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#11
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John wrote:
"Rhodesst" wrote in message ... According to the article they only had a 25° nose down attitude. It looks alot worse than that in the picture. Since most helicopters of this size typically lift twice there own weight (when empty). I would estimate that the maximum theoretical nose down angle whould be 60°. This gives you a thrust vector component of twice youre vertical component. However the transmission lube systems would not like this at all. John Roncallo As long as you can maintain a vertical component of lift equal to the weight of the helicopter, you'll be Ok. Either way, that looks like one hell of a balancing act. I don't know for sure but that looks like it might not be too much different from a simple (huh?) hover with a heavy sling load as far as control imputs are concerned. Of course, I'm probably wrong about that. It's never that easy, if hovering is considered easy. :-) Fly Safe, Steve R. Ok i have read all the posts up to 23rd dec on this thread, i understand it's some sort of an illusion. I know next to nothing about sling operations. I'm just surprised that no one seemed to think about the principles of dynamic roll over and try to apply them here ? I know the sling load probably isn't stuck to the ground ..but could become stuck, then there is inertia and acceleration considerations, i have only a fuzzy understanding of all this ...but i think that the maximum nose down angle when towing would be a lot less than anyones gut feeling or quick calculation based only on thrust to weight ratios and thrust vectors. Do i have a point ? I'm sure someone will elaborate on this? There is no potential for DR. Because of the sling load is still within the correct CG envelope. JR |
#12
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Can somebody post the link to the helicopter photo again please?
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#13
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Isn't this a Columbia Helicotpers Picture? It's in their colors - and
nope, it didn't crash. Bob |
#14
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"Bob" wrote in message ...
Can somebody post the link to the helicopter photo again please? Actually, you can find it here : http://www.colheli.com/colheli.html That's Columbia Helicopter's website. You'll see pictures of this and others in their operations in the Photo Gallery! Best Regards! Bob |
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