Space Propulsion - IAP/TU Wien
Space Propulsion - IAP/TU Wien
Space Propulsion - IAP/TU Wien
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<strong>Space</strong> <strong>Propulsion</strong><br />
Check<br />
for tankage factor φ 0, we have rockets consisting of payload<br />
and fuel only and single- and „multistage“ rockets with same<br />
payload and fuel masses must have the same ΔV<br />
R −1<br />
ρ = → R −1<br />
1−<br />
φ<br />
( R −1)<br />
( 1+<br />
φ ) ρ → −1<br />
ψ = R<br />
ΔV<br />
sin gle<br />
=<br />
I<br />
sp<br />
⎡ 1+<br />
φ<br />
.ln⎢<br />
⎣φ<br />
+<br />
( 1+<br />
ψ )<br />
⎤<br />
⎡ 1<br />
⎢<br />
⎣ R<br />
n ⎥ → I<br />
sp<br />
ln = nI<br />
n sp<br />
ln( R)<br />
− −<br />
⎦<br />
⎤<br />
⎥<br />
⎦<br />
=<br />
ΔV<br />
multi