[Top][All Lists]

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

Re: [Paparazzi-devel] Lisa/M terminated standby circling

From: Balázs GÁTI
Subject: Re: [Paparazzi-devel] Lisa/M terminated standby circling
Date: Fri, 29 May 2015 16:11:27 +0200
User-agent: Roundcube Webmail/0.7.2


Paparazzi version: v5.4.0_stable

The two log files can be downloaded: Port 21
user: address@hidden
p: NW7100log

Time of interest
13_03_52: t= 315s
13_47_23: t= 320s


2015-05-29 15:43 időpontban Gautier Hattenberger ezt írta:
Can you post the log files somewhere ? And give exact paparzzi
version (./paparazzi_version)


Le 29/05/2015 15:22, Balázs GÁTI a écrit :

I just experienced an interesting behavior of a Lisa/M v2 (Transition Robotics) with Paparazzi v5.4.0.

I had finished tuning my fixed wing in AUTO1 and switched to AUTO2. The plane started to intercept altitude and to align himself to the Standby circle. After a half (more or less) stabilized circle she terminated the circle and started to roll to the opposite direction. I switched back to AUTO1 and landed. Post flight analysis of log showed no anomaly. No warning, no lost RC or GPS, no GPWS warning, no change in PPRZMode, motor running.

I increased the height of waypoints and started a new flight. The result was the same. After a half circle in Standby mode, she started an opposite spiral. I left her to do it and experienced a path similar to one and a half spiral in strong in wind by constant roll. Post flight analysis showed a rapid change in Desired.Roll, even the carrot and the green circle of the Standby mode still behaved as I expected.

The rapid change in Desired.Roll happened more or less in the same time as Attitude.Psi changed sign. This is only expectation, because this sign error would ruin all Paparazzi flight in the world. Even my simulations didn't predict this behavior. Unfortunately the telemetry messages are not too dense to confirm this expectation. Do you have any advice what should I do to identify the reasons? (NEO7P works already fine.)


Paparazzi-devel mailing list

Paparazzi-devel mailing list

Balazs GATI, PhD
associate professor
Department of Aeronautics, Naval Architecture and Railway
Budapest University of Technology and Economics

Address:   Budapest
Stoczek u 6. J. ép. 423
Tel:       +(36)-1-463-1960 [1]
Fax:       +(36)-1-463-3080 [2]
Homepage: [3]

reply via email to

[Prev in Thread] Current Thread [Next in Thread]