Helicopter Tow Job

A new twist on the dynamic roll-over.

Category:

Autos & Vehicles

Tags:

• Helicopter
• accident
• crash
• bell
• 206
• boat

[Obelix6]

CruzinChris you should stick to cruzin and stay away from flying because this absolutely is dynamic rollover. edcoondog is absolutely right ....it's not a textbook case of DR but it is nonetheless DR. Dynamic Rollover can happen at any stage of flight if there is lateral movement and some part of the helicopter located below the helicopter's CG is stopped from moving (in this case the sling hook). It's the rotor's actual thrust that pulls the helicopter further into the roll.

[pyrite1978]

Dont ya love how everyone on youtube is some how an expert on practically everything they see?

[edcoondog]

wow, another person who only accepts a textbook answer. obviously you know the book answer on the subject of dynamic rollover and know nothing about the actual physics behind it. you're right, this is not textbook D.R. but the physics involved is almost identical. what's involved is a rolling moment about an point other than the cg point. on the ground the pivot would be a skid, in a hover it can occur if one were to contact a runway light or shrubbery. here it's at an extreme length. the rope.

[CruzinChris]

"the pivot point is the boat"?!?!? Stick to being a mechanic chief! Dynamic rollover is not an IN FLIGHT event. It requires contact with the ground or building. The aircraft ran out of maneuvering airspace that close to the water when the load jerked it to the side abruptly.

In flight (or hover) there is no angular momentum (pivot point -- rolling motion). Only when a helicopter is in touch with a landing surface is this possible. You obviously haven't flown sling ops or slope landing.

[bozs13]

man the pilot or crew isn't too smart

and that laugh track is not appropriate

[edcoondog]

this IS dynamic rollover. the pivot point is the boat. the drag of the boat pulled the helicopter into an angle that was unrecoverable and it drove itself into the water. an expensive mistake.

[CruzinChris]

That's not dynamic rollover - which requires a pivot point, rolling motion and exceding the critical angle of mast to rotor. This was a "sling load" mishap with off center load and too much power applied too quickly. I'm discusted by the laugh track on this clip when the helicopter crashes into the water. This crew was trying to help the "IDIOTS" in the boat who ran out of fuel!!

[camorton]

Doesn't matter what part of the skid you attach to, you'd get the same result. Any load must be attached to a point near the ceter of lift otherwise it can result in a problem called 'dynamic rollover'. The pilot should have been aware of this issue.

[camorton]

Doesn't matter what part of the skid you attach to, you'd get the same result. Any load must be attached to a point near the ceter of lift otherwise it can result in a problem called 'dynamic rollover'. The pilot should have been aware of this issue.

[camorton]

Doesn't matter what part of the skid you attach to, you'd get the same result. Any load must be attached to a point near the ceter of lift otherwise it can result in a problem called 'dynamic rollover'. The pilot should have been aware of this issue.