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Forum: Tech Log

29th Mar 2009, 18:18

Replies: 52

Which aircraft have pos/neg elevator lift?

Views: 14,340

Posted By bjornhall

I'd be surprised ... But who knows, might learn...

I'd be surprised ... But who knows, might learn something! :)

Far as I remember, what he did was to tie strings to the outer end of the stabiliser, and observe the direction of the vortices...

Forum: Tech Log

29th Mar 2009, 15:34

Replies: 52

Which aircraft have pos/neg elevator lift?

Views: 14,340

Posted By bjornhall

I don't see that, at least not by the same...

I don't see that, at least not by the same argument. For a positive stability contribution from decalage, the rear surface must have a lower angle of attack than the front surface, as explained in...

Forum: Tech Log

29th Mar 2009, 11:05

Replies: 52

Which aircraft have pos/neg elevator lift?

Views: 14,340

Posted By bjornhall

Seems we're running in circles; still new replies...

Seems we're running in circles; still new replies appearing as to why tail downforce is required for stability, despite multiple explanations and references as to why that is not at all necessary.
...

Forum: Tech Log

28th Mar 2009, 18:01

Replies: 52

Which aircraft have pos/neg elevator lift?

Views: 14,340

Posted By bjornhall

It's a good thing pilots don't need to have a...

It's a good thing pilots don't need to have a clue what makes their aircraft fly. If they did, pilots wouldn't last very long... :E

I think the practical reason why tailplanes usually produce...

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