I am an aspiring pilot and i came across this channel, it’s really helpful, everything is explained in such a simple way ; this channel is wayyyy too underrated , it deserves more subs
I can't imagine what it would be like to be a pilot in a plane that goes into a deep stall. It is unrecoverable so there is nothing you can do but sit and wait for the hit and hope you lived a good life as your life flashes in front of your eyes.
You have to quickly realize that there's no going back and leave a humorous recording on the CVR for the youtubers, after you say your goodbyes to family and friends of course. If there's time. Lol
Only “T” Tail aircraft are affected by the “Deep Stall” phenomenon. They have a device installed in the cockpit called a “Stick Pusher” which automatically forces the control column rapidly forward if the aircraft approaches the stall. This action forces the nose down, increasing airspeed, thus preventing a deep stall from developing. Once a “T” Tail aeroplane has entered a deep stall, recovery is totally impossible and a fatal crash will result. Hence the “Stick Pusher”. This is exactly what happened to the British European Airways (BEA) Trident (Papa India) disaster at Staines, near London Heathrow in 1972. It’s a very famous air disaster case and well worth a read, or watching a video about it on UA-cam!
@@pixelapse9613 basically, as angle of attack increases to the critical angle, the lift from the main wing is reduced and the turbulent air raises and covers the elevators, making them far less effective, which further contributes to the effect along with slow speed and sinkrate think static instability but only at critical angles of attack
Is it possible to say use differential thrust + aileron + rudder even with reduced effectiveness? I'd think that the only hope in this case would be to have a wing drop and make it a spin rather than a deep stall
Learnt a new concept under stalls..Thank you... What I never like is the fact how nonpaid pilots(they were unpaid for 6 months) were blamed for a dual engine failure and stall due to a lack of procedures in the airline to measure the weight of the bags appropriately! This MD-80 hence got into a super stall, and there were dangerous updrafts too unfortunately! No wonder this type of aircraft is discontinued!
This type of aircraft,like every other,has its pros and cons,but i can assure you that it is just as safe as the others if you control it as you're supposed to..
1. Required sick pusher. 2. You CAN recover from deep stall. 3. Appreciate that swept wing CL curve has a much less pronounced drop off when compared to straight wing, therefore aerodynamic incipent stall indications are more insidious.
In a deep stall, nothing that you mentioned definitively works towards lowering the angle of attack. Remeber the airplane already has a very high sink rate. Only a definitive nose down push can break the stall. Without the tail, this cannot be effectively accomplished.
is a death sentence unrecoverable? or is that a different term than I think it is? find it hard to believe SOME movement wouldn't let you recover in some way.
You can’t get into it in the first place. The T tail transport category airplanes require a mandatory ‘stick pusher’ that breaks the impending stall before it gets to full development.
You can’t get into it in the first place. The T tail transport category airplanes require a mandatory ‘stick pusher’ that breaks the impending stall before it gets to full development.
The horizontal stab can still have some authority. If the pilot can create enough up and down pitch oscillation by using a combination of thrust and elevator application, they may be able to force the tail out of the turbulent air and recover.
BEA may have had a deep stall but the actual cause of the stall was the retraction of the Droops 60 knots below the retraction speed causing an immediate stall that left the only possible way to recover was to extend the droops back to the extended takeoff position. Nothing else could have saved them.
2 minutes of video covered 10 pages in the book. Keep it up it’s absolutely stunning
Wow, thank you so much for such positive feedback! You've made my day.
I am an aspiring pilot and i came across this channel, it’s really helpful, everything is explained in such a simple way ; this channel is wayyyy too underrated , it deserves more subs
Welcome aboard! Thank you very much.
I can't imagine what it would be like to be a pilot in a plane that goes into a deep stall. It is unrecoverable so there is nothing you can do but sit and wait for the hit and hope you lived a good life as your life flashes in front of your eyes.
Its not that bad as you are saying here lol you can recover from it
That happened in Britain with I believe the BAC one-Eleven flight test program.
You have to quickly realize that there's no going back and leave a humorous recording on the CVR for the youtubers, after you say your goodbyes to family and friends of course. If there's time. Lol
Unimaginable feeling of fear
@@dr.julianbashir9193 for a guy with a DR. title, you sound super pessimistic.
What a fantastic channel and video!
Very well done, thanks for sharing.
Many thanks!
Good Video. Thank you!
thanks for sure save so much of my times my respect , for all you have done and your time you giving for all pilots students
I appreciate that!
