Abstract: This paper presents a noise and vibration analysis of a contra-rotating propeller (CRP) underwater electric propulsion system integrated with a permanent magnet synchronous motor (PMSM) and ...

Abstract: A contra-rotating propeller (CRP) offers higher propulsion efficiency compared to a single propeller. This article presents a novel underwater CRP propulsion system that integrates a ...

The Max Planck Institute for Solar System Research (MPS) in Göttingen is one of the world's leading research institutions in the field of solar physics and planetary research with around 300 employees ...

The Convair XFY-1 Pogo was a Navy VTOL interceptor built to launch and land vertically from tiny ship decks. It used a cruciform wing and tail layout, a rotating pilot seat, and a powerful turboprop ...

Alfredo has a PhD in Astrophysics and a Master's in Quantum Fields and Fundamental Forces from Imperial College London. Alfredo has a PhD in Astrophysics and a Master's in Quantum Fields and ...