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Old 09-16-2003 | 08:44 PM
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WildManMisfit
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From: Traverse City, MI
Default RE: CG and Stall Speed

Schmleff

I put the question out to see what some other thought on the subject. I disagree with you on airspeed. You are correct that a wing will stall at the critical AOA. However the actual airspeed of the aircraft will be different depending the the location of the C.G. You are correct that and extreme nose heavy aircraft will not stall because it simply runs out of elevator however lets just say the forward most C.G. that will still allow a stall v.s. the rear most C.G. the aircraft is still stable.

What makes and aircraft stable... it is having the C.G. in front of the center of lift (C.L.) The farther the C.G. is in front of the C.L. the more down pressure is needed on the horizontal stab to keep the aircraft level thus creating more wing loading. The higher the wing loading the higher stall speed. Thats why LearJets land at 130 kts and Pipers land at 65kts. When you increase the wing loading i.e. moving C.G. forward, increasing aircraft weight, making wing smaller etc. you increase the speed at which the wing will reach the critical AOA. Unless they changed the books on aerodynamics lately or models do not fly the same and full scall...I believe you are incorrect.

Regards
Mike
ATP/MEII/LR-JET