|Arc-bladed Props –
Introduced at show by Maynard-di Cesare
First introduced at the New York National Aviation
Show, four aircraft propellers bearing Department of
Commerce Certificates are now offered to the industry
by the Maynard-di Cesare
Propeller Corporation, Milwaukee.
The blades of all of these propellers feature a decided
arc, and three of the four types – the automatic,
the constant speed, and the adjustable pitch – have
the blades offset at the hub. The fourth propeller,
known as the turbine type, has its blades set in the
customary manner but is otherwise unconventional.
It is claimed that the unique arc of the blades acts
to bring the point of fatigue four inches closer to
the hub, and that the offset blade arrangement provides
better balance and reduces propeller vibration transmitted
to the engine. Improved engine cooling is also claimed
as a feature of the design. A further claim is that
these propellers are considerably lighter in weight
than present types.
All of these propellers have been developed under
the direction of Lieut. Pierino di Cesare.
Aviation magazine, March, 1937, p 45.