Supersonic Wind and Supersonic Wind and Imaging Flow TunnelImaging Flow Tunnel

SWIFTSWIFT

David McNeillDavid McNeillCharles MurphyCharles MurphyMatthew OsbornMatthew OsbornDavid SpringerDavid Springer

Kendria AltKendria AltJoshua ClementJoshua Clement

Shannon FortenberryShannon FortenberryKatelynn GreerKatelynn Greer

Interim AssignmentInterim Assignment

ContentsContents

Overview of ObjectivesOverview of ObjectivesOverview of RequirementsOverview of Requirements Unchanged RequirementsUnchanged Requirements Updated RequirementsUpdated Requirements Requests for ActionRequests for Action

System DesignSystem DesignPrototyping ResultsPrototyping Results Visualization PrototypeVisualization Prototype Tunnel PrototypeTunnel Prototype

Overview of ObjectivesOverview of Objectives

Supersonic Wind Tunnel and Flow Supersonic Wind Tunnel and Flow Visualization SystemVisualization System

Operable by Undergraduate Engineering Operable by Undergraduate Engineering StudentsStudents

Mach 1.5 – 3 in 0.5 IncrementsMach 1.5 – 3 in 0.5 Increments

Accuracy of Mach ±0.05Accuracy of Mach ±0.05

Customer: Dr. Brian ArgrowCustomer: Dr. Brian Argrow

Unchanged RequirementsUnchanged Requirements

SpeedsSpeeds Mach 1.5 - 3.0Mach 1.5 - 3.0 ±0.05±0.05

Steady State Run TimeSteady State Run Time 5 sec5 sec

Lab SessionLab Session 1 run in 30 min1 run in 30 min Operable in temperatures of Operable in temperatures of 2020oo - 80 - 80oo F F

VisualizationVisualization Used for Mach verificationUsed for Mach verification Must see aerodynamic Must see aerodynamic phenomena at front and back phenomena at front and back of test objectof test object

Test SectionTest Section Area ≥ 1” x 0.25”Area ≥ 1” x 0.25” Test 3 objects at all speedsTest 3 objects at all speeds

Updated RequirementsUpdated Requirements

Old RequirementOld Requirement New RequirementNew Requirement ReasonReason

Lab SessionLab Session12 Runs without changing 12 Runs without changing tankstanks

6 Runs without changing 6 Runs without changing tankstanks

Too many tanks to Too many tanks to manifoldmanifold

Volume < 30” x 42” x 36”Volume < 30” x 42” x 36”

Weight < 100 lbs/cart topWeight < 100 lbs/cart top

2 cart tops available2 cart tops available

Modified ITLL lab aartModified ITLL lab aart

Movable by Trudy SchwartzMovable by Trudy Schwartz

Accommodation of Accommodation of settling tank and optical settling tank and optical BenchBench

OperationOperationComputer controlled start Computer controlled start and stopand stop Manual valve start and stopManual valve start and stop Cost of electric and Cost of electric and

pneumatic valvespneumatic valves

Requests for ActionRequests for Action

Request: Incorporate a safety regime that Request: Incorporate a safety regime that includes hiring a licensed, insured, PE to includes hiring a licensed, insured, PE to assist with settling tank design.assist with settling tank design. Requestor: Matt RhodeRequestor: Matt Rhode

Resolution: Hired Charles Torres P.E. and Resolution: Hired Charles Torres P.E. and Jon Simmons P.E. of Mayo Industries Inc..Jon Simmons P.E. of Mayo Industries Inc..

System DesignSystem DesignEach bullet will be discussed individually in CDREach bullet will be discussed individually in CDR

Tunnel Sub-SystemTunnel Sub-System To Settling Tank To Settling Tank

ElementsElementsLinkagesLinkagesValveValveRegulatorRegulatorManifoldManifold

Settling TankSettling Tank From Settling Tank From Settling Tank

ElementsElementsLinkagesLinkagesValveValveNozzle / Piping InterfaceNozzle / Piping InterfaceNozzle and Test SectionNozzle and Test Section

Nozzle DesignNozzle Design

Visualization Sub-SystemVisualization Sub-System Light SourceLight Source Light Path ElementsLight Path Elements

CondensorCondensorLenseLenseMirrorMirrorKnife EdgeKnife EdgeCapture DeviceCapture DeviceComputer InterfaceComputer Interface

