INNOVATIVE BOUNDARY LAYER CONTROL METHODS IN HIGH SPEED INLET SYSTEMS

Award Information
Agency:
National Aeronautics and Space Administration
Branch
n/a
Amount:
$490,591.00
Award Year:
1989
Program:
SBIR
Phase:
Phase II
Contract:
n/a
Award Id:
6785
Agency Tracking Number:
6785
Solicitation Year:
n/a
Solicitation Topic Code:
n/a
Solicitation Number:
n/a
Small Business Information
Po Box 5146, Incline Village, NV, 89450
Hubzone Owned:
N
Minority Owned:
N
Woman Owned:
N
Duns:
n/a
Principal Investigator:
Dr William C Rose
() -
Business Contact:
() -
Research Institute:
n/a
Abstract
A PROGRAM OF RESEARCH IS PROPOSED THAT WILL REVIEW THE RELEVANT LITERATURE ON RECENT DEVELOPMENTS IN BOUNDARY LAYERCONTROL IN HIGH-SPEED ENGINE INLETS. OF PARTICULAR INTERESTWILL BE INLETS INTENDED TO OPERATE AT FLIGHT MACH NUMBERS ABOVE 3.0 WHERE VISCOUS EFFECTS DOMINATE THE BEHAVIOR OF THEINTERNAL FLOW. THE OBJECTIVE OF THE PHASE I EFFORT IS TO DETERMINE THE FEASIBILITY OF USING INNOVATIVE BOUNDARY LAYERCONTROL ARRANGEMENTS THAT ALLOW HIGH INLET RECOVERY TO BE ACHIEVED AT LOW BLEED RATES. THE INVESTIGATION IS AN ANALYTIC ONE AND WILL BE CARRIED OUT WITH THE USE OF A FULL NAVIER-STOKES CODE. OF PARTICULAR INTEREST ARE CALCULATIONSTHAT WILL ADDRESS THE CONTROL OF THE STRONG LATERAL FLOW COMPONENT KNOWN TO EXIST IN GLANCING (OR SIDEWALL) SHOCK WAVE/BOUNDARY LAYER INTERACTIONS TYPICAL OF THOSE OCCURRING IN HIGH-SPEED ENGINE INLETS. AN EXAMPLE OF THE PROPOSED NAVIER-STOKES CODE APPLIED TO A MACH 5 INLET WITH BOUNDARY LAYER BLEED IS SHOWN AND EXTENSIONS OF THIS WORK ARE PROPOSED TO INCLUDE PARAMETRIC AND NOVEL INVESTIGATIONS OF DIFFERENT BOUNDARY LAYER BLEED ARRANGEMENTS. EFFORT PROPOSED FOR PHASE I WILL FOCUS ON OPTIMIZATION OF BLEED FOR BOUNDARY LAYER CONTROL WITHIN THE SUPERSONIC PORTION OF THE INLET ONLY. THE PROPOSED WORK IS TO BE CARRIED OUT ON THE NASA NATIONAL AERODYNAMIC SIMULATION FACILITY.

* information listed above is at the time of submission.

Agency Micro-sites


SBA logo

Department of Agriculture logo

Department of Commerce logo

Department of Defense logo

Department of Education logo

Department of Energy logo

Department of Health and Human Services logo

Department of Homeland Security logo

Department of Transportation logo

Enviromental Protection Agency logo

National Aeronautics and Space Administration logo

National Science Foundation logo
US Flag An Official Website of the United States Government