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F-35 accident Fort Worth 15/12/22 - pilot ejected ok

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F-35 accident Fort Worth 15/12/22 - pilot ejected ok

Old 15th Dec 2022, 18:48
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F-35 accident Fort Worth 15/12/22 - pilot ejected ok

Interesting video... hope pilot is uninjured.


Last edited by treadigraph; 17th Dec 2022 at 13:04. Reason: Change video after original link barred...
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Old 15th Dec 2022, 19:44
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My (totally untrained) eye thought the descent was a bit quick...no idea what happened after the bounce though. And then the throttle seems to stay open?
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Old 15th Dec 2022, 19:47
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Good seat performance! Why the delay? Trying to shut it down, or waiting a couple of precious seconds for a better seat profile?

Oh well, sh1t happens, and a good human result.
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Old 15th Dec 2022, 19:55
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Yikes, imagine the sudden loss of the lift fan (mechanical, software glitch, perhaps associated with the bounce) would look something like that, with a significant pitch-over. Still seems to be lift being generated by the rear nozzle.
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Old 15th Dec 2022, 20:05
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Something went a bit squirrely. That's four F-35B pilot saves for that seat, nice bit of engineering.
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Old 15th Dec 2022, 20:18
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Salute!

Wow, I want of those seats for my truck after the initial crash on the highway.

Having seen many videos of the plane landing on the boats, something at last 2 or 3 seconds went awry and touch was not like I have seen.

Gums sends...
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Old 15th Dec 2022, 20:33
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Going to be a heavy mess bill!

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Old 15th Dec 2022, 20:52
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An F-35 jet from Lockheed Martin crashed during a test flight on Thursday morning.
That’ll be a fail then, glad he got out.


White Settlement police chief Chris Cook says the pilot safely ejected.

Images show the jet intact on the grass near White Settlement Road.
Well, bar the nose leg, the canopy, the seat etc etc etc..


https://www.fox4news.com/news/f-35-j...-in-fort-worth

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Old 15th Dec 2022, 21:05
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If I’m not mistaken the F35B(?) Mavy version has an automatic ejection sequence if a certain sumthing sumthing happens with the vertical thrust.
This may have been the airplane ejecting the pilot.
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Old 15th Dec 2022, 22:07
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The pilot was probably frantically trying to press CTRL-ALT-DEL while it was squirreling around on the ground, before giving it up as a bad job!
Guess we will find out more in due course, but it certainly looked like a quick power cut would have settled things down quickly, if that were possible at the time.
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Old 15th Dec 2022, 22:57
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Isn’t the F-35 supposed to be rated for very high vertical rates upon landing? The gear in this event doesn’t seem to “give” very much.
If he was testing high vertical rates on touchdown the results appear to have been suboptimal.
Mind you the video quality is not great on my Ipad.
Glad the pilot ejected safely.
His friends will probably be sending gag gifts of underwear for Christmas.
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Old 15th Dec 2022, 23:27
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Salute!

We have seen at least two nose gear collapses with the 35, and maybe there's a design flaw that can be fixed.

I was surprised the test pilot waited until the plane stopped rotating and then punched. And with the Eglin nose gear collapse in mind, he might have just decided to ride it out. Then the Japanese nose gear thing a few weeks ago.

Another attaboy for Martin Baker, and I don't think their system acted on its own...rather, the pilot pulled the handle.

Gums sends...
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Old 16th Dec 2022, 02:34
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Holy freaking schmoley.
Have just given Mrs T a heads up - she'll get that on the TV News tonight down here in Oz!
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Old 16th Dec 2022, 03:16
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Five seconds between ejecting and landing! That’s faster than climbing out after a normal shutdown. Well done MB.
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Old 16th Dec 2022, 06:07
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Originally Posted by gums
Salute!

We have seen at least two nose gear collapses with the 35, and maybe there's a design flaw that can be fixed.

I was surprised the test pilot waited until the plane stopped rotating and then punched. And with the Eglin nose gear collapse in mind, he might have just decided to ride it out. Then the Japanese nose gear thing a few weeks ago.

Another attaboy for Martin Baker, and I don't think their system acted on its own...rather, the pilot pulled the handle.

Gums sends...

Looks like he waited until it was upright, I wouldn’t think ejecting sideways on the ground would end well ?
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Old 16th Dec 2022, 06:58
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I think the Japanese nose gear failure is completely unrelated. There are long drag marks from the main gear indicating the brakes were locked to stop the wheels turning. I would not expect most nose gear to handle being pulled opposite to the braking direction while the main gear is skidding.

Edit: Excluding catapult launched aircraft, which this does not appear to be.

Last edited by MechEngr; 16th Dec 2022 at 09:02.
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Old 16th Dec 2022, 07:57
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F35 Crash

It seems to me that this is not a gear related incident. After a relatively gentle bounce the aircraft is initially level, when it suddenly becomes unbalanced and pitches strongly nose down until it contacts the ground. At this point the nose gear fails but clearly there is still full thrust from the aft nozzle causing the aircraft to rotate on the ground. I would suggest that the forward LiftFan has failed in some way. Pleased to see the ejection working as advertised.
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Old 16th Dec 2022, 08:02
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The Martin-Baker Mk16-US16E ejection seat as fitted to the F-35B does indeed have an active automatic ejection system which fires the seat when certain criteria are sensed. These are low speed, low altitude and adverse pitch rate.

The same seat fitted to the F-35A and F-35C does not have this system.
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Old 16th Dec 2022, 08:28
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Test Flying The Joint Strike Fighter by Graham Tomlinson 17 Jun 2011
"...In the unlikely event of the lift fan failing catastrophically the aircraft would pitch inverted in 0.6 seconds, and the pilot is protected by auto-ejection signalled by pitch rate and attitude...." http://myweb.tiscali.co.uk/hawkerass...kefighter.html
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Old 16th Dec 2022, 09:31
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Originally Posted by MechEngr
I think the Japanese nose gear failure is completely unrelated. There are long drag marks from the main gear indicating the brakes were locked to stop the wheels turning. I would not expect most nose gear to handle being pulled opposite to the braking direction while the main gear is skidding.

Edit: Excluding catapult launched aircraft, which this does not appear to be.
I think the point being made isn't that the nosewheel failures are linked, but that the nosewheel may have an inherent weakness that needs to be addressed.

The Martin-Baker Mk16-US16E ejection seat as fitted to the F-35B does indeed have an active automatic ejection system which fires the seat when certain criteria are sensed. These are low speed, low altitude and adverse pitch rate.

The same seat fitted to the F-35A and F-35C does not have this system.
Indeed, though I don't think the automatic ejection system is what sent the pilot skywards on this occasion, as whatever parameters would have caused the seat to fire automatically were present some seconds before it actually fired. Suspect the pilot made the choice and ejected himself.
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