user manual

TABLE 3.5-18
124-10 PROPELLANT LOADING UNCERTAINTIES
LM-10 APS PROPELLANT
Vent Line Volume
Tank Volume
Pressure Measurement (+-5 PSIA)
Temperature Measurement (+-1.5°F)
Measured Density
2Welght Measurement
ILoadlng Tolerance
Total Loading Uncertainty
Amendment 94
12/lO/7O
Fuel (Ib) Oxidizer (Ib)
±0.2 +-0.3
+-0.8 +1.3
±0.5 +-0.8
±1.7 +-4.3
±0.7 +-0.5
±0.5 +-0.5
±0.5 ±0.5
+-4.8 z8.2
APS Mission Uncertainties
Mixture Ratio Variation
_V, Isp , Vehicle Weight Variation
Propellant Usage Uncertainty Due To Total
Loading Uncertainty
Total Propellant Uncertainty For Mission _V
TBD
TBD
TBD
TBD
LM-10 DPS PROPELLANT
Vent Line Volume
Tank Volume
Pressure Measurement (±5 PSIA)
Temperature Measurement (1.5°F)
Measured Density
2Welght Measurement
ILoading Tolerance
Total Loading Uncertainty
±0.2 ±0.3
±3.62 ±5.96
±1.70 ±2.77
±6.49 ±15.76
±2.55 ±1.70
±0.5 +-0.5
±0.5 +-0.5
±15.6 +-27.5
DPS Mission Uncertainties
Mixture Ratio Variation
dV, Isp , Vehicle Weight Variation
Propellant Usage Uncertainty Due To Total
Loading Uncertainty
Total Propellant Uncertainty For Mission AV
TBD
13D
TBD
TBD
_M-IO RCS PROPELLANT
Loading Temperature ±0.6 +-1.8
Ullage Calculation ±0.4 +-0.6
Tank and Manifold Volume ±0.8 +-1.4
Total +-1.8 +-3.8
IThese will be known quantities after loading is accomplished.
2If weigh tank is used for off-loadlng, then weight measurement uncertainty
_s ±0.5 pounds per wei&h Clmk. If flow meter le used for off-loadlng, then
weight measurement uncertainty is +-4'OZ of amount off-loaded.
3.5-83
SNA-8-D-O27(III)REV 2