Question for the helicopter fans???
Many thanks...
Alf
"alf blume" wrote in message
. ..
"Andrew-S" I-Still-Hate-Spammers@Sorry-I had-to-leave-for-bit.com skrev
i en meddelelse ...
The other day one of the police departments that I work with mentioned
that
another PD aviation section had an "overspin" on their helicopter.. I
was
going to ask at the time what an overspin was but I forgot... So my
question is what exactly is an overspin??? I checked the web and the
answers I found where not exactly enlightening...
I'll venture a guess:
The rotor presumably has a maximum rpm. It is possible to overspin the
rotor if you decend very rapidly . .
A Police-helicopter can do that when they decend to check occupants in
cars they are persuing - or if they have an engine failure, in which case
you spin-up the rotor during the decend to make sure you have lift enough
for the landing.
It's called "autorotation" - I've tried it as a passenger in a Hughes
OH-6 during a training flight, pretty scary.
Regards Alf
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