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Old May 14, 2006, 10:27 PM
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Laguna Beach, California
Joined Nov 2004
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Portable Plane with Ripstop Nylon Wings (70" wingspan)

Here's my new scratch-built plane. I designed it for aerial photography, but wanted it to be small enough to fit on the rear parcel shelf of my MX-5 Miata.

It's got a 70" wingspan, but as you can see from the pics it collapses down pretty small. The fabric collapses like an accordian while on the lower carbon wing spars. When the upper spars are attached the wing pulls out and attaches to nocks on the ends of the spars using shock chord (elasticated thick string).

The airfoil is created by shaped alumium ribs that I slid in to pockets sewn in to the wing. The ends of the rods plug in to kite standoff connectors that slide along the carbon spars.

Two Slow Stick aluminum booms are stuck end to end to create the fuselage. I used magnets to provide linkage between the servo control rods on the two booms. However, it turned out that the magnets weren't strong enough so I'm going to replace them with much stronger ones.

I've got it to fly, but it seems that the rudder isn't big enough for the job. On the two occassions I've flown it so far I had trouble steering at times. That was in 6+ mph wings. I'm going to make the rudder larger. This isn't exactly a fast plane, so at times the airspeed across the rudder must be very low.
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Last edited by LittleJon; May 15, 2006 at 06:55 PM.
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