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 />
plane change<br />
maneuver<br />
ΔV =<br />
2<br />
V i<br />
α<br />
sin<br />
2<br />
without velocity change<br />
Plane changes are expensive on a propellant basis.<br />
A 10-deg plane change in low Earth orbit would.require a velocity change of about 1.4 km/s.<br />
For a 500 kg spacecraft, this plane change would require 292 kg of propellant, if one assumes an I sp of 3100 m/s<br />
The equation shows that it is important to change planes through the<br />
smallest possible angle and at the lowest possible velocity.<br />
The lowest possible velocity occurs at the longest radius, that is, at apoapsis.
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