This research has been carried out to determine the marine propeller hydro-acoustic characteristics by Reynolds-Averaged Navier-Stokes (RANS) solver in both uniform and non-uniform wake flow at different operating conditions Wake flow can cause changes in pressure fluctuation and gas effect on propeller noise spectrum. Noise is generated by the induced trailing vortex wake and induced pressure ...

Abstract Research on propeller performance has been reinvigorated by the development of new classes vehicles, ranging from electrically powered fixed-wing aircraft, to multi-rotor electrical Vertical Take-off/Landing (eVTOL) vehicles and tilt-rotor aircraft. These types aircraft utilise a range modern propellers, often with more advanced planforms features such as anhedral, operate in flight en...

The factorization property of graviton scattering amplitudes is reviewed and shown to be valid only if the “natural” value of the gyromagnetic ratio gS = 2 is employed—independent of spin.

The factorization property of graviton scattering amplitudes is reviewed and shown to be valid only if the “natural” value of the gyromagnetic ratio gS = 2 is employed—independent of spin.

Abstract In this practical approach to distributed propulsion, the solar-powered manned motorglider icaré 2 has been used as a testbed for wingtip propulsion. The large wingspan and slow cruising speed of are highly suitable assess influence potential propellers at wingtips yaw control. paper describes work multidisciplinary team consisting researchers, engineers, pilots students, starting from...

This study aimed to explore the directional stability issues of a previously studied light box-wing aircraft model with pusher propeller engine in fuselage aft section. Earlier configurations have included use together lifting system consisting two wings joined at their wingtips vertical stabilizers. However, these side surfaces failed provide sufficient stability, thus prompting quest this for...