Experimental investigation on optimal length of diffuser throat in directly drained CW DF/HF chemical laser

yan baozhu; yuan shengfu; lu qisheng

Volume 21 Issue 03

Mar. 2009

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yan baozhu, yuan shengfu, lu qisheng. Experimental investigation on optimal length of diffuser throat in directly drained CW DF/HF chemical laser[J]. High Power Laser and Particle Beams, 2009, 21.

Citation:

yan baozhu, yuan shengfu, lu qisheng. Experimental investigation on optimal length of diffuser throat in directly drained CW DF/HF chemical laser[J]. High Power Laser and Particle Beams, 2009, 21.

yan baozhu, yuan shengfu, lu qisheng. Experimental investigation on optimal length of diffuser throat in directly drained CW DF/HF chemical laser[J]. High Power Laser and Particle Beams, 2009, 21.

Citation:

yan baozhu, yuan shengfu, lu qisheng. Experimental investigation on optimal length of diffuser throat in directly drained CW DF/HF chemical laser[J]. High Power Laser and Particle Beams, 2009, 21.

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Experimental investigation on optimal length of diffuser throat in directly drained CW DF/HF chemical laser

1.
College of Optoelectric Science and Engineering,National University of Defense Technology,Changsha 410073,China

Publish Date: 2009-03-15

Abstract

Abstract

To study the effect of diffuser throat length on the starting characteristic of the directly drained CW DF/HF chemical laser(DDCL), a double-nozzle small-scale model of the DDCL gas channel was built up. A series of experiments without a secondary flow was conducted with diffusers whose throat lengths were different, and the starting and operating pressures were acquired and considered to be the criterion for judging the length of the diffuser throat. The experimental result indicates that the optimal length of the diffuser throat in the given experimental model is 17 times that of the equivalent diameter.
- chemical laser,
- pressure recovery,
- diffuser throat,
- starting pressure,
- operating pressure,
- equivalent diameter,
- supersonic ejector

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