Airshow Crash Russia
Joined: Aug 2000
Posts: 3,670
Likes: 1
From: UK
Tail rotor failure - obviously. But why didn't he chop the throttles and try to stop the descent at the bottom? I don't think the rate of rotation was too disorientating? The 'G' not too great to prevent him reaching the ECU switches?
RiP.
RiP.
Joined: Aug 2000
Posts: 3,670
Likes: 1
From: UK
Tail rotor failure. Watch again.
He performs a turn in one direction and it is immediately cancelled out by a reverse turn at the same time the TR slows down.
That 'X' section TR most definitely has stopped functioning correctly - it is simply free-wheeling.
Tail rotor shaft / bearing failure.
The flicker effect with the helo in the foreground is constant, the failed TR in the doomed chopper is all over the place.
He performs a turn in one direction and it is immediately cancelled out by a reverse turn at the same time the TR slows down.
That 'X' section TR most definitely has stopped functioning correctly - it is simply free-wheeling.
Tail rotor shaft / bearing failure.
The flicker effect with the helo in the foreground is constant, the failed TR in the doomed chopper is all over the place.
Joined: Jun 2013
Posts: 181
Likes: 0
From: Thaïland
That is the "normal" procédures On the Alouette and Squirrel series when you lose the T/R control OR Power....( i don't know for other one)
Not easy to do if the T/R power loss
Much more easy if T/R control loss
Not easy to do if the T/R power loss
Much more easy if T/R control loss
Joined: May 2011
Aviation Qualifications: CPL
Posts: 299
Likes: 9
From: Australia
From ABC
The defence ministry said the accident was apparently caused by a hydraulic system failure, which was reported by the surviving pilot who ejected from the chopper.
(So there you go heli kiwi, ejected from the chopper)
Russian air force helicopter crashes at Dubrovichi air field, killing pilot - ABC News (Australian Broadcasting Corporation)
A Russian air force helicopter has crashed in front of thousands of spectators at an air show east of Moscow, killing one of the pilots, in the latest in a string of military crashes involving military aircraft.
The Mi-28N attack helicopter was participating in the show at Dubrovichi air field near the town of Ryazan, 200 kilometres east of Moscow.
The show was part of a competition organised by the Russian defence ministry.
"One pilot has died, the condition of the other is satisfactory," the ministry said in a statement.
The Russian air force proceeded to ground all Mi-28 flights after it was revealed the crash could have been caused by equipment failure.
The air show Aviadarts, where air force plane and helicopter crews compete to carry out timed tasks, was suspended for the day.
Television footage showed rescue workers attending to the smouldering helicopter lying on its side in the airfield after it crashed and burst into flames.
The defence ministry said the accident was apparently caused by a hydraulic system failure, which was reported by the surviving pilot who ejected from the chopper.
"According to the second pilot, the catastrophe happened due to aviation equipment failure," said commander of Russian air force Viktor Bondarev.
"I have stopped all flights on Mi-28 until an investigation is complete."
The Soviet-designed Mi-28 has been used by the Russian air force since the mid-2000s and is also exported to a number of countries including Iraq.
There have been at least six incidents over the past few weeks involving Russian military planes and helicopters.
The defence ministry said the accident was apparently caused by a hydraulic system failure, which was reported by the surviving pilot who ejected from the chopper.
(So there you go heli kiwi, ejected from the chopper)
Russian air force helicopter crashes at Dubrovichi air field, killing pilot - ABC News (Australian Broadcasting Corporation)
A Russian air force helicopter has crashed in front of thousands of spectators at an air show east of Moscow, killing one of the pilots, in the latest in a string of military crashes involving military aircraft.
The Mi-28N attack helicopter was participating in the show at Dubrovichi air field near the town of Ryazan, 200 kilometres east of Moscow.
The show was part of a competition organised by the Russian defence ministry.
"One pilot has died, the condition of the other is satisfactory," the ministry said in a statement.
The Russian air force proceeded to ground all Mi-28 flights after it was revealed the crash could have been caused by equipment failure.
The air show Aviadarts, where air force plane and helicopter crews compete to carry out timed tasks, was suspended for the day.
Television footage showed rescue workers attending to the smouldering helicopter lying on its side in the airfield after it crashed and burst into flames.
The defence ministry said the accident was apparently caused by a hydraulic system failure, which was reported by the surviving pilot who ejected from the chopper.
"According to the second pilot, the catastrophe happened due to aviation equipment failure," said commander of Russian air force Viktor Bondarev.
"I have stopped all flights on Mi-28 until an investigation is complete."
The Soviet-designed Mi-28 has been used by the Russian air force since the mid-2000s and is also exported to a number of countries including Iraq.
There have been at least six incidents over the past few weeks involving Russian military planes and helicopters.
Joined: Dec 2004
Posts: 49
Likes: 0
From: Germany
Looks like a VRS. Aircraft seems to be at zero speed on top of the climb with a high nose up attitude and probably low collective pitch. Then start to turn. I agree with Johni for the T/R , it's the video footage. Is the MI 28 single hydraulic boost system like the MI 24 ?
Joined: Apr 2008
Aviation Qualifications: Spotter
Posts: 611
Likes: 249
From: on the ground
Joined: May 2004
Posts: 917
Likes: 11
From: Tax-land.
The Mi-28 started spinning before it started descending, the initial snap yaw at the top of the climb with a high pitch attitude is caused by a TR failure.
A steady spin in the opposite direction as the main rotor is not related to VRS, but rather to a TR loss of thrust or loss of control.
Sad loss of life.
A steady spin in the opposite direction as the main rotor is not related to VRS, but rather to a TR loss of thrust or loss of control.
Sad loss of life.
Joined: Feb 2005
Posts: 673
Likes: 1
From: On the green bit near the blue wobbly stuff
Am I being thick here? The helicopter comes down yawing in the same direction as the rotor blades are spinning. If it was a TR thrust failure, then surely it would result in rapid yaw to the right? This appeared to happen, with initial right yaw but then something else happened to cause the left yaw in the descent.
The Mi-28 started spinning before it started descending, the initial snap yaw at the top of the climb with a high pitch attitude is caused by a TR failure.
A steady spin in the opposite direction as the main rotor is not related to VRS, but rather to a TR loss of thrust or loss of control.
Sad loss of life.
A steady spin in the opposite direction as the main rotor is not related to VRS, but rather to a TR loss of thrust or loss of control.
Sad loss of life.
Joined: Aug 2000
Posts: 3,670
Likes: 1
From: UK
Good spot RC but half way down, it reverses the direction of spin???
Maybe because of pilot input? The authorities are talking about hydraulic problems (input shaft servo)? Look at that TR on the way down.
What is debatable is why he didn't cushion the touchdown sufficiently.
If I recall correctly didn't the same happen to AG +1 in a Gaz piece @ Predannack local area at the top of a wing over?
As previously mentioned dumping the lever and nudging it fwd for speed should have helped enormously with the end result.
Maybe the revolutions were enough to disorientate the HP upsetting his decision point just above touchdown??
God knows how the other guy survived
Maybe because of pilot input? The authorities are talking about hydraulic problems (input shaft servo)? Look at that TR on the way down.
What is debatable is why he didn't cushion the touchdown sufficiently.
If I recall correctly didn't the same happen to AG +1 in a Gaz piece @ Predannack local area at the top of a wing over?
As previously mentioned dumping the lever and nudging it fwd for speed should have helped enormously with the end result.
Maybe the revolutions were enough to disorientate the HP upsetting his decision point just above touchdown??
God knows how the other guy survived