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Electric power harness maiden flight

Posted: Sun Jan 21, 2018 6:53 pm
by Odakyu-sen
After 18 months of planning and development, Brendan enjoys the maiden flight of his electric powered harness. The first flight was a cliff launch, to confirm the thrust and handling characteristics.
In future, he plans to make a conventional takeoff from the ground.


Re: Electric power harness maiden flight

Posted: Sun Jan 21, 2018 9:44 pm
by Toomb
Well done! Thanks for sharing. Please keep us updated. Does he have a blog or website we can check out?

Re: Electric power harness maiden flight

Posted: Sun Jan 21, 2018 9:50 pm
by Odakyu-sen
Brendan has a YouTube channel. Here is one of his videos showing stages of work on the electric harness.


Re: Electric power harness maiden flight

Posted: Mon Jan 22, 2018 8:18 am
by Toomb
Awesome! Thanks.

Re: Electric power harness maiden flight

Posted: Sun Feb 04, 2018 5:37 pm
by RidgeRider
Hi Toomb

Flying my rendition of an electric HG propulsion unit was a blast :) It gave me the ability to gain height on demand to fly over obstacles (cliff rotor in the maiden vid) and also to extend out my glide (to get to LZ in the vid). For testing I am only flying on half the battery's that the design is spec'd for, with all the battery's onboard I hope to do a flatland powered launch - like a Mozzie.

Without power the rig did not feel at all cumbersome (when flying!), although it surely had some effect on glide just through the extra weight. This is important to me, as I want to eventually use it for thermal hunting when flying inland.

The inspiration and design concept was from Reidar Berntsen's "E-Help" (he has a YouTube channel), although I took a different path with the chassis and componentry.

The build was slow as I built it as a hobby project, not letting it interfere with my normal flying and trying not to let it get in the way of all the other things needing to be done. Plus, there were some costly items I needed to buy and these needed to be carefully managed with the beloved :wink:

If you would like some specs here ya go:
.
  • Static thrust: 28kg (62lbs)
  • Weight (not including normal harness): 13kg (29lbs)
  • Prop: Falcon Propeller Beechwood 34" x 10"
  • Voltage: 54V
  • Current (at wide-open-throttle): 122A
  • Time @ WOT: ~6minutes (although I'm running on a half-battery-pack for testing, so double).
I have project documented most things via the App "Slack". This is not a public collaboration as otherwise you get too many silly comments about impending doom, etc. Happy to invite anybody into this Slack project if they are interested :)

Cheers.

Re: Electric power harness maiden flight

Posted: Mon Feb 05, 2018 7:45 am
by Toomb
Thanks. You guys are making great progress. I hope to be able to build something like that someday with off the shelf components to allow a flat land launch. Thanks for leading the way......

Re: Electric power harness maiden flight

Posted: Tue Feb 06, 2018 12:03 pm
by DMarley
Excellent project and execution!
What motor and controller are you using?
Thanks