PAGE 1 .. " .-.K4~ .. HAY , 19 .0

SPACE SHUTTLE PROGRAM RESPO Sf

TO

VERIFICATION/CfRTIFICATIO COMMITTEE RECOMMENDATIO S

LANDING/DECELERATIO SYSTEM & ISCElLA EOUS CRITICAl MfCHA ISMS

SU RY INDEX

PAGE 2 jif:E" MAY.89) 19 0

LA DING/DECELERATION SYSTEM A D MISCELLA EOUS CRITICAL MECHANIS S \ .

RECOMMENDATION PROGRAM BASELINE

MECH-l FLIGHT SIMULATIO TRAINING X

MECH~2 DFRC & WHITE SA DS RUNWAY P EP X

MECH-3 MAIN GEAR . TIRE PRESSU E X

MECH-q DELAYED PITCHOVER

MECH-5A THREE-POINT ATTITUDE

MECH-5B MAl GEAR REDESIGN

MECH-5C WHEEL OVER-PRESSURIZATION VALVES

MECH-5D THERMAL FUSE PLUG .-

. y~ MECH-5E TIRE INFLATION IN STOWED POSITION •

MECH-5F MAIN GEAR WHEEL & BRAKE REDESIGN

MECH-5G AUTOMATIC BRAKING SYSTEM

X

ACCEPT STUDY REJECT

,c-urUR£

O£SII :.AI

CONSIDERATIONS

SUMMARY INDEX

PAGE 3 _~£v. MAY 213, 1980

LANDING/DECELERATION SYSTEM AND MISCELLANEOUS CRITICAL MECHANISMS - CONTINUED

PROGRAM RECOMMENDATION BASELI NE. ACCEPT STUDY REJECT

MECH-5H ELECTO-ACTUATED BRAKES

MECH-6 STAR-TRACKER DOOR CHECKOUT· X

STAR-TRACKER DOOR DRIVE MOTOR X

MECH-8 X

MECH-9

MECH-10

MECH-11

MECH-12 X

X

MECH-14 FORWARD VENT DOOR MOTORS X

PAGE 4 ,eE V. MAY ZB

J 1980

SUMMARY INDEX

LANDING/DECELERATION SYSTEM AND MISCELLANEOUS CRITICAL MECHANISMS - CONTINUED

RECOMMENDAII ON

MECH-15 ORBITER/ET UMBILICAL CLOSEOUT DOOR

PROGRAM BASELINE ACCEPT

MEC HANI SM {/?/tJAiITO/z T!.Ilt/Ii(EL TEST) X ~ X ;1[£11 16 aRB ITER lET H:~B I LI CAL EL8SE8~T B88R

P8SHI8U

MECH-17 ORBITER/ET UMBILICAL CLOSEOUT DOOR SWITCHES

MECH-18 EVA CAPABILITY

MECH-19 PAYLOAD BAY DOOR SWITCHES

X

STUDY REJECT

SUMMARY I~DEX BACKUP COMMENTS . LANDING/DECELERATION SYSTEM AND MISCELLANEOUS CRITICAL MECHANISMS

\

MECH-SA THROUGH MECH-SH: FUTURE DESIGN RECOMMENDATIONS-ALL UNDERGOING STUDY.

MECH-6 TH ROUGH MECH-14: . NOT CONSIDERED BY COMMITTEE AS RECOMMENDATIONS BUT AS COMMENTS ON SYSTEM STATUS. EACH MECHANISM CONSIDERED CERTIFIED FOR STS-1 FOLLOWING PLANNED FUNCTIONAL CHECKOUT

MECH-15: - . .. .

BASIC AEDC TESTS CONDUCTED TO VERIFY TPS DESIGN. COMMITTEE RECOMMENDATION TO MONITOR TESTS TO ASSESS IMPACT ON CERTIFICATION OF DOOR MECHANISMS ACCEPTED.

MECH-16: RECOMMENDATION BASED ON ASSUMPTION THAT VEHICLE COULD RTLS FOLLOWING ABORT DUE TO

CLOSEOUT DOOR PROBLEM. SINCE THIS ASSUMPTION IS NOT VALID" RECOMMENDATION HAS BEEN WITHDRAWN. .

MECH-1Z AND MECH-19: ROCKWELL STUDYING THE IMPACT OF IMPLEMENTING ADDITIONAL SWITCHES TO SUPPORT THESE

RECOMMENDATIONS .