Accession Number : ADD006948

Title :   Self Compressing Supersonic Flow Device.

Descriptive Note : Patent Application,

Corporate Author : DEPARTMENT OF THE NAVY WASHINGTON DC

Personal Author(s) : Bush,John E ; Fenneman,David B ; Smith,Ronald E

Report Date : 01 Nov 1979

Pagination or Media Count : 34

Abstract : A supersonic flow device is obtained by using a working fluid which is driven by any adequate means at a predetermined flow rate along a predetermined path. In this flow path, a nozzle array is placed which is designed to converge the flow upon itself, causing supersonic flow. The flow path then follows on its own accord a converging diverging configuration, which is effectively the shape that the flow would be contained by if a second nozzle or diffuser were present. This type of converging diverging flow can be obtained by using a plurality of properly contoured nozzle blades comprising a subsonic throat with a supersonic portion. These back to back subsonic and supersonic sections provide the necessary increase in fluid velocity as the fluid passes through the nozzle, and the proper exit velocity magnitude and direction. In a gas laser, the lasing medium will undergo a lasing region at supersonic speeds shortly after exit from the nozzle. downstream from the lasing region the oblique and normal shock wave boundaries will occur providing uninterrupted continuous existence of a lasing region. By an appropriate laser mirror system, the coherent radiation that is emitted can be extracted from the shock-free region.

Descriptors :   *Patent applications, *Supersonic flow, *Self operation, *Fluid flow, Fluid control, Gas lasers, Wind tunnels, Propulsion systems, Gases, Patterns, Supersonic nozzles, Diffusers, Inventions, Nozzle throats

Subject Categories : Fluid Mechanics

Distribution Statement : APPROVED FOR PUBLIC RELEASE