A High Reliability Variable-Speed Constant-Frequency Generator for Ram Air Turbines

Award Information
Agency: Department of Defense
Branch: Navy
Contract: N00421-03-P-1069
Agency Tracking Number: N022-0532
Amount: $69,869.00
Phase: Phase I
Program: SBIR
Awards Year: 2002
Solicitation Year: N/A
Solicitation Topic Code: N/A
Solicitation Number: N/A
Small Business Information
161 First Street, Cambridge, MA, 02142
DUNS: 157257502
HUBZone Owned: N
Woman Owned: N
Socially and Economically Disadvantaged: N
Principal Investigator
 Edward Lovelace
 Group Leader
 (617) 349-0814
Business Contact
 Don Flodin
Title: Vice President Applied Te
Phone: (617) 349-0871
Email: don.flodin@satcon.com
Research Institution
"Present ram air turbine (RAT) generators use variable blade pitch geometry to maintain constant speed to produce constant frequency electrical power. The variable blade pitch control and actuation systems have poor demonstrated reliability and add weightand cost to the generation system. RAT generator such as this are used to power the RADAR jamming pod (AN/ALQ99) presently carried by the EA-6B Prowler aircraft; the only airborne electronic warfare capable asset for the joint armed services. This proposalseeks to develop a variable-speed constant-frequency (VSCF) generator and electronics package which when coupled to a RAT with fixed blade pitch will result in a more reliable, lower system weight/size, and less costly solution for producing constantfrequency electrical power. The proposed generator system employs permanent magnet technology and reduced-rating power electronics to achieve these goals. This allows the RAT to be operated nearer its ideal aerodynamic operating speeds in variable windconditions. This Phase I project will result in analytical development of candidate designs with comparison to the present product solution and other competing alternatives. A follow on Phase II will result in prototype hardware design, fabrication, andtesting. Phase III will produce RAT generator systems for military platform installation and testing. The results of this research will demonstrate the viability and benefits of a VSCF generat

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

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