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From: | Christophe De Wagter |
Subject: | Re: [Paparazzi-devel] Catapult launch. |
Date: | Fri, 4 May 2012 09:39:43 +0200 |
Delays are in module loop counts.
I mean: in fixedwing the modules run at 60Hz then 30 is half a second.
In simulator click launch to simulate a high acceleration.
Catapult Procedure:
1) Kill Motor and Wait for Acceleration, do attitude control zero roll and pitch up
2) At least 5 counts (5/60second) high acceleration (should avoid vibrations)
3) Start motor with a delay,
4) Detect current GPS heading.
5) Continue climbing in GPS heading direction.
You could try a bungee cable too. Google "slingshot UAV", there's some people doing this for launching bigger planes. Hand launching seems a lot less risky though since you have better control.-- CraigOn Thu, May 3, 2012 at 6:27 PM, Hyon Lim <address@hidden> wrote:Hi.
Beside setting of paparazzi for launching, I have short question.
I'm also interested in catapult launch. However, I don't know where can I
get catapult or how to make it easily.
Can you give some info about catapult? (especially, make or purchase)
-----Original Message-----
From: paparazzi-devel-bounces+limhyon=address@hidden
[mailto:paparazzi-devel-bounces+limhyon=address@hidden] On Behalf Of
Romney, Jefferson S
Sent: Friday, May 04, 2012 6:42 AM
To: address@hidden
Subject: Re: [Paparazzi-devel] Catapult launch.
awesome thanks! what is the units on those? what are the units for the
values? It looks to me like INITIAL_THROTTLE is on a 0-1 scale,
INITIAL_PITCH is in radians, and ACCELERATION_THRESHOLD is in Gs. is this
correct? Also, what are the units for the MOTOR_DELAY and HEADING DELAY?
________________________________________
From: paparazzi-devel-bounces+romneyj=address@hidden
[paparazzi-devel-bounces+romneyj=address@hidden] on behalf of
Christophe De Wagter [address@hidden]
Sent: Thursday, May 03, 2012 2:40 PM
To: address@hidden
Subject: Re: [Paparazzi-devel] Catapult launch.
Example
https://github.com/tudelft/paparazzi/blob/master4/conf/airframes/TUDelft/Men
tor.xml
https://github.com/tudelft/paparazzi/blob/master4/conf/flight_plans/TUDelft/
versatileCatapultPhotogrammetry.xml
On May 3, 2012 2:46 PM, "Romney, Jefferson S"
<address@hidden<mailto:address@hidden>> wrote:
What do I need to put in my airframe file to do a catapult launch?
I have :
<modules>
<load name="nav_catapult.xml">
</load>
</modules>
what do I need to define to make it work?
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