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Old 10-16-2011, 11:05 PM
BABAR BABAR is offline
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Join Date: Nov 2010
Posts: 23
Default Helo lugs-wire vs paper?

Helicopter rocket

Don't have a tower or piston
Launch guides have to go on rotor attached to outside surface.
What are pros and cons of wire guides vs two small paper launch lug segments?
specifically regarding mass and drag, but also anything else?

Since the rotor has to rotate, the lugs are parallel to flight path on boost but perpendicular to rotation on recovery.

Also while thinner wire is lighter, is it more likely to hang on the launch rod?

Thanks
Tom
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Old 10-17-2011, 09:03 AM
kevinj's Avatar
kevinj kevinj is offline
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Join Date: Apr 2009
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If you are looking for low drag on rotation, the wire loops would be better, but then you are adding mass to one blade which throws your balance off under rotation as well. Unless you add the guides to each rotor. Unless you add them to each blade, which is more mass.

A lot of times for models with blades that fold down the outside, there is enough space to just slide the model on the rod between the hinges. Inthe attached picture the blue circle is the launch rod.

If you're just building for fun, then it doesn't really matter all that much.

kj
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