NASA STTR 2012 Solicitation


PROPOSAL NUMBER: 12-1 T2.01-9819
RESEARCH SUBTOPIC TITLE: Space Power and Propulsion

NAME: Angstrom Designs, Inc. NAME: University of California at Santa Barbara
STREET: 1204 Calle Del Sol STREET: 3227 Cheadle Hall
CITY: Santa Barbara CITY: Santa Barbara
STATE/ZIP: CA  93120 - 4914 STATE/ZIP: CA  93106 - 2050
PHONE: (805) 876-4138 PHONE: (805) 893-8809

PRINCIPAL INVESTIGATOR/PROJECT MANAGER (Name, E-mail, Mail Address, City/State/Zip, Phone)
Casey Hare
1204 Calle Del Sol
Santa Barbara, CA 93101 - 4914
(805) 448-4138

CORPORATE/BUSINESS OFFICIAL (Name, E-mail, Mail Address, City/State/Zip, Phone)
Tim Halsey
1204 Calle Del Sol
Santa Barbara, CA 93101 - 4914
(805) 284-4535

Estimated Technology Readiness Level (TRL) at beginning and end of contract:
Begin: 3
End: 4

Technology Available (TAV) Subtopics
Space Power and Propulsion is a Technology Available (TAV) subtopic that includes NASA Intellectual Property (IP). Do you plan to use the NASA IP under the award?

TECHNICAL ABSTRACT (Limit 2000 characters, approximately 200 words)
Solar cells are the critical power source for the majority of space missions. The advancement from single junction silicon cells to current, state-of-the-art, triple junction, germanium cells enabled greater mission power per weight, stowed volume and deployed area. Near-term, advanced solar cell technologies will range from 4 to 6 junctions, and include a variety of band gaps.
Solar cell testing is critical to space missions. Every solar cell is tested at the cell level under continuous light and at the panel, wing and sometimes spacecraft level multiple times under LAPSS. Current test methods calibrate the light source by measuring the current output of each junction and adjusting the source accordingly. Today's sources are a combination of lamps and filters. As cells with more the 3 junctions come into test, more flexible sources of narrower bands will be needed and current methods will have extreme difficulty, complexity and expense trying to keep up with the variety of near-term advanced solar cell designs.
We propose a solid state illumination source with enough discrete source wavelengths to be flexible enough to be calibrated to any number of junctions, up to 6, for continuous cell testing. In addition, this source would be cost effective enough to allow many sources connected together to perform large area testing, pulsed or continuous, for panel and wing level testing. Calibration would follow similar methods to the current practice, but would be simplified through a software interface.

POTENTIAL NASA COMMERCIAL APPLICATIONS (Limit 1500 characters, approximately 150 words)
This program will benefit all NASA missions that will use solar cells with more than 3 junctions. The illumination source may also replace existing 3 junction illumination sources. The usefulness of the proposed source across multiple numbers of junctions and larger than single cell areas means there is potentially broad application of this technology for all testing of future solar cell technologies at the cell, string, panel, wing and spacecraft level.

POTENTIAL NON-NASA COMMERCIAL APPLICATIONS (Limit 1500 characters, approximately 150 words)
The benefits above apply to non-NASA applications as well. The proposed source could be used by all NASA contractors and commercial prime spacecraft suppliers for testing of cells with more than 3 junctions at the cell, string, panel, wing and spacecraft levels.
There is also potential application to terrestrial applications, particularly where the flexibility of the proposed design helps scientists and test engineers determine additional wavelength dependence of the device under test than would be possible with a less flexible, traditional lamp-based method.

TECHNOLOGY TAXONOMY MAPPING (NASA's technology taxonomy has been developed by the SBIR-STTR program to disseminate awareness of proposed and awarded R/R&D in the agency. It is a listing of over 100 technologies, sorted into broad categories, of interest to NASA.)
Circuits (including ICs; for specific applications, see e.g., Communications, Networking & Signal Transport; Control & Monitoring, Sensors)
Nondestructive Evaluation (NDE; NDT)
Simulation & Modeling

Form Generated on 03-28-13 15:21