In this paper, we report experimental investigation to improve the shape of a supersonic nozzle for rarefied flows high axial density at extended distances from nozzle. The reported work is significant molecular jet/beam applications that require center-line and narrow jet profile. We investigate parabolic whose profile generated using virtual source model free expansion compare its performance...

Turbojet engines have a slow response and require mechanical assistance to perform vertical take-offs landings. In this paper, we propose take-off landing (VTOL) aircraft that contains one-dimensional thrust vectoring nozzle modules solve the problem of dependence on turbojet. The turbojet engine is placed horizontally in module, rotational speeds are fixed, force along axis remains constant as...

Abstract ross flow turbines are widely used as for driving micro-scale hydropower plants in rural areas, but their efficiency is still low because cross only use one nozzle. The utilization of the potential energy water not optimal yet to be converted into pressure and kinetic nozzles with high velocity hitting turbine blades. problem nozzle has an uneven blades, it effective converting power t...