Variomatic Propeller

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sanman

Well-Known Member
Joined
Feb 24, 2021
Messages
266
Scout Aviation, who make paramotor hardware, have recently announced what they see as an innovative propeller design, which they refer to as a "Variomatic Propeller"








They claim it will improve efficiency and lower fuel consumption.

Is this design new and innovative, or has it been done before? Variable pitch propellers are nothing new, but this automatic spring-loaded mechanism for achieving/maintaining the variable pitch seems to be what's new.

Could this idea be useful for other small aircraft, beyond just paramotors? There are ultralights and Part 103 aircraft which also use small 2-stroke engines below 50hp, for example - could this be useful for them?
 

TFF

Well-Known Member
Joined
Apr 28, 2010
Messages
17,641
Location
Memphis, TN
They can use a spring because it’s small. Aeromatic props don’t use a spring but they pretty much are the same but use angle of the hub for blades to work against instead of a spring.
 
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