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Space Propulsion - IAP/TU Wien

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<strong>Space</strong> <strong>Propulsion</strong><br />

The staging principle<br />

when the rocket motors of all stages have the same specific impulse I sp ,<br />

the velocity difference of the final stage with respect to the initial velocity is<br />

ΔV = I<br />

sp<br />

ln( R . R2...<br />

R<br />

1 n<br />

)<br />

when the mass ratios of all stages are identical (R j = R)<br />

ΔV<br />

=<br />

I<br />

sp<br />

n<br />

ln( R ) =<br />

n.<br />

I<br />

sp<br />

. ln R

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