test, and pressure-cap test were included
in the test plan and were performed to provide additional radiatorperformance data. These tests ware obtained from the TACCM Cooling System
Design Guide. Testing of the radiators was conducted in various steps to
insure proper accuracy and to determine radiator characteristics. The
details oZ these steps are described below:
8
5.5.1. Visual Inspection of Radiators. Visual inspection was performed todoc-ment any noticeable external defects.
5.5.2. Preliminary Water-Pressure Test. With all ports blocked, theradiator was ocmpletely filled with water and pressurized to 20 psig. Theradiator was then checked for leakage, and results ware recorded.
5.5.3. Air-Pressure Test. An air hose was connected to the radiator and 2
with all ports blocked, was pressurized to 20 psig. The radiator was then
submerged in a reservoir of water and was inspected for air leaks. Results
were recorded.
5.5.4. Flushing of Radiators. The radiators ware thoroughly flushed with
water until a clean fluid was seen exiting the radiator. This was done to
ensure that no deposits would be present during testing of the coolingsystem.
5.5.5. Fill-Rate Test. With the outlet port blocked, the radiator was
filled to 90 percent capacity, and the fill time was recorded. This
procedure was conducted to ensure that a five-minute time limit was met.
5.5.6. Maximum Free-Flow Rate Test. The radiator was suspended below a
receiving drum and connected to a water flow system. The water was adj.:.ted
so that a constant water level of one-half inch above inlet port of the
radiator was maintained. Flow measurements were recorded to determine z.a
maximum free-flow rate of the radiator (see figure 5-1).
5.5.7. Pressure-Cap Test. A standard pressure-cap testing device was used
to measure the relief valve setting of the cap.
5.5.8. Heat-Transfer and Core-Resistance Tests. The radiator was mounted in
a wind tunnel and was tested at 100, 105, and 125 percent of the rated
coolant flow specified in MIL-R-45306C. At each coolant-flow rate, the heat
rejection was determinad at the following air velocities:
COOLANT PLOW RAM AN VEniCOr(W"dP~
110
2100
1100
Ise 1W02800
9
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- 4-
4w
% Cu
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x(d
to
lip
Heat rejection was calculated according to the following equations:
A. Heat Transfer - Heat energy absorbed by air flow:
Q~4T
Wbere M - Air flow rate (lbw. /minute)Cp - Specific heat of air (Btu/lb, /F)'T - Air Tenperature Difference ('F)
B. Heat Transfer - Heat rejection from coolant flow:
Mhere m - Coolant flow rate (ibN,/minute)Cp - Specific heat of coolant (BTU/lbr•f /F)LT - Coolant Temperature Difference ("F)
5.5.9. Final Air-Pressure Test. The Preliminary Air-Pressure Test wasrepeated to ensure that no danage was made to the radiators during testing.
5.6. Radiator Configuration
The current configuration of the M915 radiators are crossflow heat exchangerswith uninterrupted plain-fin surfaces (see figure 5-2). The core area isapproximately 1200 square inches, and the coolant capacity is 17.25 gallons.
5.7. Test Results
The following paragraphs summarize the results of each test that wasperformed. Eor more detailed tabulated results, see Appendix B.
5.7.1. Visual Inspection of Radiators. Portions of the core were missingnear both the top and bottom tanks on both radiators. Figures 5-3 and 5-4show these deficiencies. Prior to start of the Preliminary Water-PressureTest, a thick yellow fluid was found inside sample #1. When the radiator wasfilled with water, this fluid floated to the top of the water. In sanple #2,before filling the radiator with water, a yellowish brown fluid was found.Chemical analysis revealed that the characteristics appeared to be similar tothose of a transmission oil fluid. A detailed test report of this analysiscan be found in Appendix B. No military specifications call for apreservative oil to be placed inside the radiator, however, the manufacturercould have placed the fluid on his own accord. These fluids were removed,and the radiators ware flushed clean before proceeding with the test.
5.7.2. Preliminarty vbter-Pressure Test. No leakage occurred in either ofthe two radiator test samples.
5.7.3. Air-Pressure Test. A small leak was noticed on radiator sanple #1from a bolt located below the radiator outlet on the lower tank. After theradiator was submerged for 30 minutes, the leak stopped.
11
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cc,
Cdto
132
ccJ
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14)
On radiator sample #2, a small leak was initially cited at the solderingjoint between the fillerneck and the top tank. This leak gradually becameworse and, upon stabilization, was measured at 21,660 ml/min (5.722 GPM).
5.7.4. Flushing of Radiators. Both test radiators were flushed out withwater to ensure that clean cooling systems would be used during the heattransfer test. During flushing, clean water was observed leaving bothradiators.
5.7.5. Fill Rate Test. In order to fill the radiator to 90 percentcapacity, an average fill rate of 0.29 minutes was recorded by bothradiators.
5.7.6. maximum Free-Flow Rate Test. After coolant flow was stabilized, anaverage measurement of 52.8 GPM was recorded for radiator sample #1 and 57.7GPM was recorded for radiator sample #2. Canbining test runs from bothradiators produced an average maximum free-flow rate of 55.3 GPI.
5.7.7. Pressure-Cap Test. The pressure caps of both radiator sanples weretested and measured 9.9 psi and 10 psi, respectively.
5.7.8. Heat-Transfer and Core-Resistance Tests. Four test runs, out of atotal of 18, were removed fron the final analysis. These four runs did notmeet the 5 percent-difference specification between air heat rejection andcoolant heat rejection. Test data showed that the radiator met the coolingrequirements of the vehicle's powerpack.
5.7.9. Final Pressure Test. Radiator sample #1 did not show any signs ofleakage. Radiator sauple #2 had' repairs on the fillerneck but stillmaintained a small leak. This leak was measured to be approximately 997ml/min (0.263 GPM).
