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Old October 4th, 2006, 03:49   #11
fish314
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Default Re: Aerodynamics Question for class

Hey Jace, I noticed no one addressed the third question for you, so I figured I'd give you a hand with it.

Set weight equal to lift and use the lift equation.

W=L=1/2CL*S*rho*Vs^2. You already know Vs^2 and the max gross weight (4000lbs.), so solve for that whole mess in between (1/2 *CL*S*rho=.8650519).

Then go back with that information and use a new weight (4000lbs *2.4 g's)= 9600lbs.

Put that back into the lift equation and use the 1/2 CL S rho that you just solved for and then solve for the new Vs.

9600=.8650519Vs^2.

Vs=Sqrt (9600/.8650519)=105.345

Oops. Edited the final formula.
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Dude, what are you trying to do? Land the airplane or adjust the field elevation?

Last edited by fish314; October 4th, 2006 at 03:50. Reason: Mistaken formula.
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