Light Weight Collective Pitch Control Systems for Swashplateless Rotors

Award Information
Agency:
Department of Defense
Branch
Army
Amount:
$70,000.00
Award Year:
2008
Program:
SBIR
Phase:
Phase I
Contract:
W911W6-09-C-0008
Award Id:
87087
Agency Tracking Number:
A082-018-0680
Solicitation Year:
n/a
Solicitation Topic Code:
n/a
Solicitation Number:
n/a
Small Business Information
4415 Euclid Avenue, Suite 500, Cleveland, OH, 44103
Hubzone Owned:
N
Minority Owned:
N
Woman Owned:
N
Duns:
557510336
Principal Investigator:
MatthewBirch
Sr. Mechanical Engineer
(216) 649-0399
birch@orbitalresearch.com
Business Contact:
JosephSnyder
Vice President
(216) 649-0399
snyder@orbitalresearch.com
Research Institute:
n/a
Abstract
Orbital Research Inc proposes to design and optimize a light-weight swashplateless helicopter rotor collective control system. One enabling technology for swashplateless rotors utilizes on-blade controls to control the lift created by each rotor blade. However, a limitation of on-blade controls is that utilizing the individual blade lift authority for collective blade control diminishes the range available for cyclic blade control. A collective control system that primarily adjusts the root blade incidence angle gives increased lift without reducing the authority of the on-blade controls. To provide reduced complexity and weight Orbital Research proposes utilizing all-electric redundant harmonic drive actuators to drive a single mechanism capable of increasing the root blade incidence while maintaining integrated pathways for access to on-blade control mechanisms. Benefits of the harmonic drive actuators include: 1) No backlash, 2) high torque, and 3) simplicity. Because the harmonic drive actuators consist of DC motors and a low-volume, high-gear-ratio harmonic transmission, they are extremely reliable. This will result in a design with low mass, compact geometry, reduced complexity, easy maintenance and ballistic damage resistance.

* information listed above is at the time of submission.

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