At 08:46 PM 8/10/02 +1000, you wrote: >Thanks very much Mike. > >How do I use the square root of the wing loading to generate the >loaded figures? > >Thanks > >Ed
Ed, Take loaded weight(or wing loading) divide by weight(or wing loading) for this polar(10.5 x 33.2 wasn't it?)Take square root of this result, multiply all points and sink rates by this number, plot new loaded polar. This is how it is done generally but there may be some favourable Reynolds number effects due to flying faster for a given angle of attack at higher weights. Then there is the theory that the polar may be a little worse than this due to the water ballast distorting the contour of the lower wing skin. Both are small and may be neglected for this exercise. Then buy/borrow/steal a copy of Reichmann's "Cross country Soaring". A little dated in some areas now but still covers the basics of the theory. Trolling around www.amazon.com I see they reckon they can get you copy. Mike Borgelt Instruments - manufacturers of quality soaring instruments phone Int'l + 61 746 355784 fax Int'l + 61 746 358796 cellphone Int'l + 61 428 355784 Int'l + 61 429 355784 email: [EMAIL PROTECTED] website: www.borgeltinstruments.com -- * You are subscribed to the aus-soaring mailing list. * To Unsubscribe: send email to [EMAIL PROTECTED] * with "unsubscribe aus-soaring" in the body of the message * or with "help" in the body of the message for more information.