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#1
December 10th 09, 11:28 PM
posted to rec.aviation.soaring
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Wing Ballast Distribution
On Dec 10, 3:25*pm, JJ Sinclair wrote:
I believe it was the Constellation that was bpopping rivets in turbulence, the fix was 300# of lead in each wing tip. JJ LAK-12 has 20lbs in the leading edge of each tip. Frank Whiteley 
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#2
December 11th 09, 02:30 AM
posted to rec.aviation.soaring
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Wing Ballast Distribution
Frank Whiteley wrote:
On Dec 10, 3:25 pm, JJ Sinclair wrote: I believe it was the Constellation that was bpopping rivets in turbulence, the fix was 300# of lead in each wing tip. JJ LAK-12 has 20lbs in the leading edge of each tip. Frank Whiteley Front loading of aeroelastic surfaces has a comparable effect to forward (dynamic) balancing of control surfaces like flaps, elevator, ailerons: It pushes away the flutter envelope. Brian W
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#3
December 11th 09, 12:31 AM
posted to rec.aviation.soaring
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Wing Ballast Distribution
Schleicher made us put 3kg of lead down the inside of the outboard
wing leading edge when we installed Heinzies 26.5 meter 'bent wing tips' on the ASH-25. They wanted it spread out for a good 10 feet. JJ Frank Whiteley wrote: On Dec 10, 3:25*pm, JJ Sinclair wrote: I believe it was the Constellation that was bpopping rivets in turbulence, the fix was 300# of lead in each wing tip. JJ LAK-12 has 20lbs in the leading edge of each tip. Frank Whiteley
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