this is a test flight sim arrow keys to control land on the black pad to win! do do the belly flop meanuver i will tell you what is that One purpose of the belly flop maneuver is to scrub off and reduce as much velocity as possible passively. ... As a general rule, the lower the rocket's terminal velocity is, the later it has to perform its landing burn, because the engines don't need to burn off as much velocity anymore. next gen on mars launch coming soon!