SUPERSONIC COMBUSTION: ENHANCED IGNITION MIXING FLAME HOLDING AND DIAGNOSTIC CONCEPTS

Award Information
Agency: Department of Defense
Branch: Air Force
Contract: N/A
Agency Tracking Number: 6262
Amount: $49,956.00
Phase: Phase I
Program: SBIR
Awards Year: 1987
Solitcitation Year: N/A
Solitcitation Topic Code: N/A
Solitcitation Number: N/A
Small Business Information
Physical Sciences Inc
Po Box 3100 - Research Pk, Andover, MA, 01810
Duns: N/A
Hubzone Owned: N
Woman Owned: N
Socially and Economically Disadvantaged: N
Principal Investigator
 TERENCE E PARKER
 (617) 475-9030
Business Contact
Phone: () -
Research Institution
N/A
Abstract
WE PROPOSE A THREE PART, PHASE I, PROGRAM OF DIRECT INTEREST TO SCRAM JET COMBUSTOR DESIGN WHICH LAYS A PROPER FOUNDATION FOR HIGH-ENTHALPY,SUPERSONIC COMBUSTING FLOW EXPERIMENTS SUITABLE FOR A PHASE II PROGRAM. BOTH PHASE I AND II RESEARCH EFFORTS FOCUS ON FUEL/AIR MIXING, WHICH WILL SIGNIFICANTLY AFFECT IGNITION AND FLAME HOLDING PERFORMANCE. A SPECIFIC INJECTOR CONFIGURATION, WHICH PRODUCES INTERSECTING OBLIQUE SHOCKS, AND ITS PERFORMANCE, WILL BE THE PRIMARY OBJECT OF STUDY; THIS INTERSECTING SHOCK FLOWFIELD HAS BEEN DEMONSTRATED TO PRODUCE ENHANCED MIXING IN SUPERSONIC FLOW DIFFUSION LASERS. THE PROPOSED CONFIGURATION HAS THE POTENTIAL OF PRODUCING ENHANCED IGNITION DUE TO INCREASED AIR TEMPERATURE IN ADDITION TO A STABLE, FLAMEHOLDING TYPE OF FLOW. HIGH-SPEED, COLD FLOW FUEL/AIR MIXING EXPERIMENTS, PERFORMED IN A SUPERSONIC NOZZLE, WILL OCCUPY THE BULK OF THE PHASE I EFFORT. PRIMARY EXPERIMENTAL DIAGNOSITCS ARE INTERFEROMETRY FOR SHOCK WAVE IDENTIFICATION AND DENSITY GRADIENT MAPPING IN ADDITION TO LASER-INDUCED FLUORESCENCE TO QUANTIFY THE MIXING OF PRESSURE EFFECTS UPON OH EMISSION TO SPECIFY SENSITIVITY REQUIREMENTS FOR A HIGH SPEED COMBUSTING FLOW OPTICAL DIAGNOSTIC AND A DETAILED SHOCK TUNNEL NOZZLE DESIGN FOR THE HIGH-ENTHALPY COMBUSTION FLOW EXPERIMENTS.

* information listed above is at the time of submission.

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