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Proceedings Paper

One-stage free-vortex aerodynamic window with pressure ratio 100 and atmospheric exhaust
Author(s): Victor M. Malkov; A. V. Trilis; Andrew V. Savin; S. L. Druzhinin
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Paper Abstract

The aerodynamic windows (AW) are intended for a high power extraction from the gas laser optical cavity, where the pressure is much lower than environment pressure. The main requirements for the aerodynamic windows are to satisfy a low level of optical disturbances in a laser beam extraction channel and an air leakage absence into the optical cavity. Free vortex AW are most economic from a point of working gas consumption and the greatest pressure differential is realized on them at an exhaust to atmosphere. For ideal gas it is possible to receive as much as large pressure differential, however for real gas a pressure differential more than P≥50 is difficult to achieve. To achieve the pressure ratio 100 in free vortex single-stage AW the method of stabilizing of boundary layer was used. The gas of curtain was decelerated in the diffuser and was exhausted into the atmosphere straightly. The pressure recovery improvement was achieved by using the boundary layer blowing inside the diffuser. Only 10% of total mass flow was used for boundary layer blowing.

Paper Details

Date Published: 23 March 2005
PDF: 5 pages
Proc. SPIE 5777, XV International Symposium on Gas Flow, Chemical Lasers, and High-Power Lasers, (23 March 2005); doi: 10.1117/12.611005
Show Author Affiliations
Victor M. Malkov, Laser Systems Ltd. (Russia)
A. V. Trilis, Laser Systems Ltd. (Russia)
Andrew V. Savin, Laser Systems Ltd. (Russia)
S. L. Druzhinin, Laser Systems Ltd. (Russia)


Published in SPIE Proceedings Vol. 5777:
XV International Symposium on Gas Flow, Chemical Lasers, and High-Power Lasers
Jarmila Kodymova, Editor(s)

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