USA flag logo/image

An Official Website of the United States Government

Innovative Rotorcraft Control for Shipboard Operations

Award Information

Department of Defense
Award ID:
Program Year/Program:
2007 / SBIR
Agency Tracking Number:
Solicitation Year:
Solicitation Topic Code:
Solicitation Number:
Small Business Information
Barron Associates, Inc.
1410 Sachem Place Suite 202 Charlottesville, VA 22901-2496
View profile »
Woman-Owned: No
Minority-Owned: No
HUBZone-Owned: No
Phase 1
Fiscal Year: 2007
Title: Innovative Rotorcraft Control for Shipboard Operations
Agency / Branch: DOD / NAVY
Contract: N68335-07-C-0310
Award Amount: $79,942.00


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.

Principal Investigator:

John D. Schierman
Senior Research Scientist

Business Contact:

Connie R. Hoover
General Manager
Small Business Information at Submission:

1410 Sachem Place Suite 202 Charlottesville, VA 22901

EIN/Tax ID: 541243694
Number of Employees:
Woman-Owned: No
Minority-Owned: No
HUBZone-Owned: No