Fin-less Delta Wing Experiment

by ProjectFlightDesign | July 8, 2013 | (7) Posted in Just Fun

Quick experiment with my Pusher Delta Wing design - how much fin can I remove before the plane become unstable?

BUILD VIDEO: https://www.youtube.com/watch?v=lpjzNjn7ynw

PDF's: https://sites.google.com/site/projectflightd/

Wing span: 30 inches
Root chord: 11 inches
Tip chord (including 2 inches of elevon): 9 inches
Sweep: 11 inches

Motor: 1300 kV blue wonder (and 1500 kV)
Prop: 8x4 (1500 kV has a 7x3.5)
ESC: 18A
Receiver: Orange Rx
Battery: 1300 mAh 11.1V 3S lipo
Servos: T-Pro 9 gram

COMMENTS

eagle4 on July 8, 2013
I saw a video once on a guy who flew his finless flying wing, what he did to get back the yaw stability was to cut off a bit of the leading edge at the wingtips. imagine if you started from about 1.5 inches in from the tip on the leading edge and drew a line to the tip of the trailing edge. aparently this introduced a bit of drag which held the plane stable, but this is awesome you've managed to get a decent flying plane without the fins, nice one mate
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RoyBro on July 9, 2013
I finally located the video of the guys from Sacramento Area ParkFlyers who removed the fins from their wings because they were getting broken off all the time during combat flying and they were tired of having to repair them all the time.

http://youtu.be/unRtPb8JIW4

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Acarlos on July 9, 2013
Look for Assassin wing a fin-less one.
More information at:
http://www.crashtesthobby.com/assassin-34.html and
http://www.rcgroups.com/forums/showthread.php?t=1052384

Like RoyBro and Eagle4 said if you cutt the a bit of leading edge it will create drag and stability. everything is explained it this 2 sites!

You´re wing looks great also! And I also prefer fin-less wings :D
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Nardoticus on August 8, 2013
I have flown an Assassin with and without fins. It is much more stable with fins, but no one ever knocked me out of a combat because of a lost tip. But once in a stall, you are going to crash without the tips. - See more at: http://flitetest.com/articles/fin-less-delta-wing-experiment#sthash.g6QoP81X.dpuf
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Fin-less Delta Wing Experiment