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Search: Posts Made By: FE Hoppy
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Forum: Tech Log
29th Mar 2009, 14:06
Replies: 52
Views: 14,259
Posted By FE Hoppy

I would submit that a canard does not have to...

I would submit that a canard does not have to always produce lift. The same argument that a tail "could" produce lift applies to a canard producing down force.

Use a stick pusher to prevent any...
Forum: Tech Log
28th Mar 2009, 19:36
Replies: 52
Views: 14,259
Posted By FE Hoppy

Could some one please post a commercial aircraft...

Could some one please post a commercial aircraft of standard configuration either past or present that in any trimmed regime produces either a) no aerodynamic force from its tail plane or b) lift...
Forum: Tech Log
27th Mar 2009, 20:34
Replies: 52
Views: 14,259
Posted By FE Hoppy

Don't forget that for anything but a symmetrical...

Don't forget that for anything but a symmetrical Airfoil the zero lift AOA will be negative so even with positive incidence a non symmetrical stab flying in down wash will be creating down force.
Forum: Tech Log
27th Mar 2009, 06:20
Replies: 52
Views: 14,259
Posted By FE Hoppy

here's the maths...

here's the maths (http://www.desktopaero.com/appliedaero/configuration/tails.html)
Forum: Tech Log
26th Mar 2009, 23:18
Replies: 52
Views: 14,259
Posted By FE Hoppy

172 driver. Beware the internet. It's not all...

172 driver.
Beware the internet. It's not all correct.

I say again "I'm not aware of any commercial aircraft which is not positivley stable."

There are no commercial jets in service today that...
Forum: Tech Log
26th Mar 2009, 11:48
Replies: 52
Views: 14,259
Posted By FE Hoppy

In order to have positive stability in a...

In order to have positive stability in a convetional layout the tail must pruduce down force and the C of G must be ahead of the neutral point.

I'm not aware of any comercial aircraft which is not...
Showing results 1 to 6 of 6


 
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