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Space Propulsion - IAP/TU Wien

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

these purely mechanical relationships are valid independent of<br />

the methods used to accelerate exhaust particles<br />

I<br />

•<br />

T = m.<br />

I sp<br />

I<br />

sp<br />

=<br />

τ<br />

= ∫Tdt<br />

= I<br />

0<br />

dp<br />

dm<br />

= V<br />

e<br />

sp<br />

dE<br />

j<br />

TI<br />

P<br />

j<br />

= =<br />

dt 2<br />

Pj<br />

P<br />

sp<br />

= =<br />

T<br />

m<br />

i<br />

/ m<br />

f<br />

sp<br />

I<br />

sp<br />

2<br />

= e<br />

=<br />

m<br />

sp<br />

Isp<br />

T<br />

ΔV<br />

p<br />

•<br />

m<br />

≡ Tτ<br />

( m m )<br />

ΔV<br />

= I ln /<br />

i<br />

f<br />

[N]<br />

[N.s]<br />

[W]<br />

[m/s]<br />

[W/N], [m/s]<br />

[1]<br />

thrust<br />

total impulse<br />

jet power<br />

specific impulse<br />

specific power<br />

Tsiolkovsky equ.<br />

(rocket equ.)

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