Development of a Mass Estimating Relationship Database for ...
Development of a Mass Estimating Relationship Database for ...
Development of a Mass Estimating Relationship Database for ...
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3.0 Body<br />
Reference: 2<br />
Derived <strong>for</strong>: Airbreathing horizontal take<strong>of</strong>f vehicle.<br />
Options: Material technology.<br />
M = K<br />
no sec one<br />
nc<br />
S<br />
nose<br />
Space Shuttle<br />
Comparison<br />
-42%<br />
M =<br />
N<br />
0.5<br />
crew _ cabin<br />
1455 crew<br />
M 15M<br />
pl _ bay<br />
= K<br />
pl<br />
S<br />
pl<br />
+ K<br />
pldoors<br />
S<br />
pldoors<br />
+ 0.<br />
pl<br />
M<br />
fuel _ tan k<br />
K<br />
f<br />
V<br />
f<br />
+<br />
= K S includes insulation<br />
f _ ins<br />
f<br />
M<br />
ox _ tan k<br />
K<br />
oxVox<br />
+<br />
= K S includes insulation<br />
ox _ ins<br />
ox<br />
M = K S + K<br />
aft _ body<br />
tc<br />
tc<br />
base<br />
S<br />
base<br />
M = K<br />
2 +<br />
cowl<br />
ns _ cowl<br />
S<br />
ns _ cowl<br />
+ K<br />
inlet<br />
Sinlet<br />
K<br />
struts<br />
Linlet<br />
H<br />
inlet<br />
N<br />
struts<br />
airbreather only<br />
K nc<br />
K pl<br />
= 2.21 – Ti3Al Beta 21S<br />
= 2.21 – Ti3Al Beta 21S<br />
K pldoors = 3.5 – 20% less than STS honeycomb doors (incl. fittings & mechanisms)<br />
K f = 0.255 – Hydrogen, wound integral Gr/PEEK<br />
K f_ins = 0.26 – Based on rohacell insulation<br />
K ox = 0.33 – LOX, aluminum lithium, non-integral<br />
K ox_ins = 0.20 – Based on rohacell insulation<br />
K tc = 2.21 – Ti3Al Beta 21S<br />
= 1.99 – Secondary structure (10% lower than baseline?)<br />
K base<br />
Georgia Institute <strong>of</strong> Technology 3-7
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