| From: | Gurth <gurth@******.NL> |
|---|---|
| Subject: | Re: LAVs and something amusing..... |
| Date: | Mon, 7 Apr 1997 11:15:25 +0100 |
> Agreed in principle, but note that helicopters ARE flying bricks.
> According to normal physics, they shouldn't work. AFAIK physicists
> around the world still haven't developed a solid theory as to why they
> get off the ground. Lots of hypothesese (sp?) but no-one's managed to
> prove anything.
I thought it wasn't all that difficult... The wings (rotorblades) turn
and provide lift, thereby pulling the helicopter up into the air. The
fuselage will want to turn the other way (reaction = -action) so a tail
rotor, a second main rotor, or a NOTAR exhaust system is added to counter
that tendency.
When the cyclic is pressed forward, the vector of the upward force changes
and the helicopter loses a bit of lift buts gain forward speed. The
rotorblades turn along their longitudinal axis (higher angle = more lift)
to compensate for the difference in airspeed over them that now exists,
keeping lift evenly balanced on all sides of the rotor disc.
--
Gurth@******.nl - http://www.xs4all.nl/~gurth/index.html
In my mind all the time.
-> NERPS Project Leader & Unofficial Shadowrun Guru <-
-> The Plastic Warriors Page: http://www.xs4all.nl/~gurth/plastic.html <-
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