diamond
Posts: 3000
Joined: Sun Apr 11, 2004 8:01 am

Russian Helicopter Crashes In Water (Video)

Fri May 12, 2006 3:57 am

Pilot killed during training exercise. At first it looks like a simple hard landing, but it gets worse.

mms://wmscnn.stream.aol.com/cnn/worl...sh.reut.ws.wmv#0;1.000;0;0;1:2;2:2
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MigFan
Posts: 710
Joined: Sun Jan 29, 2006 12:50 am

RE: Russian Helicopter Crashes In Water (Video)

Fri May 12, 2006 5:00 am

Sure that link is valid???
UH-60's suck!!!
 
diamond
Posts: 3000
Joined: Sun Apr 11, 2004 8:01 am

RE: Russian Helicopter Crashes In Water (Video)

Fri May 12, 2006 5:29 am

It was working for me up until a few minutes ago.

This link will work for certain:

http://www.cnn.com/video/player/play.../05/11/vo.russia.copter.crash.reut
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WrenchBender
Posts: 1662
Joined: Wed Feb 04, 2004 5:59 am

RE: Russian Helicopter Crashes In Water (Video)

Fri May 12, 2006 7:52 am

Too much Fwd pitch on the rotor without enough Collective.
He was attempting a taxiing/leapfrog takeoff, usually a safe way of taking off from water. Canadian pilots train for this annually.


WrenchBender
Silly Pilot, Tricks are for kids.......
 
DfwRevolution
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RE: Russian Helicopter Crashes In Water (Video)

Fri May 12, 2006 12:14 pm

This is an excellent video for demonstrating the torque forces of rotor-driven aircraft. Notice how the tail fractures with seemingly no outside force or contact with the water.
 
PADSpot
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RE: Russian Helicopter Crashes In Water (Video)

Fri May 12, 2006 5:18 pm

Quoting DfwRevolution (Reply 4):
This is an excellent video for demonstrating the torque forces of rotor-driven aircraft. Notice how the tail fractures with seemingly no outside force or contact with the water.

Sorry, but a video in which somebody dies or gets hurt seriously can't be "excellent" in any regard ...
 
TedTAce
Posts: 9098
Joined: Sun Mar 27, 2005 12:31 am

RE: Russian Helicopter Crashes In Water (Video)

Fri May 12, 2006 5:25 pm

Quoting PADSpot (Reply 5):
Sorry, but a video in which somebody dies or gets hurt seriously can't be "excellent" in any regard ...

I disagree. While it's not pleasant to consider the expense of the life lost in the video, the ultimate question is how many lives might be saved as a result of this video taped death?

No deaths in this incident would tell me as a profesional in training that while the aircraft is lost, there is no personal cost to ignoring the lesson. (It would be just another moron who STP'd; who cares?)

Knowing that someone died as a result of the actions protrayed is sobering and makes for a lesson that obviously should be heeded. Allowing one's self to make the same mistake after witnessing such a video and being aware of the consequences should be something that doesn't happen.
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kc135topboom
Posts: 11007
Joined: Sun Jan 30, 2005 2:26 am

RE: Russian Helicopter Crashes In Water (Video)

Fri May 12, 2006 7:49 pm

Quoting WrenchBender (Reply 3):
Too much Fwd pitch on the rotor without enough Collective.

I don't think so, looks like the foreward portion of the cabin flooded with water. That much weight could have caused the nose heavy condition.

My heart goes out to all those injured, and to the family of the pilot.
 
MigFan
Posts: 710
Joined: Sun Jan 29, 2006 12:50 am

RE: Russian Helicopter Crashes In Water (Video)

Fri May 12, 2006 8:28 pm

DId the crew die? I did hear anything like that in the video. For optimism's sake they could have made it out...

Good luck to them either way

/M
UH-60's suck!!!
 
egronenthal
Posts: 51
Joined: Tue Apr 19, 2005 4:49 am

RE: Russian Helicopter Crashes In Water (Video)

Sat May 13, 2006 12:58 am

[quote=DfwRevolution,reply=4]

Quote:
This is an excellent video for demonstrating the torque forces of rotor-driven aircraft. Notice how the tail fractures with seemingly no outside force or contact with the water.

The tail rotor drive shaft failed because it is mechanically geared to the main rotor through the transmission gearbox. This is common practice in helicopters to provide some tail rotor drive from the main rotor, and thus directional control, even when the engines have died. Hopefully the pilot can enter autorotation after engine failure, where the main rotor is driven by aerodynamic forces. The tail rotor will then be driven off the main rotor, and provide enough directional control to land relatively softly.

In this crash, when the main rotor instantaneously slowed greatly or even stopped rotating, due to contact of the main rotor blade tips with the water, the tail rotor continued to turn because of its own rotational inertia. The tail rotor drive shaft was then faced with zero or near-zero rotation at one end (the main rotor transmission) and near-normal rotation at the other (tail rotor) end. The overloaded drive shaft simply shattered under the load, as spectacularly shown in the crash video.

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