user manual

TABLE4.3- 6
SERVICE MODULE RCS LOADING PARAMETERS AND CALCULATIONS - QUAD D
Fuel
Secondary Fuel
A. Loading Temperature (°F)
B. Tank Volume (in 3) @ 0.0 PSIG
BI. Liquid Line Volume (in 3)
C. Tank Stretch Factor (in3/PSl) 0.034
D. Initial Weight of Bleed Unit
Prior to Loading (ib)
E. Final Weight of Bleed Unit
After Loading (ib)
Resulting Load (ib) (Item D less
Item E)
i
G. Specification Nominal Load
at 70 ±5 ° F (Ib)
Volume of GHE-GSE Line (in 3)
Volume of S/C GHE Line (in 3)
GSE Line Pressure (PSIG)
Bladder Pressure (PSIG)
Stabilized Equilibrium
Pressure (PSIG)
Primary Liquid Close-Out
Pressure (PSIG)
Specification Ullage @ A Above
Maximum
Minimum
Ullage Volume (in3). Solve the
following equation by substituting
the values contained in the indi-
cated steps.
Ullage Volume = H (L---2---K)-J- L
(C + S)(L + K + 14.7) + S(M)- I
Primary Fuel
Loading Temperature (°F)
Tank Volume (in 3) @ 0.0 PSIG
Liquid Line Volume (in 3)
Tank Stretch Factor (in3/PSl) 0.0652
*F.
H,
I.
J.
K.
L.
M.
N.
Oo
Pe
Q.
R.
S.
Oxidizer
Secondary Oxidizer
A. Tank Volume (in 3) @ 0.0 PSIG
AI. Liquid Line Volume (in 3)
B. Tank Stretch Factor (in3/PSl)
Primary Oxidizer
C. Tank Volume (in 3) @ 0.0 PSIG
CI. Liquid Line Volume (in 3)
D. Tank Stretch Factor (in3/PSI)
0.045
0.088
PV Parameters for Combined
Primary and Secondary Oxidizer Tanks
E. Volume of GHE-GSE Line (in 3)
F. Volume of S/C GHE Line (in 3)
G. GSE Line Pressure (PSIG)
H. Bladder Pressure (PSIG)
I. Stabilized Equilibrium
Pressure (PSIG)
J. Loading Temperature (°F)
K. Oxidizer Density (ib/in3); solve
equation (4) below where T = Tempera-
ture @ J above
L. Specification Value @ Temperature J
above (ib)
Maximum
Minimum
M. PV Calculated Oxidizer Load (ib); solve
equation (5) and (6) below by sub-
stituting the values contained in the
above indicated steps where U =
Volume of tank gas (in 3) in both tanks
and He system, and F o = PV calculated
oxidizer load for both tanks
±2.3
N. Specification Nominal Value @ Tempera-
ture J above (ib)
(4) Oxidizer Density = 0.451591(10 -4 )
(11.8 - T) + 0.05475906
(5) U = E _ - (B+D)(I+H+I4.7)
(6) Fo = K(A + C + AI + C1 - U + F)
4.3-10
SNA-8-D-027 (III)REV 2
H E h L
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