Low Cost/Low Noise Variable Pitch Ducted Fan

Award Information
Agency: National Aeronautics and Space Administration
Branch: N/A
Contract: NNL05AB24P
Agency Tracking Number: 040045
Amount: $99,923.00
Phase: Phase I
Program: STTR
Awards Year: 2005
Solicitation Year: 2004
Solicitation Topic Code: T7.01
Solicitation Number: N/A
Small Business Information
DUNS: 06044960
HUBZone Owned: N
Woman Owned: N
Socially and Economically Disadvantaged: N
Principal Investigator
 John Violette
 Principal Investigator
 (860) 829-6809
Business Contact
 Harrison Griswold
Title: Vice President
Phone: (860) 829-6809
Email: aciprops@aol.com
Research Institution
 Georgia Tech Applied Research Corporation
 Paul Hart
 505 Tenth Street
Atlanta, GA, 30318
 (404) 385-6697
 Nonprofit college or university
ACI proposes a design for a Propulsor (Low Cost/Low Noise Variable Pitch Ducted Fan) that has wide application in all sectors of Aviation. Propulsor hardware of this low cost design can be integrated with a broad range of aircraft engines (e.g. existing piston engines, automotive derivative piston engines, new design turbine engines) for use in new design aircraft. The proposed Propulsor design will incorporate known acoustic design features that support low noise aircraft operation. These features include the use of duct acoustic liners, attenuating harmonic stator vane and rotor blade configurations, and duct designs that direct/condition the exhaust air stream to minimize noise heard by individuals on the ground during aircraft takeoff, landing, and fly-over. The proposed Propulsor design makes possible the fabrication of low cost and low weight variable pitch fan blades and rotors. The new composite blade/retention design avoids the need for heavy and expensive ball bearings and other complex hub pitch change mechanism components.

* Information listed above is at the time of submission. *

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