Foam Board UAV | On-board footage

by Red20RC | February 3, 2014 | (8) Posted in Projects

This project has been a very interesting first foray into UAV design. I still need to get some ground-to-air footage of it flying but at least I got to test the nose mounted camera…

Foam Board UAV – The on-board footage

I think the general theme recently has been the ongoing windy weather so I won’t go into it again!

I had made a few modifications to the foam board UAV – adding some down-thrust to the motor and also moving the battery into the mid fuselage so I could remove a lot of nose weight. So, with a quick check of the controls I started recording and threw the model… straight into the ground!

Fortunately the damage was very minimal and I picked it up and chucked it again. Being a pusher motor the single hand-launch is a bit of a trial but in the end the takeoff was a lot smoother than some commercial UAV launches I’ve seen.

Flight observations

Obviously there is a little “jello” on the footage but I am putting this down to the fact that the GoPro mount had come loose slightly during the initial failed launch. Only another flight will confirm this.

I have noticed that the model “crabs” a lot in the wind. I think this is because of two things:

  1. There is a very short moment arm from wing to tail. This reduces the stabilising effect of the vertical component of the fins.
  2. The angle of the V-tail is actually quite shallow so the model may be lacking a little vertical tail area.

The only way to test this would be to replace the tail with a more acutely angled V-tail. This UAV might also benefit with a little bit of rudder/aileron mixing to coordinate the turns more.

Of course, flying it in something less than a gale might prove different results! On the subject of high-wind performance I was really pleased to see how stable the footage is.

Where to next?

The Hobbyking APM2.5 clone is now ready to go with full telemetry added. I have it working on both my Sony Vaio Ultrabook and my Google Nexus 7 tablet (mission planner and droid planner respectively).

Now we have achieved a solid flight performance I will begin retrofitting the autopilot ready for the first fully autonomous flight.

Watch this space!

COMMENTS

JasonEricAnderson on February 3, 2014
Glad to see your design flying! Great job.
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petedotnl on February 3, 2014
very nice! great flying spot you have.

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TehMaxwell on February 3, 2014
This UAV is awesome, I am very tempted to build it but have other things in the works at the moment! So nice to see a scale FPV ship which flies great as well!
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spencer on February 4, 2014
Love this design, just not sure if it will draw the right kind of attention... ;)
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Red20RC on February 4, 2014
You know, I'd never thought about it like that!
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rcflyer729 on February 6, 2014
Do you have plans Nice build
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Red20RC on February 6, 2014
Thanks! I will be releasing plans for this one soon. I just have to find the time to draw them up properly (as I think I might have deleted the originals!)
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Red20RC on February 17, 2014
Just to let you know, I have just published my drawings for this one over at http://red20rc.org - enjoy!
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rcflyer729 on February 17, 2014
all right after I finish the viggen I will build it
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rcflyer729 on February 17, 2014
the plans don't look right some of the lines are faded and can't make them out also will u have tilled plans
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Red20RC on February 17, 2014
Argh! Leave it with me and I'll also do some tiled versions.
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Red20RC on February 18, 2014
Thanks for spotting the fault in these PDFs!
Photoshop had done something weird to them and faded them out. I've just republished and they should be much better now. :-)
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rcflyer729 on February 18, 2014
thanks a lot!!
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Foam Board UAV | On-board footage