5.8. Discussion of Results
The resulting core-resistance data may look suspicious, as it does not agreewith those values found in MIL-R-45306C. It therefore must be reiteratedthat this specification was used solely as a test parameter design guide, andnot an a performance guide. The resulting core-resistance data derived franthis testing did provide adequate cooling. If restriction on the radiatorswere too greeat ti'Un the cooling requirements of this radiator's coolingsystan would l i kely not have been met. The results of the neat-transfertesting proved trt this vehicle's cooling requirements were met by thisradiator design.
5.9. Other
Vibration and pressure-cycle tests were not included in this test plan/.These tests are destructive tests, and the radiator sanples that were/usedduring testing were on loan to TACCM. These tests are also known as1/structural tests, not performance tests, and the purpose of the testing ,asto determine perfnrmance requirements. 7
15
\.
16/
I \ \ •,16
I ! ~ l •* i q I •e lU ' llm pui pim , , ,i I '' 1 ' ' ,
APPENDIX A
M915 RADIATOR TEST REQUIREMENTS DTA
A-1
/
A-2
/
pakws Data
AN data MW tamsn Vm englse nopertin with fuel sstmn. weter pump lubricating all pump. cmiip mer luniedacil and ait cseaner:net Included we siseramaw. ton, opuondl equiptment and diciven cornoonenta. Date is tamed an uwersaon under SAE stsawd Ad .I Glo-m , ons of 500 lost 1160 mI siduwde (29.00 In. 1736 nuti Hg dry baromneverl. 650F (290 rj intake atr taruoprewure end 0.8 on.
19. nu) big wa vow pos pimrawn maing No. 2 diesa or a %uW corresponding to ASTM 02.
*eake Mean Etfecte Pisuwm *lRated Ptwe-PS1 lkhs) . * 176 11 21310 Peak Tonque -MS (kPa) ........ 203 f1 3991
Platen loeedS 2100 Rpm-ft/rmin. (MAI . . ...... ao ... 20 110.71Prltaon lorsepowsmr 0 2100 RIPM-ftp. (kWf .* 71 (131
0 1500 RPM-4W.(kW) . 4014301Idle $peed-RPM ......................................... 0Maximtum No Load Governed Speed-ýRPM 2400MAfximsum Overspeed Capebilty-RIPM-41 S Seond Maximnum) .* 2700Torque Avuliable at Ouath Engogwment-1600 fPM)-4b.-t IN-i)....................................53( 17191Thrust Seanngl Load Limit-Mazmuwm. lnarmittant-4b. (N........................................140.3 000
-Maxmum Continuoua-4bs. (NI.........................................700 13 000
Engline Deflen ama ed Performance up to Altitude-Maximum approved datttde v nen operated lin a transient oe t. mlA. ............ . . . . . ..... 1200 600)*Maximtum qpprved altitudem when Operated continually at faliude' ft. (ml..........................A00011 @M0I
AAsmbet Air Temperature Abve ~Which Outpu Should be mLnvted-Of C 0............................120(4919~
Chaert Glelm Reflacu Debt Sase on the Pollovin Variables at Conditione of Rated Power:
Coolant Tempereuam-OP10I (C. ..... 13(851 Air Intake eAsitriction-mn. 142 0 fmn 142 0 ............ 10 1260)WaterInlet Pressure-PSI (kPa . .......... 7 (601 Air Intake Temperatunt-OF 100...................85 (291back Pwaaeur-PSl (kPa) .. ............. 35 2401 E11110st RestIction-n. NogY NO g................2.0 (50)
PGEIP. OUTPUT SPEED TORQUE AIR PLOM? EXHAUST GASIORY)? WATER FLOWM HEAT REJ.?RATIN CURVE oP Ram I.E-PT. CPM CFM TEWP.a U.S. 0PM VTUIMIN.
'4 334 lt) leN...1) (literm fvt/elý () (literl kWWI
Pull Palmer 400 2100 1000 1l60 2366 900. 140 10.250(296) (1356) I4961 11116) 1482) 15.8 113110)
Peel TOM"u 223 1500 1150 6m 1700 1100 100 71760415% Tersue Rise) (245) 1155111 (2932) I302) low$ 6)11271
Coolin Check Point
Optimnal Redep
E114"a PERF. OUTPUT SPEED TORQUE ENGINE PIMP. OUTPUT SPEED OWRATINGS1 CURVE PIP FAM IE-PT. RATINGS CURVEN 8P Rpm L11T
WIk ~ (UN. 1111"N..
PON Power 370 2100 m2M111) 1(1254)
Peak Torque 328 1IS0 1150(24% Teique Mai.. 12461 (15115)
A-4
Ism
NiL-,t-45306C3 Ma 193-$UrsaEDI.NI, ILt4530653 July 1973
MILITARY SPECIFICATION
RADIATORS, ENCINE COOLIG, DWUSTRIAL
This specificatioc is approved for use by all Departments and Agenciesof the Department of Defense.
1. 5013
1.1 ft95e. ýThis specification covers coolant radiators for liquid-cooled,industAW internsl-cambustion engines of 10 horsepower and above.
1.2 Classification. The radiators shall be of the 'following types,. asspecified (see 6.2): -* * ... •-
* Type I - Soldered-tank radiator.
"Type 1 1- Iolted-tank radiator with replaceable corez.
2. AMPLICANLE DOCDNElS -
2.1 Governent documents.
2.1.1 Specifications and standards. Unless otherwise specified (soe 6.2), thefollowing specifications and standards of the issue listed in that issue of theDepartment of Defense Index of Specifications and Standards (DoDISS) specified inthe solicitation, form a part of this specification to the extent specifiedherein.
SPECIFICATIOnS
VVL-8-00 - Lubrication Oil, General Purpose, Preservative(Wat'er-Displacing, Loa Temperature).
Beneficial rcmients (recommeudations, additions, deletions) and any pertinentjdata which may beof use in improving this document should be addressed to: USArmy Mobility Equipment Research and Development Comsand, ATTN: DltDM-DS, Fort
jielvoir, VA 22060 by using the self-addressed Standardization Doluwmnt•Improvement Proposal (DD Form 1426) appearing at the end of this document or byIletter.
