Shear layer control in a free-vortex aerodynamic window

Details Shear layer control in a free-vortex aerodynamic window Shear layer control in a free-vortex aerodynamic window

1983-04-26

1985-12-17

Sikes, William L.

Coherent light generators

Particular resonant cavity

Specified cavity component

330 43, 350319, H01S 308

Patent

active

045596280

ABSTRACT:
A boundary-controlled aerodynamic window positioned adjacent the exit aperture of a gas laser is transparent to the laser beam emitted from the cavity of the laser. The boundary-controlled aerodynamic window is formed by a high velocity gas flow directed by a duct across the exit aperture for the laser beam isolating the low pressure region of the cavity from the high pressure of the atmosphere. The exit aperture is enlarged and an auxiliary gas flow injected along the sidewall of the duct adjacent the exit aperture to expand the thickness of the boundary layer. In a second embodiment, particulate matter is fixedly attached to the sidewall of the duct to increase the roughness of the wall surface. A third embodiment uses a plurality of nozzles, each injecting gas with a predetermined velocity.

REFERENCES:
patent: 3617928 (1971-11-01), Hausmann
patent: 3654569 (1972-04-01), Hausmann
patent: 3873939 (1975-03-01), Guile et al.
patent: 3973218 (1976-08-01), Kepler et al.
patent: 4152672 (1979-05-01), Hundstad
patent: 4207542 (1980-06-01), Shon

Affiliated with

Also associated with

Rating

Shear layer control in a free-vortex aerodynamic window does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Shear layer control in a free-vortex aerodynamic window, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Shear layer control in a free-vortex aerodynamic window will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2178129