Cheat sheet

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Revision as of 15:07, 28 June 2013 by Dgelessus (talk | contribs) (* major change, made it shorter and more cheat-sheet-like. - examples. + various stuff.)
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Kerbal Space Program rocket scientist's cheat sheet: Delta-v maps, equations and more for your reference so you can get from here to there and back again.

Mathematics

Delta-v (Δv)

Basic calculation

Basic calculation of a rocket's Δv. Use the atmospheric and vacuum thrust values for atmospheric and vacuum Δv, respectively.

Transitional (true) Δv

Body Δvout
Kerbin 1000 m/s2
other bodies' data missing

Calculation of a rocket's Δv, taking an atmosphere into account. Δvout is the amount of Δv required to leave a body's atmosphere.

Maps

Various fan-made maps showing the Δv required to travel to a certain body.

Total Δv values

Δv change values

Δv nomogram

Thrust to weight ratio (TWR)

This is Newton's Second Law. If the ratio is less than 1 the craft will not lift off the ground.

Combined specific impulse (Isp)

If the Isp is the same for all engines in a stage, then the Isp is equal to a single engine. If the Isp is different for engines in a single stage, then use the following equation:

See also

Links to collections of reference material.