FSC 2930
A-5
MIL-145306C
M?~~1-40Boxes, Wood, Cleated.-Plyvood.PFF-3-636 some, Shippiago 7iberbeerd.
• .,. . .. .• . .
MILXEARY
KIL-P-116 Prae~rvatio., Miethods of.HIL-C-5501 -Cap and Plus$ Protective, Dust sea Moisturer-
MIL-G-12303 -Gasket Materiat, Nometallic.L-T-220,5 - Tap.• Pressure-Semative, Adhesive.
Preseryatios en Sealing
MILITARY
HIL-STID-105 - mqilin ?roceoduries aed Tables forInspeoctipbiy. Attributes.*
NIL-4TD-129 - ark~ing-for. Sip~men and Storsge.MIIL-STD-130 -IdentiftcatioG Marking of DS
o ilitary. Propert.
IL-s-1a, - Dissimila, Metal-.NIL-SDI ~ . .- rcial Packaging of Supplies'
5L--S0 -~ Zq ndPui ,Prt. c/e u i osue
NS35773 -Radiators, E9ngine Cooling. Industrial.N535834 -- Cores , Radiators, Engime Cooling,
Indusatial;
I,-. -,. 803- ~ke I~m•J. -~~ralc
N(Copies of specifications, and staedards reusired by contractors in connectionwith specific acquisition functions should be obtained from the contractingactivity or as directed by the contracting officer.)
2.2 Other publications. The following doc, -t(s) form a part of thisspecification to the extent specified herein. The Issues of the docinnuts which
Oare indicated as DoD adopted shall be the issue listed in the curre t DoDISS andthe supplent thereto, if applicable.
AMERICAN •AUONAL STAMDA*DS INSTITUT (ANSI)S .. .. • -U
"A ASIIASTH 3-36 - rasi Plate, Sheet- Strip n'md Rolled Bar,ANSIIAST-• -152 - Copper. Sheet, Strip, Plate*, id Rld to1 ar.
(Application for copies should be addressed to the Amricam Netional Stadards-.hotitute, Inc., 1430 Broadway,..N York, MY 1001S).
AWAUCAN SOCIETY POR TESTING AND MATERIALS (ATMI)
A30- - 8Wine Plates.
(Application for copies should be addressed to the American Society for Testingand Materials, 1916 Race Street. Thiladelphia, ?A 19103.)
A-6
-IL-g,, 530,C
(Industry associatin specifications ;ad standards are generally calilable i forreference fro libraries. They are also distributed saong technical groups adusing. Federal agencies.)
2.3 Order of precedene. In the event of a conflict between the text of thisspecification and the references cited herein, the text of this specificationshall take precedence.
3. REQUI3VENTS
3.1 Description. The radiators and cores shall be as shown on M535773,13355884, and as specified herein.
3.2 First article (first-produced- radiator and core).. The contractor shallfurnish one or more radiators and cores as specified (see 6,2), for exfminationand tests within the time frme specified (see 6.2), to prove prior to startingproduction, that&his production methods will produce radiators and cores thatcomly with the requirements of this specification. amaination and tests shallbe as specified in Section 4 and unless otherwise specified herein, allexamination and tests shall be conducted by the contractor subject tosurveillance and approval by the Govenment (see 6.3). When specified (see 6.2),the Government will conduct an.y or all of the preproouction examination and tests.
3.3 Materials. Materials shall be as specified herein and as shown onapplicable standarde. Materials not specified shall be selected by thecontractor and shall be subject to all provisions of this specification (see 6.5).
3.3.1 Copper tubing; -Tubes shall be copper, red brass, or naval brass with 85percent copper and 15 percent zinc. Tubing shall not be subject to -
dezincification and resultant corrosion.
3.3.2 Sheet copper, Sheet copper for fins shall conform to ANSI/AS7h 5312.
3.3.3 Sheet brass. Sheet brass for tanks and header plates shall conform to
3.3.4 Terne plate. Teruoe plate for side members for 'type I rasliators shallconform to AMTI 30S Tame Plate, with LT-35 coating thickness as a sinimm.
3.3.5 Casket. Casket material shall conform to M1l-C-12803' Type I, identifi-cation number ?1161A.
3.3.6 Dissimilar Metals. Dissimilar metals at defined in MIL-STD-489 shallnot be used in intimate contact without suitable protection in order to preventor minimize galvanic corrosion.
3.3.7 Identification of meterials and finishes. The contractor shall identifythe specific material, material finish, or treatment for use with components andsubcosponents. This information shall be available, upon request, to thecontacting officer or his or her designated representative.
A-7
p. KLL-I-45306C
3.3.8 Material deterioration mad control. V". radiatorsshl be fabricatedfrom, compatible materials, i~herently corrosion resistant or- treated to provideProtectiom against the wariots korue of corrosion ad deterioration that %my beencoutered in any of the. applicable storage and operating enviromments to whichthe item may be expos"d.
3.4 Fins and tubes. The core assembly shell be of the tube'and plate-fin*construction with the fine perpensiiclular to and in close contact with the tubes.
._3.5. 1. Rest rejection and core resistance. The heat rejection and core
resistance curvet of the test core shall be coware-rd with.the correspondiaig heat i
rejection and core resistance curves of the standrd core. A fan curve at.:standard air density (0.075 lbs/cu. ft.) shall be drawn through tho standard core
resistance points at the 1500, 1800 and 2100 feet per minute air velocityCa ppints. The point at. which the fan curve intersects the test core resiistance
* curve-shali be'projected onto iti respectives heat- rejection curve'* When compared..to the. standard core values, the projected core values- shall coniorm to the
7,values' stated on sheet A of HS35773. -.
L35-Na eeto oprsn The comparison between beat rejection (air
gain) and beat. rejection (water loss) shall not exceed 5 pireont.
3.5.3 Di-tortion. When tested as specified in 4.5*..3, the radiator and core4shall show no leakage or permauent distortion exceeding 1/8 inch. 1
3.5.4 Vibration and lesakjxe. The- radiator or~core-,hean.vibrated as specified
-in 4.5.2.4 at the most critical resonant frequency shall'show no evidence of.structural damage, seepage, or lealrage.