Only “T” Tail aircraft are affected by the “Deep Stall” phenomenon. They have a device installed in the cockpit called a “Stick Pusher” which automatically forces the control column rapidly forward if the aircraft approaches the stall. This action forces the nose down, increasing airspeed, thus preventing a deep stall from developing. Once a “T” Tail aeroplane has entered a deep stall, recovery is totally impossible and a fatal crash will result. Hence the “Stick Pusher”. This is exactly what happened to the British European Airways (BEA) Trident (Papa India) disaster at Staines, near London Heathrow in 1972. It’s a very famous air disaster case and well worth a read, or watching a video about it on UA-cam!
But why T tail is only affected by deep stall? Please explain scientifically
@@pixelapse9613
basically, as angle of attack increases to the critical angle, the lift from the main wing is reduced and the turbulent air raises and covers the elevators, making them far less effective, which further contributes to the effect along with slow speed and sinkrate
think static instability but only at critical angles of attack
Great video as usual.
I appreciate that
Is it possible to say use differential thrust + aileron + rudder even with reduced effectiveness? I'd think that the only hope in this case would be to have a wing drop and make it a spin rather than a deep stall
Amazing explanation.....
Glad you liked it. Thank you!
Question, would decreasing throttle not drop the nose? Or could increasing throttle help?
Amazing !
Thank you! Cheers!
Learnt a new concept under stalls..Thank you...
What I never like is the fact how nonpaid pilots(they were unpaid for 6 months) were blamed for a dual engine failure and stall due to a lack of procedures in the airline to measure the weight of the bags appropriately! This MD-80 hence got into a super stall, and there were dangerous updrafts too unfortunately!
No wonder this type of aircraft is discontinued!
This type of aircraft,like every other,has its pros and cons,but i can assure you that it is just as safe as the others if you control it as you're supposed to..
For glider pilots, it is so incredibly important that the plane is loaded slightly nose heavy, or else stall recovery is close to impossible.
Very interesting! Thanks - subbed!
Thanks for the sub!
I'm a little confused. Are these aircraft not nose heavy to help recover from stalls?
Youre the best
Thanks a lot, explained very well. But i recommend speeding video a bit.
1. Required sick pusher.
2. You CAN recover from deep stall.
3. Appreciate that swept wing CL curve has a much less pronounced drop off when compared to straight wing, therefore aerodynamic incipent stall indications are more insidious.
Hence the invention of the ‘stick pusher’ on all transport category T tail airplanes.
Only British T tails.
Some people have suggested unequal thtust, in a multi-engined aircaft, in order to get out of a Deep Stall, but it's not a guarantee of survival...
Keep giving knowlegde to us...
Love from India❤✨
extend flaps and slats
You can use thrust , aerons and rudder to get out of it, if the flight computer doesn't block your inputs.
on any airbus you can turn off the two elacs and two facs to get into direct law, with absolutely no protections blocked inputs or modified inputs
In a deep stall, nothing that you mentioned definitively works towards lowering the angle of attack. Remeber the airplane already has a very high sink rate. Only a definitive nose down push can break the stall. Without the tail, this cannot be effectively accomplished.
Nope!
Two Deep Stall T Tail crashes: NWA6231 B727 JFK-BUF 01DEC1974, West Caribbean MD80 15AUG2005.
Isn't this what happened to the Air France 447 flight from Brazil to Paris??
Not exactly. That airplane was in a pilot induced stall yes but it was recoverable. The pilot just made no attempt to correctly recover.
I’m not even a pilot i just find airplanes interesting
is a death sentence unrecoverable? or is that a different term than I think it is? find it hard to believe SOME movement wouldn't let you recover in some way.
You can’t get into it in the first place. The T tail transport category airplanes require a mandatory ‘stick pusher’ that breaks the impending stall before it gets to full development.
Only in the UK do T Tail airplanes have a stick pusher.
I came here from emergecny landing event
u can't recover the plane? like nada it's over? bruh like nothing on the tail could save u realign???? wow u learn something new everyday
sooo .. how you supposed to recover from it?
You can’t get into it in the first place. The T tail transport category airplanes require a mandatory ‘stick pusher’ that breaks the impending stall before it gets to full development.
The horizontal stab can still have some authority. If the pilot can create enough up and down pitch oscillation by using a combination of thrust and elevator application, they may be able to force the tail out of the turbulent air and recover.
nose down power on
You can’t ’nose down’ if your tail is in the stall wake. It has no authority.
say your prayers, and then booooooom - charred toast
Reasons why im scared to become a pilot
This what happened to Air France 447
No it isn't. The F/O held that airplane in a stall with backstick.
BE 548 ?
BEA may have had a deep stall but the actual cause of the stall was the retraction of the Droops 60 knots below the retraction speed causing an immediate stall that left the only possible way to recover was to extend the droops back to the extended takeoff position. Nothing else could have saved them.
did anyone else see it 1:32