How does fly-by works? How is it possible that after fly-by I have more energy than before? Where do I take it?
Great!!!!Integral said:The passing satellite picks up the ORBITAL velocity (at least a portion of it) of the body it is passing. You are correct that all energy gained from entering the gravity well of the planetary body is lost on exit. But all the time the satellite is in the gravitational influence of the planetary body it is being drug along with the orbital motion. This is the slingshot velocity.