3.6 Identification marking. Radiators and type 11 cores shall be identifiedin accordance with ?IIL-STD-130. A metal identification plate shall be
permanently affixed to the side of the top tack of each radiator near the water
to the side of the type 11 core. Marking shall include the following information
Military standard radiatorWU part numberManufacturer's nme or trademark
3.7 Finishinit and painting. Unless otherwise specified (see 6.2). the
*r.di-ator and core shall be finished and painted in accordance with thecoutractor's standard practice.-
3.8 Type ..!* The type I soldered-tack radiator shall be as shown on MS3S773,
part numbers -1, -2, -3, -9 or -10, as specified (see 6.2).
3.9 Type 11. Bolted-tink radiator with replaceable core, type 11, shall be as
shown on MS 35773, part numbers -4, -5, '-6, -7, or -8, as specified (see 6.2).
A-8
KlL-I-45306C
3.10 Vorkmaiship. '4
3.10.1 Cleaning. Ihe completed radiator and cores shall be cleaned and freefrom defects such as dirt3 sand, metal chips, mat, cracks, and other foreignmaterials or defects that could impair their serviceability. Water from thecleaned radiator. or cores shall: uot show a "pH" change of greater than 1, thechloride content shall not exceed 75 parts per million, nor shall there be achange in chlorine content no greater than 75 parts per zillion when comparedwith water before rinsing.
3.10.2 Soldering. Soldering of the overflov tube to the filler neck and thefiller neck to the radiator top tank shall not interfere with the properoperation of the pressure cap. 'In the event any soldering is done to parts afterthe radiator or core has" been cleaned, the radiator or core shall be cleanedagain after the soldering operation.
3.10.3 Header plates.* Thgasket area,. th corresponaing boltholes, and the "bolthead arts of the headetilates used on type I1 radiators shall be free of.solder lamps and a water resistant nonhardening cement shall be used on thegaskets when the core is assembled to the tanks.
4. QUALITY.ASSURANCE POVISIONS .
4.1 Resionsibilitl for inspection. •nless otherwise specified in the contractor purchase order, the contractor is responsible for the performance of allinspection requirements as specified herein. Except as othervise specified inthe contract or order,'the contractor may use'his own or any other facilitiessuitable for the performance of the inspection requirements specified herein,unless disapproved by the Government. The Government reserves the right toperform any of the inspections set forth in the specification where suchinspections are deemed necessary to assure "supplies and services conform to'prescribed requirements.
4.1.1 Componeni and material inspection. The contractor is responsible forinsuring that components and materials used are manufactured, examined, and
,tested in accordance with referenced specifications and standards.
4.1.2 Disassembly inspection. Failure of any test by the first-produced m6delshall be cause for disassembly, in the presence of a-Government representative,of the first-produced model to the extent necessary to determine the cause of thefailure. Each disassembled part shall be examined in detail for compliance withthis specification in regard to materials, dimensions, tolerances, andworkmanship. Parts not complying with such requirements shall be rejected.
4.2 Classif ica*ion ofi.nspection. Inspection shall be classified as-follows:
a. First-produced radiator inspection (see 4.3).b. Quality conformance inspection (see 4.4).c. Inspection of packaging (see 4.6).
4.3 First-produced radiator inspection.
4.'3.1 Kzisatioa. The first-produced radiator(,) sall be exaiý sospecified La 4.5.T. Presoene of one or more defects sslbe1 camse fre rejoction*f all first-produc*d radiator(s).
4.3.2 Tests, The first-produced radiatoT(s) *ball be teste as 'specified in4.5.2.1 through 4.5.2.5. failure of my7 test shall be cause for performing tbeinspection specified in 4.1.2.
4.4 Quality conforsamce inspection.
4.4.1 Mli.ng Smpling for eamination sad tests shall be in accordancewith ILSTD-105, Inspection Level II.
4.4.2 Examination.
4.4.2.1 Sgmples. Samples selected in accordsace with 4.4.1 shall be exminedas specified in 4.5.1. AQL shall be 2.5 percent defective for' major defects imd
., 4 percent defective for minor defects. "
*4.4.3 Tests.
* 4.4.3.1 !mples. Samples selected in accordance with 4.4.1 shall be tested as"speclfi*d in 4.5.2.1 through 4.5.2.5. AQL shall be 2.5 percent defective formajor defects sad 4 percent defective for mino defects.
4.5 Insiectiov procedure.
4.5A. Eamination. The radiators or core# shall be examined for the followingdefects:
major
101. Dimensions not as specified.102. Material not as specified.103. r• ering not as specified.104. triels are not corrosion resistant or treated to be made corrosion
&.-.istant for the applicable storage and operating enviroments.105. Ditosiuilar metals as defined in HIL-STD-$89 are not effectively
insulated from each other.106. Contractor does not have documentation available'for identification
of naterial, material finishes, or treatments.
Minor
201. Identification marking incorrect or illegible.202. Cleaning not as specified.203. Workmanship not as specified.
4.5.2 Tests.
A-19
x, IMr453OGC
4.3.2.1 Ceitioss. The f llwagcodftimi shell apply during the testsperfomed in accof7lae with thir specificatio as emlete radiators ad ccradiator areos wbom they are fur betseparatelyo Radiator corne furnisbedseparately shall be tested is ' futures i uck siulate, for test purposes, the topand bottom radiator tak. -. -
4.3.2.1.1 Supports. The rMadiaor or core shall be supported on its normalpoints of support and shall not be supported an a cradle or bracket which 4n any
way restrains the possible distortion of the radiator or core twan underpressure.
4.3.2.1.2 Equipment.' The tesot radiator or cers, a applicable, shall bemounted an a test stand. A circulatLnr pg' shall, be used to maintain an eventemperature in the water resrvoir. A flow pmp and piping shall be used toprovide water to the test radiator or core ad a thbrottlinS valve shall be usedto regulate the flow to' the desired te,4A variable speed fan or adjustabledampeers or louver s shall regulate the'airflow'to the test radiator or core.
