737 crash in China (Page 3/8)
MidEngineManiac MAR 22, 05:19 PM

quote
Originally posted by Hudini:

There is a ton of fake stuff being posted. Mem, you know that's not how airplanes work. If the tail just suddenly detaches the aircraft does not act like a missile, it acts like a frisbee. Look at the American Airlines crash in Jamaica, NY when the FO was kicking the rudder so hard it broke the vertical stab. Now if an aircraft is accelerated enough the tail might detach AFTER reaching the critical mach number, but not before.

There was a crash in South America of an older 737 where one of the two gyros had failed and was giving erroneous attitude information. In this case you are supposed to compare the two attitude indicators to the standby attitude indicator to figure out the bad one. Not sure why they failed to do this but the aircraft was flown out of control and disintegrated midair from a high speed dive. They found the airspeed indicator in the wreckage stuck at something like 505 knots.



I was actually thinking more bomb or missile to take it off like that picture.

How it acts after the entire ass end is gone depends a lot on the CofG and we have no idea how it was loaded, nor how much weight was lost off the back. Spin initially, yup, How it develops after (????) turns who knows.

IF it is even the same plane from a different angle.

IMSA GT MAR 22, 06:55 PM
Unfortunately the data recorder is probably in a million pieces so I don't know if we'll ever find out what happened.
82-T/A [At Work] MAR 23, 08:05 AM

quote
Originally posted by Hudini:

Now if an aircraft is accelerated enough the tail might detach AFTER reaching the critical mach number, but not before.



I didn't even think that was possible, but I suppose if going straight-down, you say speeds like that are in the realm of possibility?

In either case, at those speeds (or at least at the speed with which the plane impacted) would anyone on the plane be conscious at the end? I'm asking as uninformed... but guessing if the G-forces were so significant, hopefully at least most of the people in the plane were unconscious and not looking out the window as the plane shot like a rocket towards the earth. Would there need to be some sort of compression loss for people to be affected like that?

I know super-sonic planes are designed differently, but I'm trying to remember what I learned about Chuck Yeager's first experience with supersonic flight on that orange plane (XB-1 or something) was like?
rinselberg MAR 23, 11:18 AM
The cockpit voice recorder has been recovered. Battered, but maybe salvageable. They're still looking for the flight data recorder. That's the last I read, a few minutes ago.
williegoat MAR 23, 11:30 AM
It certainly was in the transonic range.

https://www.flightradar24.c...-route-to-guangzhou/



G-forces would not be great. It would be aerodynamic forces that could tear it apart.
MidEngineManiac MAR 23, 11:36 AM

quote
Originally posted by 82-T/A [At Work]:


I didn't even think that was possible, but I suppose if going straight-down, you say speeds like that are in the realm of possibility?

In either case, at those speeds (or at least at the speed with which the plane impacted) would anyone on the plane be conscious at the end? I'm asking as uninformed... but guessing if the G-forces were so significant, hopefully at least most of the people in the plane were unconscious and not looking out the window as the plane shot like a rocket towards the earth. Would there need to be some sort of compression loss for people to be affected like that?

I know super-sonic planes are designed differently, but I'm trying to remember what I learned about Chuck Yeager's first experience with supersonic flight on that orange plane (XB-1 or something) was like?



https://www.boldmethod.com/...ined-in-eight-steps/
82-T/A [At Work] MAR 23, 02:29 PM

quote
Originally posted by MidEngineManiac:

https://www.boldmethod.com/...ined-in-eight-steps/




That's definitely interesting, thanks for the link. I do wonder still whether the people were conscious about what was happening as they came towards earth quickly...
blackrams MAR 23, 03:41 PM

quote
Originally posted by 82-T/A [At Work]:
That's definitely interesting, thanks for the link. I do wonder still whether the people were conscious about what was happening as they came towards earth quickly...



If, (and that's a big if) cabin pressure was lost at 30k feet, and the aircraft was descending at near Mach 1, I doubt very many were conscious or aware of what was really happening. But, we don't know if or when anything happened, whether or not emergency oxygen was working, we don't know about the turbulence issue, we just don't know. Too much is unknown at this time as to what was happening in the cockpit to really know what was happening in the passenger area. What we do know is, there wasn't much time for anyone to suffer prior to their ultimate demise.

Rams

[This message has been edited by blackrams (edited 03-23-2022).]

82-T/A [At Work] MAR 23, 04:37 PM

quote
Originally posted by blackrams:

What we do know is, there wasn't much time for anyone to suffer prior to their ultimate demise.

Rams





I guess that's really what I was asking.

I was on a KLM 747 Series 100 back in the early to mid 1980s on a flight from Cairo to Skipol (Netherlands). The plane just "fell" ... for lack of a better explanation. We hadn't experienced any turbulence before then... but the plane was in a freefall for what felt like at least half a minute, if not more. Maybe it was less than that, but it felt like forever. Anyone who wasn't buckled in, flew up into the air. Many of the oxygen masks (sporadically, not all of them) dropped... maybe 1/8th or less of them on the plane from what I could see. When the plane finally "came to," everyone who was now in the air or plastered on the ceiling of the plane fell back down in a large crash, along with a couple of the luggage compartments. There was a lot of screaming, and a lot of crying.

I was buckled in, as was my dad's secretary who was flying with me (sigh... I know). I don't remember being "scared" so to speak, but I was shocked. I know how much it sucked, and I hate to think that the people in that plane experienced that for a prolonged amount of time. Almost like drowning... long and drawn out.
MidEngineManiac MAR 23, 04:55 PM
HEY !!!

Some of us called that feeling "fun" and tried it every chance we could (without breaking anything TOO badly)