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Re: [Paparazzi-devel] airframe config - minor adjusts - help needed


From: Balazs GATI
Subject: Re: [Paparazzi-devel] airframe config - minor adjusts - help needed
Date: Tue, 29 May 2012 08:47:44 +0200
User-agent: Mozilla/5.0 (Windows NT 5.1; rv:12.0) Gecko/20120428 Thunderbird/12.0.1

Problem 2: the reason for the the delay in power can be the improper value for AUTO_THROTTLE_IGAIN. The stall can be prevented if you set AUTO_PITCH_MAX_PITCH lower. But perhaps this problem isn't independent of the offset in pitch.

Balazs



2012.05.29. 7:13 keltezéssel, Eduardo lavratti írta:
Whel, today i make my first flight with constant airspeed (20m/s) using
airspeed_eps and constant altitude (70m) using baro_bmp on TWOGy board.

for now i have only 2 problems to finish my BIG FLYwing.

1- In AUTO1 the PFD show -7 deg in pitch axis for an aligned flight.
have a way to adjust the airframe for the pfd stay aligned when airplane
are perfect aligned in pitch axis ?
What is the parameter PITCH_NEUTRAL_DEFAULT and ROLL_NEUTRAL_DEFAULT ?

I adjusted the acc neutral for aligned pitch fly making some flights and
making the adjusts to the sensor.

2- the is a big problem. My flywing crashed 8 times due to this problem.
Some time when i change the MODE from AUTO1 to AUTO2 the throttle go to
near 0% for some seconds.
After some wait the throttle increase but some time this occurs too late
and plane stall and crash.

i not understand way the throttle are reduced too much.
somebody now this issue ?

this problem occurs is two different airplanes with 2 different ppz
autopilot (LISA_M and TWOG) and the airframe file are base on 2
different examples.

any help will be appreciated.







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--
Balazs GATI, PhD
     Department of Aircraft and Ships
     Budapest University of Technology and Economics

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