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HEADER OPTIONS DATA C <<< SIRTF THERMAL MATH MODEL >>> C Mid 80s Configuration SOLRTN = SSITER $ Steady State solution SUMMARY = ON $ Print data block summaries UID = SI HEADER CONTROL DATA SIGMA = .56700E-08 $ Stephan-Boltzmann ABSZRO = 0.000 $ Absolute temperature c MLI Blankets: effective emissivity ,area (sqcm), and thickness (cm) E_outer = .00081 , A_outer = 5.617E+05, T_outer = 8. $ Outer MLI OS to OVCS E_mid = .0019 , A_mid = 5.368E+05, T_mid = 4. $ OVCS to MVCS E_inner = .0056 , A_inner = 5.186E+05, T_inner = 3. $ MVCS to IVCS E_last = .01361 , A_last = 3.969E+05 $ IVCS to MCT A_fb = 2.077E+04 $ area of fwd baffle C_mli = 1.5E-06 $ MLI conductivity mw/cm-K HEADER NODE DATA 1, 10.000, 1.00 $ Clevis 117, 10.000, 1.00 $ Hot MIC 118, 10.000, 1.00 $ Cold MIC 220, 10.000, 1.00 $ Forward Baffle 260, 10.000, 1.00 $ Secondary Mirror 261, 10.000, 1.00 $ Chopper Motor and Housing 280, 10.000, 1.00 $ FGS 301, 10.000, 1.00 $ IVCS 401, 10.000, 1.00 $ MVCS 501, 10.000, 1.00 $ OVCS 621, 10.000, 1.00 $ Strap, outer 622, 10.000, 1.00 $ Strap, mid 623, 0.010, 1.00 $ Strap, inner -800, 1.700, 1.00 $ MCT (main cryo tank) -900, 200.000, 1.00 $ Outer Shell HEADER CONDUCTOR DATA c internal radiation -1001, 900, 501, 0.372E+02 ,-1002, 220, 261, 0.1362E+02 -1003, 220, 800, 0.179E+01 ,-1004, 220, 800, 0.588E+04 C MLI ( area(sqcm) * e ) -1005, 900, 501, A_outer * E_outer ,-1006, 501, 401, A_mid * E_mid -1007, 401, 301, A_inner * E_inner ,-1008, 301, 220, A_fb * E_last -1009, 301, 800, A_last * E_last 2001, 118, 800, 25. $ Baseplate to Cold MIC 2002, 1, 900, 25. $ OS to clevis 2003, 117, 800, 15. , 2004, 117, 800, .207 $ Hot MIC 2005, 260, 261, .15 , 2006, 261, 800, 15.0 $ Sec mirror Assy 2007, 220, 301, 10.0 $ FB support, Fiberglas 2008, 280, 501, 10.0 $ FGS sunk to OVCS 2009, 621, 501, 100., 2010, 622, 401, 100. $ Straps to VCS 2011, 623, 301, 100. $ Straps to VCS 2012, 900, 301, .235, 2013, 301, 800, .00267 $ fill line 2014, 900, 501, 2.48, 2015, 501, 401, 8.87 $ wires 2016, 401, 301, 5.53, 2017, 301, 800, .418 $ wires 2018, 900, 501, C_mli * A_outer / T_outer $ MLI conductance 2019, 501, 401, C_mli * A_mid / T_mid $ MLI conductance 2020, 401, 301, C_mli * A_inner / T_inner $ MLI conductance c Flow conductors as a funtion of heat load on node 998 (helium) c Hv(helium)=23000. FLQ 3001, -800, 261, 500, 1./23000., 800 $ FLQ 3002, -261, 117, 500, 1./23000., 800 $ FLQ 3003, -117, 220, 500, 1./23000., 800 $ FLQ 3004, -220, 301, 500, 1./23000., 800 $ FLQ 3005, -301, 401, 500, 1./23000., 800 $ FLQ 3006, -401, 501, 500, 1./23000., 800 $ c Strap conduction a function of temperature SIV 4001, 1, 621, 1, 0.123E+01 $ STRAPS L=30 cm AREA=36.8 sqcm SIV 4002, 621, 622, 1, 0.613E+01 $ STRAPS L=6.0 SIV 4003, 622, 623, 1, 0.123E+02 $ STARPS L=3.0 SIV 4004, 623, 800, 1, 0.968E+00 $ STRAPS L=38. SIV 4005, 280, 800, 2, 0.242E-01 $ FGS mounting (fiberglas tube) HEADER ARRAY DATA 500 $ Cp(helium) 0., 5200., 300.,5200., END c Thermal Conductivity of Straps 1 c T k c (K) (mw/cm-K) c ----------------------- 4.000, 0.584 5.000, 0.814 6.000, .9900 8.000, 1.240 10.000, 1.400 15.000, 1.650 30.000, 2.150 40.000, 2.480 50.000, 2.850 60.000, 3.180 80.000, 3.880 100.000, 4.540 150.000, 6.000 200.000, 7.190 300.000, 8.900, END C C THERMAL CONDUCTIVITY OF G-10CR C 2 C C T k C (K) (mW/cm-K) C ----- --------- 0.0, 0.000 4.0, 0.881 6.0, 1.080 8.0, 1.260 10.0, 1.410 15.0, 1.730 20.0, 2.010 25.0, 2.250 30.0, 2.470 35.0, 2.680 40.0, 2.870 50.0, 3.220 60.0, 3.550 70.0, 3.820 76.0, 4.000 80.0, 4.100 90.0, 4.360 100.0, 4.600 120.0, 5.050 140.0, 5.470 160.0, 5.870 180.0, 6.230 200.0, 6.580 250.0, 7.370 300.0, 8.100, END HEADER SOURCE DATA C Constant Heat Sources (mw) 117, 150.000 $ hot MIC 118, 50.000 $ cold MIC 261, 30.000 $ chopper motor 280, 50.000 $ FGS 220, 80.000 $ Aperature heating END OF DATA
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