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Re: [Paparazzi-devel] Auto throttle values in airframe configuration fil

From: Gautier Hattenberger
Subject: Re: [Paparazzi-devel] Auto throttle values in airframe configuration file.
Date: Sun, 27 Jun 2010 23:00:29 +0200
User-agent: Mozilla/5.0 (X11; U; Linux i686; en-US; rv: Gecko/20100423 Thunderbird/3.0.4


Le 27/06/2010 20:28, Helge Walle a écrit :
Referring to the following lines:
   <define name="AUTO_THROTTLE_NOMINAL_CRUISE_THROTTLE" value="0.65" unit="%"/>
   <define name="AUTO_THROTTLE_MIN_CRUISE_THROTTLE" value=".4" unit="%"/>
   <define name="AUTO_THROTTLE_MAX_CRUISE_THROTTLE" value="1" unit="%"/>
Does value="0.65" mean 65% ?
I wonder if unit="%" is of any importance to the meaning of the value.
Also, are the _NOMINAL_, _MIN_ and _MAX_ values important to fine tuning of the aircraft?
The "nominal" value, is mainly the default value for the cruise throttle. It is also used to compute a trim when the throttle is far from its nominal.
The "min" and "max" are of course the maximum value for the cruise throttle, which is different from the final throttle value :
throttle = cruise + pre-command + pid control on vertical speed error

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