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basic aerodynamics
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03-12-2004 | 09:47 AM
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rmh
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RE: RE: basic aerodynamics
OK here is a setup - remember you drop the wing loading to zip -then add 2-1 power capabilities -the result is a model which will fly at about any attitude.
the SPEED is so low and the angles of flight are so high that flight is basically thrust with guidance by the ailerons etc..
These are really crossbreed copters and fixed wings.
at low speeds they are still very controllable, in level flight --but they ain't freeflights -by any stretch of th inagination.
It is a bit like some full scale fighters - where the computer keeps em from "departing".
There are thousand of these types out there now and the market is really growing.
The CG can have a very broad usable range.
The more one goes to high angles (vectored thrust) -the furher aft it can be located.
They are goosey but they do fly .
The model here has under 5 oz loading per sq ft and power is at 30 ozs thrust -for a 13 oz model.
Not calculated - tested
Note the control setup under the wings-with the radio used, I can instantly choose sensitivity or mix of aileons and elevators etc., to give slight trim changes ailerons (droop or raise) to flaperons or add flapperons on a fully integrated basis.
Sound complex but it really isn't.
These integrations are pre programmed and one switch selects combos.
a momentary push switch , adds trim in small increments .
you can do all this easily.on the "fly"
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