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[Paparazzi-devel] Reply to Constant ground speed and altitude control (R

From: Chris
Subject: [Paparazzi-devel] Reply to Constant ground speed and altitude control (Rokas Adiklis)
Date: Tue, 22 Jun 2010 13:09:46 +0300
User-agent: Mozilla/5.0 (X11; U; Linux i686; en-US; rv: Gecko/20100423 Thunderbird/3.0.4

I have implemented a similar approach as the one in the nav.c file.
What i do is set a minimum groundspeed in the airframe file or within the flight plan and then if the groundspeed falls below this value the cruising throttle is increased. When i fly downwind obviously the control loop does not restrict grounspeed so the plane can adjust the throttle as usual to maintain altitude. In this case the groundspeed loop is deactivated like it is not there at all (normal Paparazzi autopilot operation.

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