Structural ElementsStructural ElementsMountsMountsEncasingEncasing

System IntegrationSystem Integration Cart ModificationsCart Modifications

ReinforcementReinforcementCastersCasters

Sound SuppressionSound Suppression

System DesignSystem Design

*To be replaced with a solid model

4 Commercial

Tanks

Settling Tank

Nozzle

Test Section

Light Source

Lens

ComputerSensorsCapture Device

Manual Valve

Manual Valve

Lens

Knife Edge / Filter

Manifold

Regulator

Iris

•Assumptions•Adiabatic, Polytropic,

Expansion

•Commercial Tank Specs

•8.5” diameter•50” height•2000 psi

Settling Tank OptimizationSettling Tank Optimization

2211 VPVP

•Conclusions•Settling tank: 4 ft3 at 450 psi for Mach 2 •8 tanks required for 12 runs at Mach 2•Pressure increases to 1000 psi (still 4 ft3) for Mach 3

Contours: Number of Tanks for 12 runs at Mach 2

Considered dividing 4 Considered dividing 4 ftft33, equally, among as , equally, among as many as 7 smaller many as 7 smaller volume tanksvolume tanksAssumptionsAssumptions

Vol: 4ftVol: 4ft33

Hemispherical end Hemispherical end capscaps

ASME Code thicknessASME Code thickness Carbon Steel of Carbon Steel of

nominal propertiesnominal properties

Settling Tank OptimizationSettling Tank Optimization

ConclusionsConclusions Small weight savings from increasing number of tanksSmall weight savings from increasing number of tanks Increased complexity negates savingsIncreased complexity negates savings 1 Tank1 Tank

Inside Diameter: 19 inInside Diameter: 19 inLength: 34 inLength: 34 in

Electrical InterconnectsElectrical InterconnectsMinimal, and may be assimilated in other slides for CDRMinimal, and may be assimilated in other slides for CDR

Start

Folder Name and Path

Wait Time between

images (t ms)

Image Name (i)

Signal WebCam to Take Image (i)

Save Image (i)

t ms Wait

(i)

Stop

ComputerSettling Tank

Sensors

Capture Device

Computer Program Block DiagramComputer Program Block Diagram

PowerSteady State

Capture Device

Visualization PrototypeVisualization Prototype

Visualization PrototypeVisualization PrototypeSetupSetup

Setup in Electrical Engineering optical labSetup in Electrical Engineering optical labPartsParts

Light SourceLight Source IrisIris 2 Achromatic Lenses2 Achromatic Lenses 45 degree mirror45 degree mirror Razor blade knife edge and color filterRazor blade knife edge and color filter 3 camera selections3 camera selections

VisualsVisuals Wedge CouponWedge Coupon CandleCandle Cold SprayCold Spray

Visualization PrototypeVisualization PrototypeResultsResults

Sony vx2000

720 x 486

Continuous Zoom, Focus, Iris

Sony Cybershot

2738 x 1825

Stepped Focus

Continuous Zoom

HP WebCam

480 x 640

Manual Focus

Visualization PrototypeVisualization PrototypeConclusionsConclusions

Lens array (zoom, focus iris) is needed to properly focus Lens array (zoom, focus iris) is needed to properly focus and utilize the full frame.and utilize the full frame.640 x 480 resolution is the minimum to sufficiently 640 x 480 resolution is the minimum to sufficiently measure the angle.measure the angle.Longer focal length for the secondary is desired.Longer focal length for the secondary is desired.

L shape (with mirror) to compensate for longer focal length.L shape (with mirror) to compensate for longer focal length.

Very dim light source needed to avoid overpowering the Very dim light source needed to avoid overpowering the density gradient.density gradient.Color filter needed to be very dark.Color filter needed to be very dark.Knife edge work best when cutting of 2/3 of focal point.Knife edge work best when cutting of 2/3 of focal point.High knife edge accuracies needed.High knife edge accuracies needed.

Tunnel PrototypeTunnel Prototype

Manufacture a sealed test section and the Manufacture a sealed test section and the adapter to the system’s NPT pipe.adapter to the system’s NPT pipe. Learn the intricacies of our manufacturing Learn the intricacies of our manufacturing

method, including required man hours.method, including required man hours. Ensure our design is properly thought out and Ensure our design is properly thought out and

easily used by undergraduate students.easily used by undergraduate students.

Hydrostatically pressure test.Hydrostatically pressure test. To verify safe design up to a SF of 1.5.To verify safe design up to a SF of 1.5. Will be performed after CDR.Will be performed after CDR.

Tunnel PrototypeTunnel Prototype

The two pieces are held together with 4-1/2” bolts using the two square flanges.

The left piece is an adapter that converts 1” NPT pipe to the 3” diameter necessary for the test section.

The right piece is the test section which is created using plexiglass and steel.

The end of the test section is sealed for hydrostatic testing of our design before the throat (where the pressure is the greatest).