4.5.2.1.3 Instrumentation*. Iastrmetation shall be provided to perform thefollowing functions:-
a. To measure the temperature in the waterline at. inlet and outlet to test
radiator or core - - -
b. To measure airflow in tre airduct. fWabn an orifice is used to measure
the airflow, a manometer shall be connected upstrem from the orifice to
indicate the static pressure in the duct.)c. To measure the pressure drop or the resistance to airflow across the core.
d. To measure the temperature of the airflow on each side of the core.
4.5.2.1.4 Control limits and data observations. The observed data zhall be
recorded. All points for each tesot shll be recorded only after all variables
have been stabilized. The degree of stabilization and accuracy of observationsshall be acceptable if the heat-rejection comparison conforms to 3.5.2.
4.5.2.1.5 Coolant. The coolant shall be water.
4.5.2.1.5.1 Coolant temperatures. The temperature of the water entering the
test section shall be between 170" F and 210* F.
4.5.2.1.6 Rest rejection. The heat rejection test shall be made using one of
the following test methods.
4.5.2.1.6.1 Heat rejection, test method (a). The core section shall be tested
in the wind tunnel at the- 100 percent waterf low r-ate and at 125 percent of the
rated vaterflov. If these selected values are not possible the core shall be
tested at not less than three vaterflow rates which bracket the 100 'nd 125
perc:ent rate for each radiator size. At each waterflow rate, the beat rejection
shall be determined at not less than four air velocities overlapping the range of
1.500 to 2,100 feet per minute as indicated on sheet 7 of MlS35773. The heat
A-II
\K
)aL-I-"5306C
rejected by the water and the heat gained by the air shall be sepamtelycalculated at each test condition. A performance-curve shall beappibted 0 shownan H535773, Figure 1 or 2, as applicable. The beat rejection =W:01 Xemtancevalues at 1,500. 1,800, and 2,100 feet per minute air velocity * sb= be tamenfrt= the performance curve and recorded. The difference between to test dh.aand standard core data shall be checked for conformance to 3.5.1.
4.5.2.1.6.2 Beat rejection, alternate test method (b). Whenasme assection is used for more than one radiator type and size, vaterfetrates mudair-v*elocity rates which overlap the entize range of required cdoJtionus sfl bechosen for test points on the sample core. All the air velocitiims hall bmtested at each chosen vaterflov rate. These results shall be pldmd as sh onHS35773, figure I or 2, as applicable. The varyinS waterflow ra•ssin ga&&Wusper minute can be plotted as a parameter on these curves. From:c.fe cura, across plot cap be made with heat rejecti:. in Btu/minute as the vstnace*vaterflow rates as the abscissa' and air velocity lines of 1,500, 1.8OO, -
2,100 feet per minute as the parameter. From this. cross plot, thtrequisufvalues can be obtained and recorded. The data thus obtained shdn be com-Vmod tothe standard core values of MS35773, Figures 1 and 2, as applicsfib. Thedifference between the test data and standard core data shall bec.ecktA trconformance to 3.5.1.
4.5.2.1.7 Air flov. Air flow through the test core section sia1l bf ftsmeither side.
4.5.2.1.8 Air-pressure-drop-corrections. The air-pressure-4ftp meama oentsshall be corrected to standard conditions by use of the followin:[Druzula
A- Corrected drop, in Jda.
p - Measured drop, in H2(-
AInlet air density, fcu. ft.
f .Standard air densit7, Q.075Lbm/cu. ft.
4.5.2.1.9 Vibration. The radiator shall be filled with tapvwe for thmn testspecified in 4.5.2.4. The radiator shall be supported as speci-b in 4,-=.1.1oland securely fastened tos rigid mounting bracket which shall betblted taithevibration table to insure that the motion of the radiator shalltbeessentizlythe same as the motion of the platform. Means shall be providedffir contnol1ingthe direction of vibration of the test machine and for adjustingamd meaazm.ngfrequencies avi amplitudes of vibration to keep then within preswibed as.
4.5.2.2 Heat rejection and core resistance. The radiator ortega, a#gapplicable, shall be tested as specified in 4.5.2.1.6 based onwtaad hea&rejection as defined in 6.4.12. These values may be determinedomia squaw-footbasis. These values shall then be corrected to the area in squa- feet.Nonconformance to 3.5.1 shall constitute failure of this test.
A-12
Jim
"N1L-R-45306C
x. 4,o.2.3 Pressure cycling. The complete radiator shall be tested with all"outlets closed. Pfessure, variable from atmospheric to 150 percent of cap-pressure not exceeding 16 psig, shall be applied at the Inlet using air, stem or
Sglycol and shall be maintained at a temperature of at least 212" F during thetest. When stem is used, means shall be provided to prevent the accumulation ofwater. The pressure cycling shall take place in 3 to 4 cetonds and at a rate of6 pressure cycles plus or minus 1 cycle per minute. The radiator shall be cycledto a minimam of 50,000 pressure cycles. 'The radiator shall be examinedperiodically for evidence of leakage or distortion. Only tube leaks andtube-to-header leaks, not to exceed three, shall be repaired or plugged before
_continuing the test. Any evidence-of leakage or aximma permanent distortion of.more than 1/8 inch shall constitute failure of this test.
'4.5.2.4 Vibration.
44.2.4.1 Resonace survey. The radiator which has been tested-in accordanceI
Zv wi&4.5;2.3 Zy be rebuilt or another radiator maybe used bor this test. Therradiator shall be tested for leakage prior to-start-of this test.:" The radiatorshall be prepared in accordance with 4.5.2.19 and vibrated at frequencies from -
A10 cps to 33 cps at the table displacements specified in' table I. The change infrequency shall be made at intervals of I cps and maintaLned at each frequency*for I minute. If resonance occurs at any point in the speifLed range, thefrequency of'vibration at that point' shall became the test condition for4.5.2.4.2.
