Advanced chemical laser cavity fuel injection system

Patent · Tue Apr 12 04:00:00 EDT 1988

OSTI ID:5003177

Morr, G F; Pruett, S L

This patent describes a chemical laser cavity fuel injection system, a converging-diverging nozzle for accelerating an oxidizer at a supersonic Mach number. The converging-diverging nozzle has opposite diverging walls that terminate at an exit plane of the converging-diverging nozzle. A boundary layer region is adjacent each diverging wall, a pair of manifolds are mounted relative to the converging-diverging nozzle structure and at the exit plane of the converging-diverging nozzle where the diverging walls terminate. Each of the pair of manifolds has fuel injection wedges connected thereto with fuel ports, thereein for injecting fuel therethrough. The wedges of each of the pair of the manifolds project in opposite directions and across a portion of the converging-diverging nozzle exit plane from one diverging wall toward the other and each of the wedges terminate at one of the boundary layer regions to define a multiplicity of wedges that are mounted on the pair of manifolds in a staggered arrangement so that each wedge is fed fuel from one end and terminated at another end before projecting across the one of the boundary layer regions to cause pressures and Mach numbers from flow through the nozzle and at spaced positions across the nozzle to be more uniform due to the wedges being staggered and terminating at the one of the boundary layer regions to thereby reduce pressure losses through the nozzle and cause a more efficient lasing medium to be produced.

• Assignee: Secretary of the Army, Washington, DC
• Patent Number(s): US 4737965
• OSTI ID: 5003177
• Country of Publication: United States
• Language: English

Related Subjects

33 ADVANCED PROPULSION SYSTEMS
330603* -- Vehicle Design Factors-- Engine System
42 ENGINEERING
420300 -- Engineering-- Lasers-- (-1989)
BOUNDARY LAYERS
CHEMICAL LASERS
DESIGN
FLUID FLOW
FLUID MECHANICS
FUEL INJECTION SYSTEMS
FUEL SYSTEMS
HYDRAULICS
LASER CAVITIES
LASER MATERIALS
LASERS
LAYERS
MACH NUMBER
MATERIALS
MECHANICS
NOZZLES
OXIDIZERS
PRESSURE DROP
SUPERSONIC FLOW
VELOCITY