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Re: [Paparazzi-devel] Planes flies an eight-figure in AUTO2

From: Joseph Metz
Subject: Re: [Paparazzi-devel] Planes flies an eight-figure in AUTO2
Date: Wed, 7 Apr 2010 21:42:41 +0200

Hey Guys,
everything works now fine :)
I looked because of the hint of Adrian Lauf in the flightplan file and there had been the kill_throttle in the Takeoff and Hoding Point blocks as a "1", donĀ“t know why (used the file of a friend).
Now i set the values to zero and it works.
Now i will do the tuning of the airframe file.
Thank you so much,
----- Original Message -----
Sent: Wednesday, April 07, 2010 7:01 AM
Subject: Re: [Paparazzi-devel] Planes flies an eight-figure in AUTO2

Glad to hear that the course is working! There are several reasons why the motor won't start. For me, it was because I hadn't issued the "launch" command. I was working without the MaxStream modems, so without the launch command, it never started. I had to override this in my flight plan by manually disabling throttle kill with this line:

<set value="0" var="kill_throttle"/>

Probably not the safest thing to do, but if you're careful, it works great. I have a "wait for GPS loop prior to that, which prevents motor start prior to a GPS fix. Lastly, others have reported that issues with modems, particularly in their serial configuration, have led to no throttle input. Be sure to search the archives, if disabling kill_throttle doesn't solve it, you will find the answer there. Best of luck!

On Tue, Apr 6, 2010 at 4:42 PM, Joseph Metz <address@hidden> wrote:
Hey Guys,

thanks for your answers. Did some more test flights today and set up the
airframe like here:

Result: Auto2 works relatively fine and after some changing the of
Course_pgain the plane flew circles around the Home position (first test).
But the engine never runs in Auto2.
Why did the engine not start in Auto2 flight when the navigation routines
works fine?
I also think that there could be also a tuning problem with the IR sensors,
i had to change the LATERAL, LONGITUDAL and VERTICAL_Correction values after
calibration till the plane flies well in AUTO1.
Here are all needed files:

Thank you so far,

----- Original Message ----- From: "Pascal Brisset" <address@hidden>
To: <address@hidden>
Sent: Tuesday, April 06, 2010 9:00 AM
Subject: Re: [Paparazzi-devel] Planes flies an eight-figure in AUTO2


If you don't solve your problem, you can send me a log file. Maybe I could help


Joseph Metz wrote:

after buying an TwinstarII with TWOG and setting up the GCS (thanks to the guys at the Akaflieg Bremen) i read the manual and website several times carefully and did many testflights today.
The plane flies now perfect in AUTO1 mode but when i switch to AUTO2 it always flies eight-figures (Throttle off, elevator upwards with the value of PITCH_MAX_SETPOINT).
I changed many variables and diferent flightplans but nothing happened.
Here is a short movie of the failure: (switched on AUTO2 after 5 seconds).

I will do some more test flights and hope that someone can give me a hint which variable i have to change in the airframe-file.


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