An analysis of flight performance of the Apollo 15 cryogenic oxygen tanks was conducted with the variable grid stratification math model developed earlier in the program. Flight conditions investigated were the CMP-EVA and one passive thermal control period which exhibited heater temperature characteristics not previously observed. Heater temperatures for these periods were simulated with the math model using flight acceleration data. Simulation results (heater temperature and tank pressure) compared favor ably with the Apollo 15 flight data, and it was concluded that tank per formance was nominal. Math model modifications were also made to improve the simulation accuracy. The modifications included the addition of the effects of the tank wall thermal mass and an improved system flow distri bution model. The modifications improved the accuracy of simulated pressure response based on comparisons with flight data. (Author)
APOLLO Oxygen Tank Stratification Analysis, Volume 2
1972
36 pages
Report
No indication
English
Apollo oxygen tank stratification analysis, volume 2
NTRS | 1972
|Apollo oxygen tank stratification analysis, volume 1
NTRS | 1971
|Modified Apollo cryogenic oxygen tank design
NTRS | 1971
|