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Russian Helicopter Crashes In Water (Video)  
User currently offlineDiamond From United States of America, joined Apr 2004, 3279 posts, RR: 63
Posted (8 years 7 months 2 weeks 7 hours ago) and read 8960 times:

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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9 replies: All unread, jump to last
 
User currently offlineMigFan From , joined Dec 1969, posts, RR:
Reply 1, posted (8 years 7 months 2 weeks 6 hours ago) and read 8942 times:

Sure that link is valid???

User currently offlineDiamond From United States of America, joined Apr 2004, 3279 posts, RR: 63
Reply 2, posted (8 years 7 months 2 weeks 6 hours ago) and read 8934 times:

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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User currently offlineWrenchBender From Canada, joined Feb 2004, 1779 posts, RR: 8
Reply 3, posted (8 years 7 months 2 weeks 4 hours ago) and read 8875 times:

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.......
User currently offlineDfwRevolution From United States of America, joined Jan 2010, 1001 posts, RR: 51
Reply 4, posted (8 years 7 months 1 week 6 days 23 hours ago) and read 8813 times:

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.

User currently offlinePADSpot From Germany, joined Jan 2005, 1676 posts, RR: 4
Reply 5, posted (8 years 7 months 1 week 6 days 18 hours ago) and read 8771 times:

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 ...


User currently offlineTedTAce From , joined Dec 1969, posts, RR:
Reply 6, posted (8 years 7 months 1 week 6 days 18 hours ago) and read 8767 times:

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.


User currently offlineKC135TopBoom From United States of America, joined Jan 2005, 12181 posts, RR: 51
Reply 7, posted (8 years 7 months 1 week 6 days 16 hours ago) and read 8732 times:

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.


User currently offlineMigFan From , joined Dec 1969, posts, RR:
Reply 8, posted (8 years 7 months 1 week 6 days 15 hours ago) and read 8721 times:

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


User currently offlineEgronenthal From United States of America, joined Apr 2005, 54 posts, RR: 0
Reply 9, posted (8 years 7 months 1 week 6 days 10 hours ago) and read 8638 times:

[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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