Alt-BEAM Archive
Message #10466
To: beam@sgiblab.sgi.com
From: Timothy Flytch flytch@hotmail.com
Date: Sat, 19 Feb 2000 01:46:44 -0500
Subject: Re: electric helicopters are getting close...
> Hay David,
> Ever fly a cricket??? know why you don't see many like them ??? they were
> just too stable... you could take you hands off for long periods of
e(
> like 20 to 30 seconds at a time! I've seen it personally!)... the down side
> is you can't make one fly inverted at two inches!!! so no one wanted a
> boring to fly model I guess...
> Timothy...
> >being a model helicopter pilot (who can manage to make it fly for a few
> >seconds than land again) of a kyosho methenol/oil/nitro powered beast ( i
> >have way too many hobbies), i have to say that they are incredible
> >difficult
> >to fly and are really expensive, even electric ones. For instance - the
>
> ______________________________________________________
>
10467 Sat, 19 Feb 2000 01:57:52 -0500 [alt-beam] Re: solarbotics pager mtr+fan "Jim Taylor" > I'll agree with Dave on this one. There are helos that do not
> have a tail rotor, they are called notars a.k.a. no tail rotors. They use
> channeled air from the motor through the tail of the helo and a adjustable
> port. By controlling the amount of air exiting through the tail section,
> they can turn or correct for the counter rotation.
Thats just doing the exact same thing as a tail rotor. The tail rotor
doesn't counteract any torque. It mearly sends air in a direction to
counteract the movements of the tial. These new Heli's with no tail rotor,
just channel exhaust from the engine.
TRUE rotary winged aircraft with no tail counteraction at all are possible
by means of using a HUGH vertical stab, and always flying forward. Or just
using counter rotating mainblades (stacked) as most gyrocopters use.
>Trying to counter the
> rotational force of a main rotor with another rotating in the same
> direction is a HUGE waste of energy. You would have tilt the prop
severely
> to get it to be effective.
> Just for fun..why do you think it is easier to have the blades
> mesh any better one way than the other...Makes no sense to me. Physics
> says this is nonsense
>
> later
> R
>
>
|___|
-------O()O-------
James Taylor
URL: http://fly.to/springmeadows
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