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PRO200SPEC7 and PRO200SPEC8 – Hover autopilot
Hover autopilot is often underestimated but it's a very useful autopilot to make a controlled descent on a satelite or planet without an atmosphere. Once you have full control of your descent rate, it's a piece of cake to make a nice trajectory that ends exactly over the pad. Control your speed with retro and control lateral trajectory with RCS in translation mode. There are two modes: Auto descent PRO200SPEC8 which automatically maintains a descent speed of -40 m/s maximum and lands you smoothly. Or the hover autopilot PRO200SPEC7 which maintains the vertical speed you specify. See tutorial scenario for a complete walkthrough.