Also a big issue in turbines on hydro generators.
Foxy
----- Original Message -----
Cavitation is a phenomena associated with operating in fluids such as water.
When the local pressure drops low enough, the liquid changes state to gas -
it boils, with bad results with regard to noise, performance, and hydrofoil
longevity. Can't happen in air, air is already a gas. So, no, Cessna
drivers (and Cessna's designers) aren't interested in cavitation. Cavitation
is primarily of interest in high speed watercraft propeller (screw) design.
The big flap a dozen years ago over Toshiba's illegal sale of computer
controlled milling machines to the Soviet Union was based on the fact that
that technology allowed them to better build complex, non-cavitating (thus
quieter) submarine screws.
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