At the very crux of engineering is the desire to problem-solve, optimize, and squeeze out every bit of efficiency possible from the system being built. Aircraft design and aeronautical engineering ...

Sharrow's extraordinary looped propellers were already some 30% more efficient than traditional designs – and now the company has put two of them together into a coaxial, contra-rotating prop that ...

Abstract: In order to study the properties of radiation noise of single-propeller and contra-rotating propellers, the numerical simulation and computing was accomplished by using RNG turbulence model, ...

A new contra-rotating propeller (CRP) system incorporating an electric pod in the rudder structure has been developed by the Japanese companies Miho Shipyard and Niigata Power Syst... A new ...