Innovative Rotorcraft Control for Shipboard Operations

Award Information
Agency:
Department of Defense
Branch
Navy
Amount:
$149,736.00
Award Year:
2007
Program:
SBIR
Phase:
Phase I
Contract:
N68335-07-C-0310
Agency Tracking Number:
N071-031-0775
Solicitation Year:
2007
Solicitation Topic Code:
N07-031
Solicitation Number:
2007.1
Small Business Information
BARRON ASSOC., INC.
1410 Sachem Place, Suite 202, Charlottesville, VA, 22901
Hubzone Owned:
N
Socially and Economically Disadvantaged:
N
Woman Owned:
N
Duns:
120839477
Principal Investigator:
John Schierman
Senior Research Scientist
(434) 973-1215
schierman@bainet.com
Business Contact:
Connie Hoover
General Manager
(434) 973-1215
barron@bainet.com
Research Institution:
n/a
Abstract
An adaptive flight control concept is proposed to better compensate for disturbances on the rotorcraft due to ship airwake effects and the moving ship deck during helicopter or tiltrotor shipboard operations. The flight controller could ultimately be used on a fully autonomous system or in a pilot-assist mode on manned rotorcraft. A parameter identification algorithm and an on-line learning approach will be applied to estimate in real-time important effects of the ship airwake and ship motion. The system would identify both the statistical properties of the apparently random characteristics of the airwake as well as the re-peatable and deterministic disturbances of the airwake due to the ship’s geometry and motion. A flight controller will be designed that uses the information from the on-line learning algorithms to improve dis-turbance rejection properties of the aircraft. The system would provide enhanced feedback compensation to improve rejection of disturbances due to random airwake forces impinging on the vehicle, and feed-forward compensation to help compensate for deterministic airwake disturbances. A high-fidelity tilt-rotor UAV simulation will be further advanced and employed to demonstrate and evaluate the adaptive control system. Preliminary real-time piloted simulations will be the focus of the Phase I Option effort.

* information listed above is at the time of submission.

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