".,, 4.5.2.4.2 Procedure. This teat shall be run after completion of 4.5.2;4.1 if.1; no leaks are obberved. The radiator shall be vibrated fdrcnot less than 24 hours
t -t the most critical resonant frequency. If no resouanci was observed, this testshall be performed at 33 cps at the displacement referenced in table I.--Theradiator shall be periodically. examined during the test for evidence of seepageand leakage. Nonconformance to 3.5.4 shall constitute failure of this test.
Table I. Table Displacements.
reguency range Total table displacement
cps inches10 to 15 ' 0.060 ±0.00616 to 23 0.050 ± 0.00526 to 33 0.040 0.005
4.5.2.5 vashing opreation. The radiator or core shall be filled withdistilled water or tapvater of known pM index (see 6.4.13), at a temperature of80. 1 to 100* F. The radiator shall then be shaken to assure thorough msiing andthen allowed to stand for I hour. At the end of the 1-hour period, 112 gallon ofthe contents shall be drained into a clean container and tested for pa change andchloride content. Nonconformance to 3.10.1 shall constitute failure of this test.
A-13
HeL-I-45306C
4.6 Insction of
4.6.1 Quality conformance iiiiection of Ipack.
4.6.1.1 Unit of product.- For the purpose of inspection, a completed peckprepared for shipment shall be considered a unit of product.
4.6.1.2 Sgpling. Sampling for exwination shall be in accordance withKIL-STD-105. • . "
4.6.1.3 Examination. Samples selected idi accordance with 4.6.1.2 shall beexamined for the following defects. AQL shall be 2.5 percent defective.
104. materials, methods, or containers not as specified for level A or 1.Each incorrect material, mctbod or container shall constitute onedefect.
105. Openings into radiators or replacement core-assemblies not sealed amspecified for level Auz --
106. Caskets not prqserved- as specified for level A.107. Cootents not immobilized within box as spetified for level A.108. Box closure and sealing not as specified for level A.109. Radiators or replacement core-assemblies of unlike description
packed together for level A or B. • f110. Quantities packed together exceed the weight limitation of the box f•
level A or S.v 111. Preservation or packing not in accordance with the referenced documen
as specified for commercial.112. Marking missing, illegible, incorrect, or incomplete for level A, 5
or conmercial. -
5. PACXAGINC
5.1 Preservation. Preservation shall be level A or comercial as specifiek(see 6.2).
5.1.1 Level A. Unles. otherwise specified (see 6.2) radiators or replacecore-assemblies shall not require application of a contact preservative. Whenspecified (see 6.2), slush or flush interior of radiators replacement core-assemblies with VV-L-80O tto insure complete coverage and thoroughly drainexcess. Openings into radiators or replacement core-assemblies shall be setlulwith tape conforming to MIL-T-22085, Type I1 or with caps or plugs of theappropriate size conforming to MIL-C-5501. The filler neck cap shall be secuxin place to prevent loss. Caskets for each replaceable core assembly shall aprotected with fiberboard stiffeners and shall be preserved in accordance wiitMIL-P-116, Method IC-l or IC-3. Each radiator or each replaceable core-asssP1ywith gaskets, shall then be placed in a close-ficting box conforming toPPP-3-636, class weather resistant, grade as applicable, style optional. Thecontents shall be blocked, braced or cushioned as applicable within the boxttoprevent movement or damage. &ox closure and sealing shall be as specifiedmethod V in the appt unLA to tbha boc :p4c2i• zt--o.
A-14
* a!,? ,Coercia1.;, :Zjac radiator orfelc tcrc y ~ Ushall:b~peevdi with 118. ' . -jr-t..tfl 1
5. P !kjng acking -shal be Itoni A#' level S or'cor s pcfe(804 4.,*2* - - 4'
3..> '!'A ladators- of Uk. 'dtscfptiMi or rpc t'o a Lies'of1km ~d erit~ pnreseve as specified in 5.1, shall be~ packd oete In acloser-4fttti4j b&k:cefo to PlP-is6l, noWrsa type,' Style pim, iquantities not' to Meaed thýV elnigt limitation of the haz. *1 cai CV1--T adstrapping shall-be In accordance with the appnix to the box spetifczatim.-
5.2.2 Level' 'Radiators or replacement core-asssmblies with gostskatshall bepacked as sp=cified in 5.2. 1 for 1"0e. A exept that bowes shall be dontic type.
3;; lds orso replacemsntco s liswtgaks," -'
presevetaspecfeCin-~i 5.1,: shall be packed in accordance- wth 18b
'5'£3;1twl ilftirvJ;" arkipg for-military levels, of p~rotectios' (lentl Ar ).shall be -in accordan-ce with- KMheflDnlZP,
£i3.2 - Caý rIai, Slarkiog for comrelal packaging shall be In a8ct 61anc-th NlfrSTh-1S-DB * A~~t t'4
6.1 Tnt-ndd use. The radiators covered by this specifictioe~sare MWforuse withb liqu-id-co-oled internal combustion engines to dissipate the he, fro the7
6.2 Ordeingudata* procurement docuents should specify the foloi g:
:0 Xitle mumber,- and date of this specifidation 4j- "'
b. Date of issue of DoDISS applicable and exceptions thereto (see 2.1.1).-c.' Type of radiator or core, when aftlicable, 'requiredi (see 1-2)-.do Time fraea required for submission of firat-produced radiator(s) and
- amber @1 radiators'required (see.32,. e0& Wen the CGovenment will'-conduct- any Or all of the, pTCreprodtioci Model
t ezainati*c antd tests. "vbWen 'the GAMore cill*",' cr votw but not -
all of the preproduction ez nastion cad -tests, -the contracti officer-'-should -specify which examinatioan uzd testg. will be- c cte byýh-Govenment, and which eamination and'Ptests. shall: be- c- -rt@ byte;contractor (see 3.2).A 4
.t 'nf. Finishing and painting when other than -as specified (sea 3.7).
g. Aplicble S pat nmberreqnred see .3)
g. Applicable US part number requzired (see 3.8).
i., Degree of preservation and degree of pac~ing required (see 5. 1 and 5.2).3.When interior of radiator or replaceaenc core-assemblies are to be
preserved (see 5.1.1).
