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LOW RPM-ROTOR STALL
From 1979-1994 the R22 helicopter was involved in 29
accidents resulting from failure to maintain rpm. Also 100 hard
landings were reported, 58 accidents from autorotations, and 42
hard landings under category "other". In some of these accidents
a low rpm situation might have been a contributing factor. The
rotorblades of the R22 have a maximum angle of attack of about
15 degrees. If that angle of attack is exceeded the rotor blades
stall, lift is cancelled, and the aircraft falls out of the sky.
June 4/08 -
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NEGATIVE G AND MAST BUMPING
All objects are subject to the gravitational
pull of the earth relative to their mass. This includes you and
me and it includes a helicopter.
As we are standing on the surface of
the
earth we will feel the weight of our body, which we can count as
1 G force or 1 positive G force. If we were able to conduct a manoeuvre that causes our apparent weight to increase we would
increase the G force felt, in effect increasing our weight at
that point in time. If we double our weight we double the G
force or experience 2 Gs and so on.
March 3/08 -
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Dangerous Helicopter
Principles of flight
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Dynamic Roll Over
When a helicopter is lifting off the ground (or a surface) or
is hovering with one skid or wheel on the ground, the helicopter
may begin a rolling motion, which under certain circumstances
cannot be controlled. This is known as Dynamic Roll-over. The
rollover can occur in either direction.
Feb 7/08 -
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LIGHT SPORT AVIATION IN THE NW
After three years, and lots of hoopla, many people wonder
how the Light Sport Movement is faring here in the
Northwest. As a flight school owner at Arlington Airport,
I would say that Light Sport has taken off, but has not yet
reached altitude.
March 3/08 -
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Interested in flying to
Mexico?
Find out how from Shoreline Flying Club - Feb
8/08
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Flight Training in
Spain
So you've considered learning to fly in the
UK and even America. Now
it's time to consider why you should look at doing your flight
training in Spain.
Feb 4/08 -
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More
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