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Unless you have an inverted oil system, I would keep at least 0.1 g on the airplane.
Among other things, you might lose some hydraulic fluid out the vent on the pump and on the master cylinders. But of more concern than that small mess would the metal-on-metal inside your engine, or potentially an engine overspeed caused when oil starvation to the prop governor allows it to do unpredictable things.
I'm fortunate to have gotten most of my aerobatic urges worked out in the Air Farce, but if you really want to do serious acro I recommend you trade hours with a friend who owns an airplane designed for negative g flight.
Cheers,
Bill Reister
Keith Smith wrote:
I'm thinking of doing some relatively basic aerobatics in my 360,
basically loops, barrel rolls, and anything else with continuous
positive G.
The area where I'm a little hazy is any maneuver with brief moments of
zero or even -1G. Are these to be COMPLETELY avoided, or is it ok for
very brief stints. I'm concerned about the prop and engine. My
knowledge of the internals of the engine are weak, but from the little
I know, without an inverted oil system, prolonged inverted flight
isn't an option. My question is, is 0 to -1G acceptable for 1-2
seconds? I'm thinking here of aileron rolls, or cuban eights.
I don't have my heart set on doing those, per se, but just want to
know where it would be smart to draw the line. I know the airframe can
handle all of that, and then some, it's a question of the engine and
prop.
Thanks for any advice.
Keith
N360JH LNC2
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