Flameout and acoustic damping in pulsed chemical lasers
Abstract
The objective of this program was to address the acoustic damping issue of a repetitively-pulsed atmospheric pressure pulsed chemical laser. For this purpose a device, one meter in size parallel to the optical axis, was designed and constructed. To achieve flameout 80 fluidic devices were used to control the hydrogen flow. A new mixer was fabricated to obtain the required medium quality using a photochemical machining technique. For the acoustic quieting a heat exchanger was used to reduce the acoustic reflection of the hot-cold gas interfaces, and a muffler type acoustic absorber was constructed for acoustic energy attenuation. The results of a limited test period have been described.
- Publication:
-
Final Report Avco-Everett Research Lab
- Pub Date:
- June 1979
- Bibcode:
- 1979avco.rept.....L
- Keywords:
-
- Chemical Lasers;
- Elastic Damping;
- Flameout;
- Pulsed Lasers;
- Continuous Wave Lasers;
- Flow Theory;
- Heat Exchangers;
- Mathematical Models;
- Lasers and Masers