How to induce Deep Stall
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a deep stall is just a departure (being a stall in “departure” conditions… typically high power - low airspeed) that stabilises at 60 degrees angle of attack… right where there is no control authority.
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A deep stall ends in low kcas (<150) at a stable level atitude. The FLCS does not have control authority. The pilot does with MPO. Btw the AoA indicator only goes to 32º.
Departure of flight ends with the a/c tumbling out of control. The pilot should try to recover, he release the stick and let the FLCS do it. Then it possilbe that a/c recovers into deep stall and the pilot must recover from that. -
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A deep stall ends in low kcas (<150) at a stable level atitude. The FLCS does not have control authority. The pilot does with MPO. Btw the AoA indicator only goes to 32º.
Departure of flight ends with the a/c tumbling out of control. The pilot should try to recover, he release the stick and let the FLCS do it. Then it possilbe that a/c recovers into deep stall and the pilot must recover from that.technically to be a departure it also needs to be low airspeed. otherwise it is some other variety of stall.
the indicator might only go to 32 degrees, but the aircraft can and does go to 60+. I have on 2 separate occasions managed 180 degrees AoA for a few seconds…
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technically to be a departure it also needs to be low airspeed. otherwise it is some other variety of stall.
nope,
attack TWO limiters at the same time
, asymmetrical loads, high altitude can cause a lost in vertical stab and rudder authority causing the a/c to spin out of control irl. A snap roll is a departure of flight. I’m talking about two different things.
the indicator might only go to 32 degrees, but the aircraft can and does go to 60+. I have on 2 separate occasions managed 180 degrees AoA for a few seconds…
call it what you want.
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that is an accelerated stall, not a departure stall.
a snap roll is also an accelerated stall.
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Are you kidding me ……
Deep stall is so easy… Job follow Coco’s post.
Or ill show you how tonight.
We can do inverted or we can spin while we flutter.
Latter…
PS: or is just my natural inability to get there.
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are you using the AFM?
Some of these deep stall instruction did work in F4AF. -
For tour information the current AFM is just just a bit more resistant to roll departure than the real .
This is due to a number I slightly changed in the FLCS a Loooong time ago and that I completely forgot to change back before release
This will be fixed in next BMS version (with a lot of other FM goodies )
But be reassured, this is very very subtitle difference
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Will we finally be able to recreate this:
I tried it with 3 missiles on one wingtip and 0 on the other, and still couldn’t get a departure like that
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Will we finally be able to recreate this:
I tried it with 3 missiles on one wingtip and 0 on the other, and still couldn’t get a departure like that
Well this is not difficult as i already succeeded in doing it -as many others - secret is in speed and roll….
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Please tell me the secret, because I have tried many times at 30,000 feet, M0.9~0.95 and never got a departure.
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That case in that video was one of the first things i tried after BMS came out. Works. M0.9 is too fast for 30kf, try it slower.
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In the video he says it is over 35k that the test was done, rolled 90 right and aft stick, is that what you try in bms too?
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@A.S:
That case in that video was one of the first things i tried after BMS came out. Works. M0.9 is too fast for 30kf, try it slower.
Interesting…the test pilot said “transonic” IIRC…is M0.9 not close to being transonic?
In the video he says it is over 35k that the test was done, rolled 90 right and aft stick, is that what you try in bms too?
I tried it at altitudes varying from 25k to 37k. Rolled 90, aft stick. All I got was horrendous energy loss.
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you know, its a very heavy switch to throw, the MPO. its spring held - you have to hold it in the override position. its a very strong spring…
once again, you wont stall by holding 60 degrees… the FLCS will limit your pitch authority and nose down… and by this point you should have no rudder authority.
any time the nose drops, its generally the FLCS doing it for you, not the result of interrupted airflow over the wings.
Maybe it just works in the BMS flight model? But it works. Try it
Also, to answer the MPO question, the easiest answer can be found like so:
- Get into a deep stall (MPO off)
- Switch to external view and move your stick full forward and aft while watching the elevators.
- Now turn MPO on
- Switch to external view and move your stick full forward and aft while watching the elevators.
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I’m gonna try this again. I was using a -D model before with just a center line tank and asymmetric missiles. I noticed the video has a -C model with a TGP as well.
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As I said, that’s the only function of MPO: disconnect the neg G limiter.
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Saw this and thought it was cool. No info on how the jet was loaded, but gives a HUD view of departure in left turn at M0.91 and 36~37k:
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Nice find. I still have not seen a r/l vid with a comfirmed deep stall. They must as rare in r/l as they are in F4.