Eddy Current Braking Technology for Aircraft Catapult Systems

Award Information
Agency: Department of Defense
Branch: Navy
Contract: N00014-07-M-0330
Agency Tracking Number: N074-008-0002
Amount: $69,999.00
Phase: Phase I
Program: STTR
Awards Year: 2007
Solicitation Year: 2007
Solicitation Topic Code: N07-T008
Solicitation Number: N/A
Small Business Information
44 Hunt Street, Watertown, MA, 02472
DUNS: 073804411
HUBZone Owned: N
Woman Owned: N
Socially and Economically Disadvantaged: N
Principal Investigator
 Timothy Tiernan
 Principal Investigator
 (617) 668-6800
Business Contact
 Gerald Entine
Title: President
Phone: (617) 668-6800
Email: GEntine@rmdinc.com
Research Institution
 Francois D Lemire
 100 Institute Road
Worcester, MA, 1609
 (508) 831-5359
 Nonprofit college or university
The Navy uses steam powered catapults to launch aircraft from naval vessels. Currently, after the aircraft is launched, the massive catapult mechanism is slowed to a stop by a complex water braking system. This water braking system has many moving parts and experiences high stresses during operation, resulting in substantial maintenance and replacement costs. Permanent magnet, eddy current brakes (ECB), could provide the Navy with a safe, low cost catapult braking system, with no moving parts. ECB will substantially reduce maintenance time and cost, improve safety, and increase operational readiness. Permanent magnet, ECB technology is capable of stopping a large mass traveling at high speed. During Phase I, RMD and its collaborators at Worcester Polytechnic Institute and Magnetar Corporation will develop innovative 2-D and 3-D models for a permanent magnet ECB that will fit within the physical and structural constraints defined by the existing catapult braking system, and have the power to stop the massive catapult from a speed of 200 mph. During Phase II, the model will be used to design a prototype ECB for testing with the Navy.

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

Agency Micro-sites

SBA logo
Department of Agriculture logo
Department of Commerce logo
Department of Defense logo
Department of Education logo
Department of Energy logo
Department of Health and Human Services logo
Department of Homeland Security logo
Department of Transportation logo
Environmental Protection Agency logo
National Aeronautics and Space Administration logo
National Science Foundation logo
US Flag An Official Website of the United States Government