Based on those experiences, Michigan Wheel Marine developed automated tools to design semicustom propellers quickly and inexpensively, as well as advanced CNC machining to produce those complex shapes ...

A few patents later, Sharrow had what he claims is the first major design change for propellers since the 1830s. [Image: Sharrow Marine] The new contra-rotating version.

The toroidal boat propeller pair installed. (Credit: rctestflight) As boring as propeller designs may seem to the average person, occasionally there’s a bit of a dust-up in the media about a ...

HydroComp PropCad is software for geometric modeling of marine propellers for design and manufacture that provides automatic preparation of 2D design drawings, 3D offsets, thickness classification ...

A New Option for Catamaran Workboats. In 2011, Teknicraft Design of New Zealand designed and engineered what is believed to be one of the first quad propeller propulsion systems for a catamaran ...

The toroidal propeller, one of the Lab's @RD100Awards winners, has a unique, closed-form propeller design that makes it a significantly quieter alternative to common multirotor propellers on ...

Vertical takeoff and landing (VTOL) advanced air mobility (AAM) aircraft generally use propellers, but these are often mistakenly called "rotors," creating confusion.

During flight tests, the sabotaged propeller broke apart during ascent, causing the drone to smash into the ground. More than 100 industries, including aerospace, automotive and defense, employ ...