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Forum: Aerodynamics
03-06-2015, 05:49 AM
Replies: 43
Views: 11,135
Posted By JetPlaneFlyer

No, it doesn't 'warn you' it helps prevent a...

No, it doesn't 'warn you' it helps prevent a stall starting at the tips, which was what we were talking about.

Stall horns and stick shakers 'warn you'.
Forum: Aerodynamics
03-06-2015, 05:47 AM
Replies: 43
Views: 11,135
Posted By JetPlaneFlyer

No you don't really. Washout is when you change...

No you don't really. Washout is when you change the lift coefficient distribution along a wing (reducing to the tip). Changing the thickness of a symmetrical airfoil doesn't do that because the lift...
Forum: Aerodynamics
03-05-2015, 10:11 PM
Replies: 43
Views: 11,135
Posted By JetPlaneFlyer

That (decreasing camber toward the tip) still...

That (decreasing camber toward the tip) still only works the normal way up.

You can use a sharp leading edge near the root and a more rounded leading edge near the tip to help prevent tip stall,...
Forum: Aerodynamics
03-05-2015, 10:01 PM
Replies: 43
Views: 11,135
Posted By JetPlaneFlyer

That's all true, you can control them beyond a...

That's all true, you can control them beyond a stall. But they don't use any special 'tricks' to do it... just large control surfaces, lots of thrust and light wing loading.

Pretty much all 'full...
Forum: Aerodynamics
03-05-2015, 09:07 PM
Replies: 43
Views: 11,135
Posted By JetPlaneFlyer

Washout can be seen on many WWI and earlier...

Washout can be seen on many WWI and earlier aircraft.

To be honest 3D planes don't really brake any 'rules'. They are just lighter, have better thrust/weight ratio and have much larger control...
Forum: Aerodynamics
03-05-2015, 08:33 PM
Replies: 43
Views: 11,135
Posted By JetPlaneFlyer

It's called 'washout' and it's the oldest...

It's called 'washout' and it's the oldest aerodynamic trick in the book. Not so good for aerobatic planes that have to fly inverted though!
Forum: Aerodynamics
08-18-2013, 05:48 PM
Replies: 43
Views: 11,135
Posted By JetPlaneFlyer

Maybe do-able with telemetry and vibrate alert...

Maybe do-able with telemetry and vibrate alert already available on some Tx's:D
Forum: Aerodynamics
08-10-2013, 06:36 PM
Replies: 43
Views: 11,135
Posted By JetPlaneFlyer

Sorry:red: Guess we both feel the same way...

Sorry:red:

Guess we both feel the same way because I know whenever I mention 'tip-stall' someone will come along and say it doesn't exist because full size pilots don't use the term.
Forum: Aerodynamics
08-10-2013, 02:32 PM
Replies: 43
Views: 11,135
Posted By JetPlaneFlyer

You dont look hard enough. Here's an extract...

You dont look hard enough.

Here's an extract from NASA paper # 1589 on Leading edge modifications to prevent stall/spin on light aircraft:...
Forum: Aerodynamics
08-10-2013, 09:11 AM
Replies: 43
Views: 11,135
Posted By JetPlaneFlyer

If you remember one thing remember this: ...

If you remember one thing remember this:

Highly tapered wings = tip stall

If you want an easy flying plane with no nasty habits it's best to be wary of strongly tapered wings (anything with a...
Forum: Aerodynamics
08-09-2013, 12:19 PM
Replies: 43
Views: 11,135
Posted By JetPlaneFlyer

Actually taper is nothing directly to do with...

Actually taper is nothing directly to do with adjusting span wise flow. The main reason that wings use taper is to adjust span-wise lift distribution and so to produce less induced drag. The aim is...
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