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ZL1UIC > INFO 27.07.02 18:30l 51 Lines 1603 Bytes #999 (0) @ WW
BID : D90152ZL1UIC
Read: DB0FHN GUEST
Subj: RE - Rotor blades
Path: DB0FHN<DB0ZWI<DB0CHZ<OK0PKL<OK0PPL<RZ6HXA<SP7MGD<WB0TAX<HA3PG<ZL2TZE<
ZL2TZE<ZL2WA<ZL1UX
Sent: 020727/0232Z @:ZL1UX.#20.NZL.OC #:37757 [Hamilton] FBB7.00i $:D90152ZL1UI
From: ZL1UIC@ZL1UX.#20.NZL.OC
To : INFO@WW
> From: VK5ZKL@VK5SPG.#ADL.#SA.AUS.OC
> To : INFO@WW
>
>
> Hello Ian
>
> The rotor blades of a helicopter are simular to wings and provide
> lift, they are refered to as rotory wing craft.
>
> Gimbles near the blade allow the rotary wing to be tilted thus
> allowing directional movement, the tail rotor stops counter rotation of
> the body.
>
> I have a picture of the support helicopter for the rouletes taken
> during last clipsal 500 race, the helicopter was over a metre above the
> ground when i photographed it using 400 ASA film and a shutter speed of
> 1000th of a second, the rotor blades are perfectly still and also the
> tail rotor.
>
> The main rotor shows a perfect air foil
Correct. They are rotary winged aircraft, and have gimbals.
in actual fact most have collective pitch, that can be adjusted more or
less, depending on the rate of climb required. Cyclic gives the direction
of travel (forward/backward/left/right) and tail rotor thrust(doing the
same as the rotor, but in a horizontal plane) controls the direction the
nose points, as well as balancing out the torque reaction from the main
rotor as one of Isaac Newton's laws states, "each action has an opposite
and equal reaction"
Sounds like it is a great picture, why not scan it & 7+ it to AIRPIC@WW
for the airheads (like me) to see.
Cheers/73,
Allen, ZL1UIC @ ZL1UX.#20.NZL.OC
QTH Cambridge, New Zealand
E-mail: allengilbert@clear.net.nz
Message timed: 14:21 on 2002-Jul-27
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