Compact, Lightweight, High Voltage Propellant Isolators

Award Information
Agency: National Aeronautics and Space Administration
Branch: N/A
Contract: NNC05CA13C
Agency Tracking Number: 035128
Amount: $595,875.00
Phase: Phase II
Program: SBIR
Awards Year: 2005
Solitcitation Year: 2003
Solitcitation Topic Code: F7.01
Solitcitation Number: N/A
Small Business Information
Technology Assessment & Transfer, Inc.
133 Defense Hwy Suite 212, Annapolis, MD, 21401-8907
Duns: 1515390
Hubzone Owned: N
Woman Owned: Y
Socially and Economically Disadvantaged: N
Principal Investigator
 Walter Zimbeck
 Principal Investigator
 (410) 224-3710
Business Contact
 Sharon Fehrenbacher
Title: CEO
Phone: (410) 224-3710
Research Institution
TA&T, Inc. proposes an enabling fabrication process for high voltage isolators required in high power solar electric and nuclear electric propulsion (SEP and NEP, respectively). Future high thrust, high specific impulse engines will have to support beam voltages up to 10kV to meet performance requirements. If existing isolator designs are simply scaled-up for higher voltages, then a significant mass penalty is incurred. The proposed fabrication approach, known as ceramic stereolithography (CSL), is an automated, layered manufacturing process that enables net shape, monolithic ceramics with complex geometry. The Phase I effort successfully demonstrated fabrication and high voltage testing of three prototype isolator designs that would be very difficult to fabricate using conventional ceramic processing. The Phase II objectives include refinement of the CSL process to the point where it is a reliable fabrication approach for high voltage isolators, development and demonstration of an isolator design with maximum voltage standoff in a minimum volume, assessment life-limiting issues and accelerated life testing. The Phase II project will result in a new fabrication tool for high voltage isolation and insulation components, and a new optimized isolator design suitable for HiPEP and NEXIS ion engines.

* information listed above is at the time of submission.

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