Re: [Paparazzi-devel] CESSNA 182 full auto 2

[Chris]

Hi.
In the modules directory there is the airborne antenna track module.
Use a GWS S125 1T 360 degree analog servo or a SPT50 from servocity (low torque as it uses a micro servo).
Attached is a photo with my very first version with SPT50 and a 10dbi 2.5Ghz  antenna.
For the antenna i constructed a yagi for 2.4 Ghz my self using this calculator
http://www.k7mem.com/Electronic_Notebook/antennas/yagi_vhf.html
I constructed various yagis using this calculator and after verification with expensive instruments they all were spot on!
Chris


On 09/13/2013 11:11 PM, alonso acuña wrote:

Hi. Could you point me to where I can learn more about that kind of rotating antenna?  Thanks.

On Thu, Sep 12, 2013 at 1:18 PM, Chris <address@hidden> wrote:

I was impressed also as i didn't expected a so trouble free flight for my first internal combustion project.
For ~18km at 107-120km/h it burned 200ml of fuel and the airborne rotating antenna worked brilliantly (it used the magnetometer not the gps heading) as it also reduced the airborne interference.
Having a lot of space also helped to eliminate the 9xtend modem's interference to servos and gps
Chris

On 09/12/2013 09:42 PM, Felix Ruess wrote:

Very nice! Added to the Paparazzi UAS collection 2013 on youtube.

On Tue, Sep 10, 2013 at 8:48 PM, Chris <address@hidden> wrote:

Here is a glimpse of the first full auto2 flight, sorry i couldn't upload the full video.
The autopilot used is the TWOG + drotek 10dof + paparazzi gps + airborne antenna tracker + 13dbi yagi + a common camera able to do 360 degrees pan.
The small video loss you see around the 17s mark is the antenna reaching one end (-180)
and rotating to the other side (+180).
http://www.youtube.com/watch?v=cnqa_QfMX_Q&feature=youtu.be
It was a perfect flight.
Chris

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