High Turndown Ratio, High Delta-Emittance, Variable Emissivity Electrochromics

Award Information
Agency: National Aeronautics and Space Administration
Branch: N/A
Contract: NNX11CG21P
Agency Tracking Number: 105016
Amount: $99,997.00
Phase: Phase I
Program: SBIR
Awards Year: 2011
Solicitation Year: 2010
Solicitation Topic Code: X3.04
Solicitation Number: N/A
Small Business Information
NJ, Holmdel, NJ, 07733-1138
DUNS: 807772942
HUBZone Owned: N
Woman Owned: N
Socially and Economically Disadvantaged: Y
Principal Investigator
 Prasanna Chandrasekhar
 Principal Investigator
 (732) 739-1122
 chandra.p2@ashwin-ushas.com
Business Contact
 Prasanna Chandrasekhar
Title: Business Official
Phone: (732) 739-1122
Email: chandra.p2@ashwin-ushas.com
Research Institution
 Stub
Abstract
Variable-emittance materials are in high demand for applications ranging from manned and unmanned space platforms (e.g. in radiators at the Moon's poles where damage could be prevented during times of low heat load) to spacecraft thermal control (especially for micro-, nano-spacecraft where no effective thermal control currently exists). They are superior to technologies such as loop heat pipes, louvers, MEMS systems, electrostatic systems, phase change materials, and others. A key requirement is a high Turn-Down Ratio (TDR, ratio of high/low emittance), up to 10.0, and Delta-emittance, up to 0.55. In ongoing and recent prior work (for Air Force, JPL, NASA), this firm has developed a novel, patented variable emittance skin technology, based on conducting polymers (CPs), microporous membranes and ionic liquids, with proven, space-environment performance. The proposed work will develop this with further, radical innovations including entirely new CPs, to achieve a TDR of ca. 8.0 and possibly up to (from current ca. 3.0), and Delta-emittance of ca. 0.60 (from current ca. 0.50). The more than eight innovations are based on actual, prior experimental data and include incorporation of new CPs, alteration of the substrates and surfaces, radical increase in doping level, use of new ionic liquid electrolytes with higher conductivity and several others.

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

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