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  • can you imagine flying an x8 past  them no flight controller hehe

  • You might need two and use the speed difference between them to estimate it.  Mind you I could just take the Penquin out this week and move the battery back a bit and see how it goes.  I also have a wing that is eventually getting an APM so it could be a good test.

  • I think if you have an accurate airspeed signal you should be able to infer angle of attack from that and the acceleration vector
  • And if this is the same Steve Morris then he at least has done a fair bit since

    Flying things and other stuff I do for fun.
  • Yep - they had an angle of attack sensor as well as this would be pretty critical.  An accelerometer or magnetometer can only give you a pitch angle not one referenced to the on-coming airstream.

  • It would be fun to explore this Stephen, but I think there are two issues that might arise.  Firstly the extra servo work might cost you flight time in mAh rather than L/D and secondly, (I think) you'd need a pretty reliable airspeed sensor to add in your stabilizing function which needs to operate all the time, not just in FBW and Auto modes.

    Actually, I wonder if just by having an open-loop airspeed-vs-pitch trim function whether this would be enough to add synthetic stability without needing any high-speed feedback loops running.  After all, this is all static margin is going you, isn't it?

  • Makes you wonder how unstable our UAVs could be and still fly.  Relaxed stability gives more efficient flight sometimes and a greater maneuver envelope potentially.

    I have a couple of times been guilty of launching a plane in stabilise or FBWA mode that has been completely out of trim and flown around easily and then switched to manual and have it nearly crash before I can cut the autopilot in again.  It is amazing (when you are dumb enough to do it :-)) what the APM will compensate for.

  • Literally just read a paper from Ilan Kroo the other day (tailless aircraft paper). Fantastic resource for people working on flying wings.

  • Hmm! APM mark .0001 Alpha

    Great video

  • I love it! Great video.
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