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NASA Technical Reports Server (NTRS) 19990018937: 1-D Transient Thermal Modeling of an Ablative Material (MCC-1) Exposed to a Simulated Convective Titan 4 Launch Environment PDF

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Preview NASA Technical Reports Server (NTRS) 19990018937: 1-D Transient Thermal Modeling of an Ablative Material (MCC-1) Exposed to a Simulated Convective Titan 4 Launch Environment

NASAJCR-/_;_,_- 208101 // _ - _--//_ ,!/1 I==,l | .i a. |P, a. Ill I IlI <_ I ¢_ (1) "_ mm m Z; r- G 0m "1 m mm E L.. O Em m m (" _'J • • • |mm _-- GO dddddo • _ _" ,-- ,_. •_ old o,o o d GO F- v- _- v- v- 0 0 v- _- _- v- CXl CXl Li. C_ CC) CO CC_ CO CO CO rn i i i i_ i i i i i i i i • ° . • I| ........ .... i ........ 0 ................ 0 .... 0 ............ • ° ° ........ CO ........... 0,1 ........... C ......... _'g- :::::::_ ........ m ...... ° (g ........ .._-! -! L 0 0 0 I- a im D1 -'! a _ Ab u tq _ a. im- IO 0 o 200 / JJ 190 // // 180 _TSub (t)-Calculated // _TSub (t)-Measured 170 160 150 140 / 130 / 120 110 IO0 9O 8O 70 0 10 20 30 40 50 60 70 80 90 100 110 120 Time h'omStart of Transient -sec Comparison of "rsub (t) Measured and Predicted Values with Imposed Tsu_ (t) Boundary Conditions ( q"cw = 4.6 Btu/s/ft 2,AI thickness = 0.125 in., MCC-1 thickness =0.158 in.) O Pwalt& Whitney P&W 5_ PropulslJn ^ I.I_i_¢,dl=ch_=lDll_¢l ;,_rnlt,._l/.

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