A-15
I .- A
--C M
* .. 4.
KIL-"-5306C
6.3 First-2EgtLWed radiator. Any changes or deviatio= of production
radiators and cores a applicable, fro= the approved first-produced radiator
durin- production vill be mbjrct to the approval of the contracting officer.
Approval of the first-produced radiator will not relieve the contractor of his
"obligation to furnish radiators an cores as applicable, conforming to this
specification.
6.4 Definitions. For the purpose of this specification, the following
definitions shall apply.
6.4.1 Rated internal pressure. The rated internal pressure shall be 7 psi5
for radiators conforming to MS35773-1 through -10.
6.4.2 Standard air. Standard air shall be air at a temperature of 70" F, a
barometric pressure of.29.92 inches of, mrcury, and a density of 0.075 pound per
cubic foot. - -
6.4.3 Rated air velocit. iihe'ratd shall be thosi listed on
bheet 7 of KS35773. ..
6.4.4 Rated coolant flow. -The rated coolant flow shall be the flow lited on
sheet 7 of xS35773, and shall bR based on approximately a 10" F drop In coolant
tesperatu•p in the radiator.
6.4.5 Heat transfer - beat enetrg absorbed by air flow. The beat energy
absorbed by air flow is the product of the air flow, specific heat of air, and
air temperature rise.
Heat energy absorbed by air flow C•p AT
W a air flow rate, Lbe/Kin.
C; - 0.24 Btu/Lbu/OF
AT - air temp rise, *7
6.4.6 Heat transfer - the heat reection from ater flow. The beat rejection
from water flow is the product of the coolant flow, specific-beat of coolant and
coolant temperature drop.
Heat transfer (heat rejection frem water flow) WC AT
V - water flow rate,- bawne,
Cp - 1 Btu/Lbm/*F
AT - water temp drop, o7
6.4.7 Specific heat at constant pressure of water. The specific beat at
constant pressure of water shall be based on the average water tesperature. The
A-16
*.. .. +:+ -- *".+• . * b r .,.. • + -+ " +• " . * + -:+.++" *•+ .. + P +* • o +:+".
_7 -.. *
speifi- betat;iaeatawt pressure shall have th. value of 1 I P -owater tepereturei 014i! rn 76 i. - tul~ i r
"n o -t+ t -flcr+•++mm+•erm~ f----l -. ..r..... "-. k +'"'4 .r* -C + -+'• .... :++ +
r +6.4.1 js•pecfic btgeata co,,, nt pressure of The spcii-bamim -+ -ar~ oustant., pressur& o&taiwz shbelt -ve". the veine of 0-, It/b/ -1 fo ir - " '
,tsmpensturessup tJM5u *ýr pesure arudI (as.).
6...Av~eratewater teoerature, The average water tMWreturGýIto e'.radiator is the sum of the water inlet and outlet cm &raturee d by 2.
6.4.10 Iste centlat. Rated potential shell be deieda the mverag waterteperature Md r& tentering air t~emprature end shell hav a value of 601 F.
6.4l1 -Cbserved-ptnil Observed potential shalEbe defined as theobserved'average water tempearature minus the observed entering air tempretureduring heat-rejectice andý core-resistaice taes.
44 . " + +4•4j • '- . .. .. .. - b-+-
4A.4:2. 'Ratedhi betaenf&t; h rated heat- rejection selbttaLosre_heatre 15Ct~. 3t0i pet cte multiplied by the-rated potential act- divi-ded-by~the _..-.- 4--. s:-,-.
6.4.13- ~ ii~need The pH index shall. be deftinid h ngtviogerithK of the- hydrosaa-iou concentration per liter. A pig Index 3* f 7 is&'neutral solution~e A, Up8 ' lide~'of- loes than- 7 is an acidic solutiLon.. *A pr xZof gtreeter than rI t aWbdifii-:6@lution. ~-'
6.4,14, 'Rg Uhsoeai.zR zqnaWe is a condition of maulam magnifIicetion of an-h pplied iiraiccI4s; usually manifested by visibly increased, vibration ofthe .a~tei ig*,: :.ifinj)
6.5 Eec ci4iiiiriaiQ It is encouriged thee recycled sCtarlet b sdwepracticali*ionga•e-c eeas the requirements of the specifications 3,3).-• , -
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APPE.•DIX B
M915 RADIATOR TEST RESULTS DATA
B-1
S-2
NOTES:1. LEAKAGE:
THE RADIATOR, WITH ALL OPENINGS CLOSED,SHALL NOT LEAK IN EXCESS OF 5 CUBICCENT1METEPS PER MIN•UTE, NOR FROM MOF, THAk-ONE LOCATION, WIEN SUBJECTED TO 18 + 1PSIG AIR PRESSURE.
2. COOLING:RADIATOR COOLING PERFORMANCE SHALL MEETREQUIREMENTS AS SHOWN IN GRAPH, WITH INLETWATER TEPERATURE 180 t 5 OF.
HEAT TRANSFER FROM COOLANT (SrTuniNsoir0 AIR RIZ8ISTANCE
J J ~ ~Hl[N TlRANSFrER A,
P RESUNE DROP
310000.
2
5000 .
o 0 ,i0 500 1000 1500 2000 2500 3000
AIR VELOCITY (FPM)*WIG PRI[SURE (|NCHE OF HllD) (TIT 0D N 110. 111, A 134 *PM GOOLAMT)
3. FILL RATE TEST:WITH RADIATOR OUTM PM MED, THE TIME TOFILL THE RADTATOR TO 90% COOLING SYSTEMCAPACITY SHALL BE ACCOMPLISHED IN A 5MINUTE PERIOD.
