Rescue Line "Pendulum" Effect
I have touched down with the;
United States Special Operations Command
and have sent query regarding the, "Pendulum", Effect.
Also have feelers out in the directory of the, U.S. Army,
PROGRAM EXECUTIVE OFFICE FOR ROTARY WING
and will direct query there.
A Communication From a Chopper Pilot on the subject;
REPLY;
Whenever a helicopter pilot has an external load that starts to swing
(Human or non-human cargo), he will begin to slowly turn and the swinging will cease.
Initiating a shallow turn will remedy the pendulum effect by decreasing
the ability for the load to swing by using centrifigul force. Even at a
slow forward speed with a shallow turn to one direction, it will create a
G Force on the weight, increasing the relative weight on the end of the rope and diminishing the swing.
Simple problem, simple fix.
Glenn
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REPLY;
Thanks Glenn,
If you say so, however it looked pretty hectic in the flash flood
conditions in the scenario viewed in the Nevada incident I watched on TV some time ago. I'm not sure that pilots always have the time and room, for example, cliffs,bridges, high tension wires, etc.
I will make a note of G forces technique for further technical reference.
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REPLY
There are exceptions to everything. At a hover, in a confined space, you
do not have many options. That is just the way of things. Sometimes, no
matter what you try to do, it is just not your day.
Glenn
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The thing is the space and time that a pilot has to make a correction to stabilize the swing situation, as stated above with real danger lurking in close quarters there will be times that the margin will be slim.
Giving a pilot all the technical applications to solve his problem may take years of development, but the mile is accomplished by taking the first step.
When seeing this on the documentary videos via the TV, I can see that this a solution is necessary to provide a more precise control in the situation.
If and when I find a slot for an R&D Proposal submission,
I will be looking to acquire some partnership key assets, for participation.
Please let me know if you are interested, I'll keep your contact information on hand as I organize this.
Last edited by Jove; 16th Aug 2009 at 11:29.
Reason: Sentence word structure