Issue 15

102 the In cau eve L O aer Lo me loa sec He con Du rep jog 165 tem D on OV-10 rmography in addition, the se investigat nts (e.g., se e (c) Post ADING ENV uring ascent tempe odynamic loa ads analyses chanics analy ding conditio onds after lif nce, both th tributors to ring entry, t resentative e gle regions f 0°C (3000°F perature ran 3 Panel 10L dication (fro spallation ev ion was subs Ref. 1-6). (a) Post-STS-1 -STS-114 ther IRONMENT a mission, th , aerodynam ratures; duri ds act on the showed that ses were pe n. The bou t-off. The de e lift-off an the spallation he Shuttle W ntry trajector or each of t ) and occu ge is -130°C . After the m NDE) wa ent on the n equently con 03: OV-103 8 mography: OV S e Space Shu ic loads act ng entry, the Shuttle. the lift-off a rformed usin nding pressu fect driving d ascent co root caus e [ LE panels y from the In he 22 WLE rs in the ho ≤ T ≤ 90°C I. S. Raju et Shuttle land s observed o ose cap on ducted to d L. -103 8R. Figure 2 : ttle is subjec on the Shut Shuttle exp nd ascent lo g a boundin re load occu forces were c ndition and 6]. experience e ternational S panels is ind t panels 8, (±200°F), wi alii, Frattura ed ed followin n OV-103 P OV-105 was etermine wh RCC spallatio ted to four d tle; while th eriences pea ading bound g pressure lo rs at the ma alculated for descent and ntry heating pace Station icated in Fig 9, and 10. th -130°C (-2 Integrità Struttu g the return anel 8R (Fig. observed du at factors an (b) (d) Observed d n history. istinct loadi e Shuttle is k heating; a s the loading ad over an a ximum dynam the boundin landing co that depend , the peak-he . 3. Peak h For the on- 00°F) being rale, 15 (2011) -to-flight mi 2(c)), indicat ring refurbis d scenarios c Post-STS-103 uring refurbis ng environm in orbit, it i nd during d on descent ssumed defe ic pressure g pressure lo ndition were s in part on ating entry te eating reach orbit heating the cold con 35-49; DOI: 10 ssion (STS-1 ing a loss of hment (Fig. ontribute to : OV-103 10L hment: OV-1 ents [1]. Du s subjected escent and l and landing ct for the lif condition (m ad, and they dismissed the entry tr mperature al es temperatu /cooling th dition. In th .3221/IGF-ESIS.1 14), an infra coating stren 2(d)). The r these spalla . 05 nose cap. ring lift-off to extreme c anding, diffe . Thus, frac t-off and as ax-Q) abou were nearly z as being ben ajectory. Fo ong the slip- res up to ab ermal cycle, is paper, frac 5.05 37 red gth. oot- tion and old rent ture cent t 80 ero. ign r a side out the ture