Accession Number : ADA271315


Title :   Initiation and Modification of Reaction by Energy Addition: Kinetic and Transport Phenomena


Descriptive Note : Final rept. 1 Sep 90-1 Sep 93,


Corporate Author : TRW SPACE AND ELECTRONICS GROUP REDONDO BEACH CA


Personal Author(s) : Fendell, Francis E ; Chou, Mau-Song


Full Text : https://apps.dtic.mil/dtic/tr/fulltext/u2/a271315.pdf


Report Date : 01 Oct 1993


Pagination or Media Count : 27


Abstract : Work has been pursued, by application of the fundamental principles of chemical kinetics and fluid transport, on proof of principle for a noval oblique-detonation-wave engine (ODWE) as an alternative to a mixing-controlled supersonic combustor. The concept involves the nonintrusive stabilization of a conical detonation wave. Laser technology permits the rapidly repeated pulsed deposition of energy at a fixed site on the axis of symmetry of a supersonically flowing, combustible mixture. Each pulse suffices for the direct initiation of a radially outwardly propagating, Chapman-Jouguet detonation wave. The interaction of the individual spherical waves, as the periodic train is convected by the flow, results in a nonintrusively stabilized conical wave, as the time interval between the very brief pulses decreases. The detonated gas may be expanded in a supersonic nozzle (of practical length) for discharge at ambient pressure, such that thrust is generated. (Author)


Descriptors :   *CHEMICAL REACTIONS , *ENGINES , *KINETICS , *DETONATION WAVES , CONVECTION , LASERS , COMBUSTORS , DEPOSITION , MIXING , ELASTIC WAVES , AIR BREATHING , HYPERSONIC FLOW , SUPERSONIC NOZZLES , IGNITION , FLUIDS , PROPULSION SYSTEMS , TRANSPORT PROPERTIES , FLOW FIELDS , PULSES


Subject Categories : Physical Chemistry
      Explosions
      Acoustics
      Combustion and Ignition


Distribution Statement : APPROVED FOR PUBLIC RELEASE