greeny
Senior Member
Only a short time ago, our authorities made it possible to legally build and fly experimentals here. And gyrocopters are among the types of aircraft one might build. But up to this very moment, there is no one of them in the whole country. Trying to gather some information, I turn to the experts on this forum for help.
One of my questions is about noise: In certain threads, I found gyros referred to as "screamers". Which leads to the conclusion that they are far from quiet.
Obviously, when you use a two stroke, air cooled engine with high revs, this setup would produce more noise than a liquid cooled with reduction drive. And a four blade propeller is likely to be less noisy than a two blader.
Are there propellers which are less noisy than others?
Does the construction of the rotor influence the noise it makes?
Would a puller design be less noisy than a pusher?
Is it possible to quantify from what part how much noise is coming?
Thanks for sharing your wisdom.
Peter
www.berge.gl
One of my questions is about noise: In certain threads, I found gyros referred to as "screamers". Which leads to the conclusion that they are far from quiet.
Obviously, when you use a two stroke, air cooled engine with high revs, this setup would produce more noise than a liquid cooled with reduction drive. And a four blade propeller is likely to be less noisy than a two blader.
Are there propellers which are less noisy than others?
Does the construction of the rotor influence the noise it makes?
Would a puller design be less noisy than a pusher?
Is it possible to quantify from what part how much noise is coming?
Thanks for sharing your wisdom.
Peter
www.berge.gl