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F-35 pilot held 50-minute airborne conference call with engineers before crash

cnn.com

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Re: F-35 pilot held 50-minute airborne conference call with engineers before crash

#431

Post by duck »

somerandomqaguy wrote: post #389
wiml wrote: post #383

Earlier quoted context omitted.

I think my mental model of hydraulic brakes is too simple. Where is there a low pressure region in a brake line? When I stomp on the brakes, isn't the working part of the hydraulic system going to be at higher pressure?

There isn't a low pressure braking region in the brakes. But brakes can get really hot. Passenger brakes can easily get over the boiling point of water. Keep braking long enough and adding enough heat, and they'll get over the boiling point of brake fluid under pressure. Thing is, brake fluid is incompressible. Brake fluid vapor however is very much so a compressible gas. Even more so: the water in the brake fluid ha…

The one piece of good news is the highest point in Florida is just 345 feet above sea level so I think they'll be okay. :)

Re: F-35 pilot held 50-minute airborne conference call with engineers before crash

#432

Post by keepamovin »

drdo wrote: post #429
keepamovin wrote: post #415

Earlier quoted context omitted.

Visceral grok: there’s a reason supporting yourself on crutches versus standing sucks; your spine is meant to bear load. I guess a taser like electro stimulation targeted to get the right muscles to tense up to ease a bit of pressure on the joints might help But i have no idea

Doesn't the pilot press the button to do it himself? It's not like it's a surprise, he can tense the muscles beforehand.

True, but how much control do you have? Seems taser can occasionally provide more muscle control than volition, as that is why it incapacitates.

Re: F-35 pilot held 50-minute airborne conference call with engineers before crash

#433

Post by dr_kiszonka »

LeifCarrotson wrote: post #419
stackskipton wrote: post #308

Earlier quoted context omitted.

I’ve always wondered why weight on wheel modes don’t have more checks, detecting weight on wheels but seeing 150+ Indicated Air speed and RALT is greater then 15ft, maybe issue caution instead of screwing with flight mode.

There's value in simplicity. Every decision that a flight computer makes is based on a leaky abstraction of the world, and it's important to be able to reason about those states without excessive complexity. If a programmer, engineer, or pilot needs to think about when the aircraft will transition to "on ground" mode, and the answer is "when the weight on wheels sensors say the landing gear is not fully extended", th…

Great comment.

Re: F-35 pilot held 50-minute airborne conference call with engineers before crash

#435

Post by hluska »

LorenPechtel wrote: post #375
hluska wrote: post #315

Earlier quoted context omitted.

It’s a massive issue - crashes are investigated and it’s not uncommon for a pilot to lose their jobs if they deviate from procedures. A few years back, a Marine Colonel was relieved of a prestigious command after being found to have ejected too early: https://www.military.com/daily-news/2024/10/31/pilot-of-f-35...

Note that that was the third review. The first two exonerated him--the real problem was his helmet wigged out. His plane was actually flyable but it was lying to him. And the rule was if the plane is not responding properly to pilot commands below 6,000' AGL eject.

These details have nothing to do with the comment I was replying to. They’re irrelevant.

Re: F-35 pilot held 50-minute airborne conference call with engineers before crash

#436

Post by burnte »

keepamovin wrote: post #256
burnte wrote: post #234

Earlier quoted context omitted.

It depends on why and your medicals. There's not hard limit of 2.

I guess trashing a couple hundred million dollars is a occasionally considered an issue tho looking at how contracts have traditionally been funded you’d be forgiven for thinking it wasn’t

Depends on who trashed it and why. Because you screwed up? You ride the bus. Because you were piloting an experimental craft in a test? Take a week off. Because you were in a billion dollar jet and the landing gear broke making the plane think it was on the ground? Definitely not the pilot's fault.

Context is always important.

Re: F-35 pilot held 50-minute airborne conference call with engineers before crash

#437

Post by LorenPechtel »

HPsquared wrote: post #427
LorenPechtel wrote: post #379

Earlier quoted context omitted.

I believe the only relevant factor is airspeed.

Airspeed, altitude, vertical speed.

Make it two motors, they either burn together or they burn one after the other. Neither altitude nor vertical speed is going to matter as you get the same impulse. Airspeed matters as you have to clear the tail.

Re: F-35 pilot held 50-minute airborne conference call with engineers before crash

#438

Post by keepamovin »

burnte wrote: post #436
keepamovin wrote: post #256

Earlier quoted context omitted.

I guess trashing a couple hundred million dollars is a occasionally considered an issue tho looking at how contracts have traditionally been funded you’d be forgiven for thinking it wasn’t

Depends on who trashed it and why. Because you screwed up? You ride the bus. Because you were piloting an experimental craft in a test? Take a week off. Because you were in a billion dollar jet and the landing gear broke making the plane think it was on the ground? Definitely not the pilot's fault. Context is always important.

What's the most number of ejections of a military pilot?

Re: F-35 pilot held 50-minute airborne conference call with engineers before crash

#440

Post by rswail »

Sharlin wrote: post #291
rswail wrote: post #245

Earlier quoted context omitted.

Army, Marines, Navy?

Air Force. The Army doesn't operate the F-35.

Heh, I meant to say Air Force, can I get away with saying that they used to be part of the Army?

Didn't think so :)

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