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Re: [Paparazzi-devel] Tuning Suggestions?

From: Todd Sandercock
Subject: Re: [Paparazzi-devel] Tuning Suggestions?
Date: Tue, 20 Jan 2009 06:49:38 -0800 (PST)

when i was setting up my twinjet the elevator loop had a negative sign in it somewhere in the aircraft file so even though it did the right thing while on rc it actually did the opposite of what it was meant to during auto. ie when i was testing it on the ground if i pointed the nose down the elevator would compensate by going down which would obviously cause a problem while flying. I noticed this before flying tho so everything worked just fine on my first flight.


From: Cédric Marzer <address@hidden>
To: address@hidden; address@hidden
Sent: Wednesday, 21 January, 2009 1:00:38 AM
Subject: RE: [Paparazzi-devel] Tuning Suggestions?

Hum I also have a funjet and it worked perfectly well from the beginning with the values given in the exemple file (I could turn on auto2 in the second attempt !). You certainly have inverted either the servos or the IR sensors. You should turn on auto1 mode on the ground and see if the response is proportional and in the right direction. You should also check the artificial horizon on the ground station and check if it behaves as it should (not only in the right direction but also with the right angle). I suspect that both the left&right and the z-sensor might be inverted. You also want to think twice if the reading of the artificial horizon is really correct (the horizon should lean to the left if the plane leans to the right).

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