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Old Jul 10, 2015, 09:43 AM
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Flying Wing with Landing Gear

Flying Wing with Landing Gear.
Every flying wing I have seen has not had landing gear, and just about everyone has crashed on the first launch. Mine has never crashed, yet.
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Old Jul 10, 2015, 10:32 AM
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Good job!
Others have done landing gear (Example: see http://www.rcgroups.com/forums/showt...=horten&page=2, post 29, for video) and it doesn't laways work out so well.
On a windy day, I perfer to hand launch. If the gear is halfway decent, it tends to be heavy and the added drag is definitely noticeable - but it is so cool/satisfying to do proper take-off rolls when the wind permits
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Old Jul 11, 2015, 03:23 AM
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This is my latest design.
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Old Jul 11, 2015, 08:59 AM
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My research into tricycle landing gear for a scratchbuilt
flying wing has found:

1. The front wheel should be far as possible forward.
And a steerable front wheel is needed to taxi with
elevons only.

2. The two rear wheels mounted just behind center
of gravity of the wing....want to position them so when
you push down slightly on the back of the wing with a force
of only about 3 to 4 ounces the front wheel lifts off the
ground.

3. The height of gear is very important...must be sized so the plane
has an Angle Of Attack of 4 to 6 degrees setting on the runway.

I am scratchbuilding EPP 'Simitar' style wings that Bill Evans
created way back in the 90's...source of the info.

Edit:.... mention props. Obviously this setup works better
with tractor motors and props sized to fly good but still clear
the ground. Or twin tractor motors...check out CrashTestHobby
with their twin Hercules which uses rudders and landing pads
not wheels.

Simitars use a fuse which helps.

Anyway...not all 'wings are landing gear friendly' and
Youtube has some of those crashes...

Research is much cheaper...

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Last edited by Number_6; Jul 11, 2015 at 09:19 AM.
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Old Jul 11, 2015, 09:46 AM
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I have been flying RC since 1972 and in that time have broken many front wheel steering arms. I no longer use those weak steering arms. I make an arm from 1/4" cutting board plastic that I screw into the front steering coil. In addition I use a 1/16" music wire shock relieve rod to connect the steering servo to the front wheel. You can see the steering rod coils if you blow up the photo.
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Last edited by villapilote; Jul 12, 2015 at 10:15 AM.
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Old Jul 11, 2015, 11:58 AM
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Nice setup you have made...and on a pusher motor wing.

Thanks for the details.

I prefer pusher motor wings and will try
that for sure.

Just finished a 'simitar looking' EPP 55" FS wing
but put the motor as a pusher and close to the centerline
for least thrust angle issues.

Next project is a 'Nurf' style FS pusher wing with fuse.
Flying Foam has been cutting many EPP cores for me and
I will use your landing gear arrangement, Flying Foam cores and
style the fuse like their Nurf except pusher motor to be on lower thrust
angle more through the CG, center of lift of the wing.

Thanks again for the pic...learned a little more today!

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Old Jul 11, 2015, 04:37 PM
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Hi NUMBER_6
I have been surprised at how well protected the prop is in a pusher configuration. In hundreds of flights I do not believe I have ever broken a prop.
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