Arc heater for thermal driven HF/DF chemical laser

Andre Sontag; Jean-Marie Baronnet

doi:10.1117/12.25913

1 February 1991 Arc heater for thermal driven HF/DF chemical laser

Andre Sontag, Jean-Marie Baronnet

Proceedings Volume 1397, 8th Intl Symp on Gas Flow and Chemical Lasers; (1991) https://doi.org/10.1117/12.25913
Event: Eighth International Symposium on Gas-Flow and Chemical Lasers, 1990, Madrid, Spain

Abstract

A new concept of plasma heater has been developed using water vapor as plasma gas (1). It also operates with sulfur-hexafluoride diluted with nitrogen and oxygen; it makes it possible to use it as an F-atoms generator for an arc heated supersonic diffusion HF/DF laser. The fluorine atoms are created by dissociation of SF6 injected directly into the arc heater with argon, nitrogen and oxygen as diluents. As compared with the well known arc heater (2) in which the fluorinatcd gas is mixed in an arc heated helium flow, a higher dissociation rate of this gas is obtained. The arc heater is powered by a rectifier of 500 V and 250 A. For an electrical input power of 80 kW, we obtain a thermal efficiency of above 80 % and a specific enthalpy, at the output of the arc heater, of 8.3 MJ/kg. The described F-atoms generator will be equipped in the near future with an axisymmetric nozzle array, in order to complete the entire HF/DF laser device.

Citation Download Citation

Andre Sontag and Jean-Marie Baronnet "Arc heater for thermal driven HF/DF chemical laser", Proc. SPIE 1397, 8th Intl Symp on Gas Flow and Chemical Lasers, (1 February 1991); https://doi.org/10.1117/12.25913

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