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Which way it turns?

Unread postPosted: 07 May 2019, 12:20
by Patriot
Image

It looks to me like the tail of this F-35 want to turn right while the wing want to turn left. My first impression was it turns hard left by looking at the TEF deflection but then I looked at the stabs and the control surfaces seem to be out of aligment.. Anybody know what is this F35 doing right there?

Re: Which way it turns?

Unread postPosted: 07 May 2019, 14:01
by sprstdlyscottsmn
short answer, whatever the FCC needs to be doing. It may be at an AOA where the TEF are more for controlling airflow than anything, we don't know.

Re: Which way it turns?

Unread postPosted: 07 May 2019, 14:05
by Patriot
So what is it doing... spins arround z axis? roll left? roll right?

Re: Which way it turns?

Unread postPosted: 07 May 2019, 15:05
by steve2267
Patriot wrote:So what is it doing... spins arround z axis? roll left? roll right?


We will answer your question when you post the next 5 seconds of video.

Could be a snapshot in time of an asymmetric flight controls test.

Could be an application of speed brakes. ETA: Which doesn’t make much sense with the burner lit.

This is purely conjecture, and the “we don’t know” reply is still in play. The stab has a longer pitching moment arm, whereas the flaperon has a longer rolling moment arm. The aircraft may be about to pitch up and roll left, or perhaps just roll hard left and the stab is counteracting any pitching tendency of the flaperon actuation.

Re: Which way it turns?

Unread postPosted: 07 May 2019, 15:07
by sprstdlyscottsmn
That's the point I was trying to make, we don;t have enough information. Depending on what the airflow over the wings is doing, lowering the TEF may actually reduce lift/increase drag on the right side, causing a right yaw/roll.

Re: Which way it turns?

Unread postPosted: 07 May 2019, 15:14
by lbk000
Rudder won't lie though.