HELICOPTER ROTOR DISK AND BLADE ELEMENT COMPARISONS

Award Information
Agency:
Department of Defense
Branch
Navy
Amount:
$499,571.00
Award Year:
1992
Program:
SBIR
Phase:
Phase II
Contract:
n/a
Award Id:
13153
Agency Tracking Number:
13153
Solicitation Year:
n/a
Solicitation Topic Code:
n/a
Solicitation Number:
n/a
Small Business Information
1804 N Shoreline Blvd, Mountain View, CA, 94043
Hubzone Owned:
N
Minority Owned:
N
Woman Owned:
N
Duns:
n/a
Principal Investigator:
Ofer Bruhis
(415) 968-1464
Business Contact:
() -
Research Institution:
n/a
Abstract
MODERN COMPUTER TECHNOLOGY OFFERS THE CAPABILITY TO PERFORM REAL-TIME PROCESSING OF MATHEMATICAL MODELS FAR MORE SOPHISTICATED THAN THOSE CURRENTLY BEING UTILIZED IN TRAINING APPLICATIONS. THE CAPABILITY TO COST EFFECTIVELY IMPLEMENT BLADE ELEMENT ROTOR MODELS IN REAL TIME USING MULTIPROCESSOR ARCHITECTURES AND RISC TECHNOLOGY PROCESSORS HAS BEEN DEMONSTRATED. IN ORDER TO EFFECTIVELY UTILIZE THIS NEW COMPUTATIONAL CAPABILITY IT IS NECESSARY TO ASSES THE TRADE-OFFS BETWEEN INCRESED FIDELITY AND THE COST ASSOCIATED WITH ADDED SOPHISTICATION IN ROTORCRAFT MATHEMATICAL MODELING. THE OBJECTIVE OF THIS STUDY IS TO PERFORM OFF-LINE COMPARISONS OF BLADE ELEMENT AND ROTOR MAP MODELS UNDER OTHERWISE IDENTIFICAL CONDITIONS TO ASSESS THE SIGNIFICANCE OF THIS INCREASED SOPHISTICATION TO SIMULATION FIDELITY AND TO WEIGH IT AGAINST THE ADDITIONAL COST ASSOCIATED WITH THE INCREASED COMPUTATIONAL REQUIREMENTS. THE COMPARISON WILL BE CONDUCTED USING THE FLIGHTLAB SYSTEM TO PROVIDE A MODULAR APPROACH TO REPLACING ONLY THE ROTOR MODEL IN A CONFIGURED SIMULATION. BLADE ELEMENT MODELS WILL BE COMPARED WITH ROTOR MAP MODELS AND AVAILABLE FLIGHT TEST DATA FOR BOTH THE MAIN AND TAIL ROTORS OF A UH-60 BLACK HAWK. COMPARISONS OF TRIM, STATIC STABILITY, TRANSIENT RESPONSE AND FREQUENCY RESPONSE WILL BE USED TO EVALUATE THE MODELS. HANDLING QUALITIES COMPARISONS WILL BE MADE USING THE NEW ADS33C HELICOPTER HANDLING QUALITIES SPECIFICATIONS. COMPARISONS WILL BE MADE BOTH FOR NOMINAL FLIGHT CONDITIONS AND AGGRESSIVE, EDGE-TO-THE-ENVELOP MANEUVERS.

* 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