Multiple shock aerodynamic window

Details Multiple shock aerodynamic window Multiple shock aerodynamic window

1978-04-20

1980-06-10

Davie, James W.

Oscillators

Molecular or particle resonant type

331 945C, 350319, H01S 300

Patent

active

042075424

ABSTRACT:
A multiple shock aerodynamic window for use within a laser system. The aerodynamic window provides separation between the pressure within the laser cavity and the ambient pressure adjacent thereto. Making up the aerodynamic window is an entrance duct and a capture duct situated transverse to a laser beam output passageway leading from the laser cavity. A wedge-shaped element is located in the entrance duct, partially protruding into the passageway. A diffuser vane is located in the capture duct. Upon the passing of a supersonic flow of gas through the entrance duct at least two shock waves are generated at the wedge-shaped element and cross the passageway.The diffuser vane intersects at least one of the shock waves thereby substantially reducing flow separation in the capture duct. In addition, the entrance wall of the capture duct may be inclined at an angle of approximately 16.degree. in order to assist the diffuser vane in the reduction of flow separation in the capture duct.

REFERENCES:
patent: 3604789 (1971-09-01), McLafferty
patent: 3617928 (1971-11-01), Hausmann
patent: 3654569 (1972-04-01), Hausmann
patent: 3902136 (1975-08-01), Finkleman et al.
patent: 3973217 (1976-08-01), Guile
patent: 3998393 (1976-12-01), Petty

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