Rotorcraft Model Enhancements to Support Land and Sea-Based Testing and Operational Analysis

Award Information
Agency:
Department of Defense
Branch
Office of the Secretary of Defense
Amount:
$99,972.00
Award Year:
1996
Program:
SBIR
Phase:
Phase I
Contract:
n/a
Award Id:
32628
Agency Tracking Number:
32628
Solicitation Year:
n/a
Solicitation Topic Code:
n/a
Solicitation Number:
n/a
Small Business Information
1685 Plymouth Street Suite 250, Mountain View, CA, 94043
Hubzone Owned:
N
Minority Owned:
N
Woman Owned:
N
Duns:
n/a
Principal Investigator:
() -
Business Contact:
() -
Research Institute:
n/a
Abstract
We Propose to enhance rotorcraft simulation model to support land and sea-based flight testing and operational analysis. The model enhancement will resolve the long-time perplexing problems related to the fundamental simulation requirement for an accurate prediction of rotorcraft response in full range of flight. The solution proposed is to improve the widely used finite state dynamic wake model with the effect of rotor wake distortion. The new formulation will approach the problem in a systematic way and address the interaction of various disciplines related to the flight simulation modeling. The innovations of this proposal can be summarized as follows: (1) Inclusion of the tip vortex distortion effect in the finite state dynamic wake model to overcome the poor prediction of rotorcraft off-axis response; (2) Modification of the finite state dynamic wake model in the vortex ring state to generate a simulation model applicable in full flight conditions; (3) The finite state dynamic wake model will be formulated so that the effects of other rotors, fuselage, and aerodynamic surfaces (such as wings in a tiltrotor) can be included; (4) Integration of the enhanced finite state dynamic wake model into a comprehensive simulation program (FLIGHTLAB) so that the inter-disciplinary couplings will be addressed.

* information listed above is at the time of submission.

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