What prevents thrust reversal in mid-flight?
05-15-2014, 04:34 AM
#11
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Originally Posted by badflaps
The DC-8 used reverse in flight. During upgrade training of an 8 F/O to 727 C [emergency descent exercise] Trainee put 1and3 in reverse. Went home on one engine. Seat cushions replaced.
05-15-2014, 08:35 AM
#12
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There was a guy at simuflite that put the reversers out on a challenger. He said and i quote "look what i learned at simuflite." They were using the TR deployment in the sim to simulate something on the g2. The one thing he did right was put the gear down. They both lived.
05-15-2014, 08:54 AM
#13
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Originally Posted by ClarenceOver
They were using the TR deployment in the sim to simulate something on the g2.
05-15-2014, 09:55 AM
#14
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Originally Posted by JamesAA
Wow! Seems scary. If they were (both) to deploy, if just momentarily, while in flight, would that spell disaster, or not necessarily?
05-15-2014, 11:23 AM
#15
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"What prevents T/R deployment in flight?"
In many turbojet aircraft there are:
-air/ground sensing "PSEU" (weight on wheels + wheel speed sensors+ radar altimeter input)
- mechanical latches that prevent deployment while airborne
- positive hydraulic pressure on the Stow side while airborne
In many turbojet aircraft there are:
-air/ground sensing "PSEU" (weight on wheels + wheel speed sensors+ radar altimeter input)
- mechanical latches that prevent deployment while airborne
- positive hydraulic pressure on the Stow side while airborne
05-15-2014, 11:42 AM
#16
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Originally Posted by ClarenceOver
Is there a real difference safety wise between emergency stow or idle thrust commanded? Which one does the 727 have? Just one of them deployed James and it ripped the airplane apart. Not sure it would make a difference if both deployed?
The checklist for recovering from an intentional deployment goes through a few steps to try to stow the reverser and if it won't stow you shut it down.
05-19-2014, 09:57 AM
#17
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Originally Posted by badflaps
The DC-8 used reverse in flight. During upgrade training of an 8 F/O to 727 C [emergency descent exercise] Trainee put 1and3 in reverse. Went home on one engine. Seat cushions replaced.
Was it ACTUAL reverse thrust? Or simply deplyment of the system with the engines at idle like the Russian jets do in the flare?
05-19-2014, 04:28 PM
#18
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Originally Posted by John Carr
Was it ACTUAL reverse thrust? Or simply deplyment of the system with the engines at idle like the Russian jets do in the flare?
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