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RE: [Paparazzi-devel] One question about gliding

From: mark.griffin
Subject: RE: [Paparazzi-devel] One question about gliding
Date: Tue, 7 Dec 2010 17:13:44 +0100

Hi Chris,

This is my descent routine:

      <circle wp="T3R3" pitch="-20" radius="nav_radius" throttle="0.0"
until="ground_alt+30.5 > estimator_z" vmode="throttle"/>

It cuts the throttle, sets the pitch to -20 degrees and circles until
the altitude above ground is 30.5 metres. To glide, the pitch would
obviously have to be smaller (unless you're flying a brick). Hope this

Cheers, Mark

-----Original Message-----
From: address@hidden
[mailto:address@hidden On
Behalf Of Chris
Sent: Tuesday, 7 December 2010 2:32 PM
To: address@hidden
Subject: [Paparazzi-devel] One question about gliding

I am trying to imitate Mark's approach and although i trimmed the 
airframe file for optimum
altitude gain based on the recorded data i still have a peculiar problem

when gliding.
During gliding from point A to point B and although the altitude is more

than sufficient to glide to point B (more than 2X), the throttle is 
slowly creeping up (always in simulation) until it reaches maximum
I thought that throttle should come down close to idle when gliding
but i endup gliding at 30m/s, -8 degrees pitch and throttle close to 90%
Is there any particular setting in the airframe file to correct this?
I am trying to make the simulator match the recorded data and the planes

actual behavior.

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