Re: [Paparazzi-devel] Automatic Takeoff and landing

[Pascal Brisset]

Hi,

> *Pre Flight Checks* - is it possible to code something similar to the 
> preflight checks on a normal aircraft?
For example ?
> *Building a runway takeoff* - I cannot seem to set the start point of 
> the aircraft for takeoff (maybe it would be good to set a start point 
> dynamically when I push takeoff). The start point seems to be the Lat 
> and Lon in the flight plan file.
>
> I would like to be able to
>
> 1. Have a dynamic start point when I push takeoff (or other button)
You can use the  NavSetWaypointHere() macro to set the waypoint 
(example in MOB block in basic.xml)
> 2. Have the aircraft travel down the runway with slight down elevator 
> until above minimum speed.
Use the "throttle" vertical mode:

  <go vmode="throttle" throttle="0.314" from="RunwayStart" 
wp="RunwayEnd"pitch="-10"/>

where the pitch attribute should give you some down elevator
> 3. Move elevator to certain up pitch
> 4. Fly to waypoint Climb
Back to standard takeoff
> Is the above possible?
You will say it !
> How do you keep the aircraft from going off the side of the runway 
> given the GPS is not that accurate?
Try :-) How is directed your front wheel ? You will have to play with 
the course_pgain (probably different from the "air" one)
> If it is possible, I have no idea how to do any of the above, could 
> someone point me in the right direction?
>
> *Runway Landing.*
>
> Are runway landings possible with a good degree of accuracy?
Repeatable automatic landing in a 25x25m square, without barometer, is 
our (the historic team) best achievement with a Slayer 
(http://paparazzi.enac.fr/wiki/Image:DragonSlayer_0948sm.jpg)

Good luck

--Pascal

PS: Feel free to feed the wiki with your understandings of the system 
and your experiment results :-)

> Kindest regards,
>  
> Nathan Aherne
> Reddog Technology
> Web: www.reddog.com.au <http://www.reddog.com.au>
> Email: address@hidden <mailto:address@hidden>
> Mob: 0402 555 080