Author Topic: wing washout modelled?  (Read 290 times)

Offline Citabria

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wing washout modelled?
« on: May 14, 2004, 02:46:35 AM »
noticed in ah2 when many planes are stalled ailerons are very powerful.

is this from wing washout modelling?

seemed strange because ailerons could neutralize a spin and send the spin in other direction. making rudder a secondary recovery instead of primary.

is this correct?
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Offline Charge

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wing washout modelled?
« Reply #1 on: May 14, 2004, 03:45:39 AM »
What other a/c than Spit did have washout??

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Offline Kweassa

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wing washout modelled?
« Reply #2 on: May 14, 2004, 03:57:14 AM »
It's actually baffling, since I've never seen that happen in AH1.

 Like, this happens to me a lot of times when I try a high-yoyo during low-speed maneuvering. The plane goes up, kick rudder, and then the nose comes down at very low speed and the plane descends. I use a lot of high-yoyos to catch planes like Spitfires with the 109.

 But a single mistake will send your plane in a decent which you cannot recover, the plane begins wobbling side to side. It rolls left, apply aileron, and then it somehow overcorrects itself and sends it rolling to the other side. The only way to stop is by gaining some more speed by a steady decent - except there's no room to do that when you're maneuvering low and slow!

 That caused me a lot of deaths in 109s AH2 Beta ;) This is what you guys are talking about, right?

 I'm curious too - do these things really happen in real planes?

Offline Citabria

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wing washout modelled?
« Reply #3 on: May 14, 2004, 05:01:24 AM »
ive never experienced this on the real planes ive flown ive found ailerons to get mushy when near stall on planes like cessnas and i think cessnas have the washout wing design.

rudder is the way to correct for a spin and stall and down elevator is said to be required on some ww2 planes. havent read about ailerons being correct recovery method on any ww2 aircraft ive seen a manual for.

i thought using ailerons stalls wing out even more at stalled aoa because moving the aileron in down position increases lift but increases angle of attack as well?

in ah2 ailerons are ultra effective at stall speeds and when completely stalled ailerons go hyperactive.

i can't say for certain whether its wrong or right but it seems very wierd and inconsistent with what i have experienced and read about real aircraft.
« Last Edit: May 14, 2004, 05:06:47 AM by Citabria »
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Offline Adogg

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wing washout modelled?
« Reply #4 on: May 14, 2004, 11:53:06 AM »
Spins are due to an absence of airflow over one wing yes? i.e. one side of the aircraft stalls out - would that not lead to one set of airlerons being disabled or flailing around in turbulent airflow and hence leave you with only one usable control surface to govern roll? My experience (granted virtual) also suggests that if you have one surface disabled the aircraft responds more sluggishly. And a plane will respond more sluggishly as it approaches stall speed.

So yes this seems inconsistent.

Spin recovery (again this is book knowledge not practical) recommends neutralizing the airlerons and countering the rotation of the aircraft with rudder only until you end up in a controlled dive from which you can then recover. The idea is that continued airleron use can compound the airflow problems that started the spin in the first place and merely spin you faster.

Private pilots that haven't learned proper spin recovery tend to try and use airlerons  and end up compounding the spin and hit the ground and die. If they're lucky they black out first.

Here's a thought... if you have a copy of MS FS try it out there - practice some stall/spin recoveries in the model of Patty Wagstaff's stunt plane.  Try the yo-yo problem out. It might or might not help *shrug*