Aerodynamic window altitude control

Details Aerodynamic window altitude control Aerodynamic window altitude control

1975-08-28

1976-08-03

Webster, Robert J.

Oscillators

Molecular or particle resonant type

331 945D, 330 43, 350319, H01S 322, G02B 500

Patent

active

039732177

ABSTRACT:
A gas laser emits an output laser beam from a low pressure region to a region having a higher pressure. This is done through an opening in the side of a laser device. Under normal circumstances, the provision of such an opening would incur a flow of air from the high pressure side, externally of the laser device, to the low pressure side within the device. To prevent this, an aerodynamic window is placed in a passageway leading from said opening in the laser device through which the laser beam passes. A gas flow is passed across said passageway which will provide a flow segment having a pressure differential across the segment which is equal to that between the low and high pressure regions. When such an aerodynamic window is used in an aircraft and the aircraft experiences changes in altitude, the pressure differential across the flow segment changes. By using a multi-element nozzle array to provide the aerodynamic window flow, where each element of the array contains its own supply valve, changes in pressure differential are accommodated by throttling the individual elements.

REFERENCES:
patent: 3907409 (1975-09-01), Hausmann

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