[Red Badger]

[Lonesome in Massachussets]

Harmonic resonance is the bane of mechanical engineers, and especially aircraft engines.

[Yo-Yo]

December 2022 Ft Worth F-35B Stealth Fighter ground ejection result of "harmonic resonance"

Not sure what that is. Could you hum a few bars?

The full accident report is still months away, but I wouldn't be surprised from watching the video that the "harmonic resonance" was first set up in the drive shaft powering the forward lift fan when the aircraft first hit the tarmac too hard.

Video of crash:

https://youtu.be/UdSVMgay0MI

[TalBlack]

Looks to me like as soon as that cockpit was a bit more upright the pilot got the hell out of there intentionally.

[Chainmail]

Yeah, sure. The pilot's rate of descent was too fast and he bounced when he hit and then the plane landed on its front landing gear leg and then broke it - the pilot didn't shut the throttle off.

You can hear the engine going at high thrust when he punched out.

Brain lock.

[minnesota_bound]

FTA: ... while the a/c was on the ground

They cannot even spell aircraft.
The writer is texting too much.

[DesertRhino]

“Remarkable” because he ejected while on the deck? Not exactly the first time that’s happened.
The plane was not under his control anymore, and was an instant from flipping. No good reason to burn to death at that point. Good decision...

[Flash Bazbeaux]

Is that anything like “sinusoidal repleneration”?

The turbo-encabulator never had that problem.

https://www.youtube.com/watch?v=Ac7G7xOG2Ag&t=6s