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Old 08-07-2007 | 04:27 PM
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opjose
 
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From: Poolesville, MD
Default RE: Defiant Model 74 Flight problems

ORIGINAL: kwiatkma

Wil,

Another thing is that these canard planes need a lot more ground roll to get in the air. I'm going off a grass field...I'm wondering if these airplane designs are better on a asphalt strip? Anyhow, I'm keeping tabs on this.

My plan of attack is to rebalance at the "new" CG from the calculator above and try another flight. AFTER I'm done with the minor repairs!

-Matt
Yeah pushers do far better off asphalt. There is less of a nose down tendancy due to rolling resistance from grass.

In a tail dragger the rolling resistance helps to lift the tail. In a pusher it helps to keep the nose from lifting.


Don't forget to change the plane's attitude at rest as well. That positive incidence helps a lot.

At the very least being nose heavy may cause the plane not to lift off, but if it does it WILL fly.

Just allow enough space past the end of the runway to stop in case you have to.


If you have G3 you can play with the different C.G. and incidence combinations to give you an idea of how your plane may fair.