Enough thrust for a trainer?
08-01-2005, 08:21 AM
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Enough thrust for a trainer?
My girlfriend recently found an old, unbuilt balsa model kit dating from somewhere in the 80s in the attic of a relative. Now she and I have put the plane together, just for fun.
It has a wingspan of 150cm (5 feet), and weighs 1.3kg (46 ounces). The instructions recommend a 0.15 size glow engine.
I have a "Apache 2213/22" 200W brushless electric motor, for my Formosa electric park-flyer.
My question is this:
Would this 1.3kg plane fly with my little electric motor?
The "Apache" motor has a static thrust of 850g (30 ounces). So we're talking a thrust/weight ratio of approx 1 to 2. Since most planes I've been in contact with are very over-powered, I don't have any intuition if 1/2 thrust/weight is flyable at all :-). Ofcourse I expect no aerobatic performance.
It has a wingspan of 150cm (5 feet), and weighs 1.3kg (46 ounces). The instructions recommend a 0.15 size glow engine.
I have a "Apache 2213/22" 200W brushless electric motor, for my Formosa electric park-flyer.
My question is this:
Would this 1.3kg plane fly with my little electric motor?
The "Apache" motor has a static thrust of 850g (30 ounces). So we're talking a thrust/weight ratio of approx 1 to 2. Since most planes I've been in contact with are very over-powered, I don't have any intuition if 1/2 thrust/weight is flyable at all :-). Ofcourse I expect no aerobatic performance.
08-02-2005, 12:45 AM
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RE: Enough thrust for a trainer?
If all other things are correct, the plane appears to have decent lift capability with it's wing size, proper battery and prop, Yes. 30 oz of thrust should fly a 46oz plane, if you aren't wanting to go unlimited vertical!
