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07-21-2008 | 05:40 PM

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From: Peoria Hts, Il. IL

RE: Engine Efficiency

Quote:

Original: mhm21
<<snip>> We would greatly like to use a twin engine setup for enhanced reliability (which is why I'm posting here and not on the UAV forum) and greater power.<<snip>>

Wow. You really should go to the UAV forum.

Efficiency? Choose a single engine. Half the friction.
Reliability? Choose a single engine. Half the opportunity for failure.
Endurance? How far are you going? Choose gasoline (Spark ignited) for a lighter fuel load.

If you really get 25 to 30 oz/sq. ft on a hundred inch wingspan, I believe a G23 would pull it just fine (once it's in the air.) From the meager details you've given, that's the best I can come up with.

Or, check with the people who've done it & get their opinion.

Good luck,
Dave Olson

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