Patents Examined by Robert J. Webser
  • Gas dynamic lasers
    Patent number: 4013976
    Abstract: In a high-power laser system it is proposed that combustion or compressor gases be diverted from the normal flow path through a gas turbine engine into an auxiliary flowpath, and that their composition be subsequently adjusted by burning at least one hydrocarbon fuel in them and possibly also by adding other fuels and substances. Suitable aerodynamic expansion of the resultant gases produces a population inversion in the CO.sub.2 species, which can be utilized in a laser.
    Type: Grant
    Filed: January 21, 1975
    Date of Patent: March 22, 1977
    Assignee: Rolls-Royce (1971) Limited
    Inventors: Roland John Hill, Norman Thomas Jewell