High Current Cathode Development

Award Information
Agency: Department of Defense
Branch: Air Force
Contract: FA9300-06-C-1001
Agency Tracking Number: F051-204-2463
Amount: $749,994.00
Phase: Phase II
Program: SBIR
Awards Year: 2006
Solicitation Year: 2005
Solicitation Topic Code: AF05-204
Solicitation Number: 2005.1
Small Business Information
BUSEK CO. INC.
11 Tech Circle, Natick, MA, 01760
DUNS: 184629491
HUBZone Owned: N
Woman Owned: N
Socially and Economically Disadvantaged: N
Principal Investigator
 Lawrence Byrne
 Research Engineer
 (508) 655-5565
 larry@busek.com
Business Contact
 Judy Budny
Title: Contracts Administrator
Phone: (508) 655-5565
Email: judy@busek.com
Research Institution
N/A
Abstract
High power dual mode Hall effect thruster system is an enabling technology for the orbital transport of DoD and commercial space assets. A dual mode Hall thruster is a propulsion system that is capable of efficient operation in a high thrust to power mode as well as a high specific impulse mode. This places not only stringent demands on the operating range of the thruster and power processor but also the hollow cathode used as the electron source for the thruster. In Phase I, Busek designed, fabricated and tested candidate high current cathode designs. Two designs demonstrated sustained operation at emission currents greater than 200 amps. One of the cathodes was tested for 100 hours of continuous operation at 110 amps. This cathode design was modeled using L-3 (formerly Boeing EDD) proprietary model and a first order lifetime prediction of 25,000 hours was estimated. In Phase II, additional characterization testing of various candidate designs will be performed. Demonstration of the 10 to 1 current turn-down range and lifetime will be a key objectives of the Phase II activities. Toward the conclusion of Phase II an advanced engineering model prototype will be fabricated and a 1000 hour test performed at high sustained current. A system design with Busek’s dual mode HET and modular PPU will be generated to serve as the basis for an integrated system demonstration test. An engineering prototype cathode will be delivered to the Air Force.

* information listed above is at the time of submission.

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