HF/DF Chemical Laser Performance Modification by Chemical Additives.
Final rept. 29 Oct 73-30 Jun 74,
LOCKHEED MISSILES AND SPACE CO INC HUNTSVILLE ALA HUNTSVILLE RESEARCH AND ENGINEERING CENTER
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The premixed DF supersonic flow chemical laser promises favorable operational characteristics. To establish feasibility, an experimental program has been initiated to develop the chemical inhibition and ignition techniques required to achieve premixed supersonic flow HFDF chemical laser operation. This report documents the available results. Premixing the inhibition by 1 to 4 O2 has been achieved in 5 gsec and 50 gsec nozzles operated at 200 torr total pressure. Stable combustion downstream of the nozzle exit plane has also been achieved, with ignition attained by both NO and COS chemical activators, and by pulsed ac and continuous dc electrical discharges across the flow. No HF or DF continuous wave laser power was measured in tests performed at cavity pressures from 60 to 80 torr. Analytical results obtained suggest that with further refinement of the techniques developed, high specific powers should be attainable at the relatively high cavity pressures employed in these experiments. Achieving more uniform ignition of the flow in the primary area in need of development.
- Physical Chemistry
- Lasers and Masers
- Fluid Mechanics