4. MAXIMUM FREE FLOW RATE TEST:WITH THE RADIATOR SUSPENDED BEtL( ARECEIVING DRUM AND CONNECM TO A COOLANTFLOW SYSTEM, THE MAXIMUM FREE FLtO RATESHALL MEASURE 55 + 5 GPM.
6. PRESSURE CAP:THE PRESSURE CAP SHALL MEASURE 10 PSIG.
B-3
7. FAILURE:FAILURE T0 MEET NC'ES 1 THROUGH 4 WILLRESULT IN FAILURE OF THE RADIATOR.
8. FINISH:PRIME TO BEST CtMEPCIAL P .AC"ICE AM BECOMPATIBLE WITH MIL-E-528t 3A ANDMIL-E-52798A. COLOR BLACK.
9. INTERNAL CLEANLINESS:THE RADIATOR ASSELY SHALL BE CLEANED ANDBE FREE C DEE S AND FOREIGH MATERIAL.AFTER CLEANING, WATER FROMI HE CLEANEDRVOIATOR SALL NOT SHOW A "pH- 0I = OEGREATER THAN 1, AND A CHLORIDE CONTENTINCREASE OF GREATER THAN 75 PARTS PERMILLION WHEN OPARE TO THE INDUCED WATER.
10. R12VE ALL BURRS AM SHARP EDGES.
NOTES 1,8,9, & 10 TAKEN FROM 5-TON TRUCK RADIATOR
B-4
Fill-Rate Test ResultsTime to Fill to 90% Capacity (in minutes)
s Radi7at# .Adio•_#1 0:30 0:302 0:29 0-283 0:28 0:30
Average 0:29 0:.29
Table B-1.
Maximum Free-Flow Rate Test
(Gallons per Minute)
Test Rm Radiator# BadiaLr21 60.1 68.92 71.7 69.13 42.2 47.54 66.3 63.16 41.7 58.96 45.8 58.7
Average 62.8 57.7
Table B-2.
B-5
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BELVOIR FUELS AND LUBRICANTS RESEARCH FACILITY (SwRI)- CIULESRA ROAD-P.O.DAWER MU Ps24"11 . SAN ArONIO.TEXAS 7
BFLRF
File: 02-1955-18021 August 1990
CommanderU.S. Army Tank-Automotive CommandAttn: AMSTA-RGT (Ms. Christine Radlein)Warren, Michigan 48397-5000
Subject: Analysis of Fluids Drained From Radiators
Dear Sir.
Two fluid samples were received from TACOM for analysis. BFLRF was asked to identify thefluids if possible. The samples received were:
AL-19294-X Sample A, From Radiator No. 1AL-19295-X Sample B, From Radiator No. 2
Since the two samples were expected to be the same with the exception of water in AL-19294-X,only AL-19295-X was analyzed. The sample was analyzed by gas chromatography and infraredspectroscopy.
A simulated distillation, using gas chromatography, was conducted on Sample AL-19295-X alongwith two known samples for comparison. The two known samples were a transmission fluid anda light machine oil (Singer Sewing Machine Oil). The chromatograms are given in Figures 1through 3. Sample AL- 19295-X is nearly identical in boiling point distribution to the two knownsamples, indicating that it is most likely a light weight (approximately 10 weight) oil such as atransmission fluid.
Figure 4 is the infrared (IR) spectra for Sample AL-19295-X. The peaks at 2920 cm-n, 1460*cm', and 1380 cm' are consistent with the peaks from C-H groups. The other minor peaks aremost likely due to trace contaminants or additives. The peak at approximately 3420 cm" is dueto water in the sample.
B-11
AMSTA-RGT (Ms. Christine Radlein)U.S. Army Tank-Automotive Command21 August 1990Page 2
In conclusion, the data indicate that the fluids received from TACOM arm some type of lightweight oil. If there are any questions concerning the analyses, please contact Steve Westbrookat (512) 522-3185.
Very truly yours,
SJ. Lestz, Director
S.R. WestbrookSenior Research Scientist
SJIJSRW/Iap(SRW.BB)
cf: U.S. Army Belvoir Research, Development and Engineering Center, Attn:STRBE-VF, Messrs. M.E. LePera and T.C. Bowen
Belvoir Fuels and Lubricants Research Facility (SwRI), Attn: Mr. L.L Stavinoha
////
3-.12 •,
"Kx
I~a I II IPI'I~i I III II • I • IIIII II I II l'a I n I l' "J ili N l la. 11,ml 1 m q•.
S4.- Internal Standards
Figure 1. GC SimulatedDistillation of Sample
AL-1929S-X
21
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Figuret 2. GC SimulatedDistillation of Automatic U, 4
Transmission Fluid i r
,I \
40 4,0 A .N L2 Isr 1v l.w U,13 '. 7 3,.28 r. 00AT in minutes
II *
Figure 3. GC SimulatedDistillation of Light 17. 74,
Machine Oil rI ..
a. '
~.ýW 4. S L~ 2 JE 1*0 P2.1Is V. ? I 39. 1.702RT in minutes
B-1 3
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en-
B-1
DISTRIBUTION LIST
Copies
CmnanderU.S. Army Tank-Autatotive ComiandWarren, MI 48397-5000ATTN: AMSTA-CF (Dr. Oscar) 1
AMSTA-FTW (Ms. Carpenter) 1AMSTA-ISCA (Ms. Wrd) 1AMSTA-MTC (Mr. Jacobson) 1AMSTA-RGD (Propulsion Development Branch) 6ASQWC-TAC-DRT (Technical Library) 2SFA.E-S-TVH (Mr. Mlsotto) 3
Camnander 12Defense Technical Infornation CenterBldg 5, Cameron StationATTN: DDACAlexandria, VA 22304-9990
Manager 2Defense Logistics Studies Inbrmation ExchangeATTN: AMXMC-DFort Lee, VA 23801-6044
f'l -c.-ctorU.S. Army Materiel Systems Analysis ActivityATTM: AMSXY-MP (Mr. Cohen)Aberdeen Proving Ground, MD 21005-5071
Dist-l
