AUTOMATIC CONTAMINATION EVALUATOR FOR OPTICAL SURFACES

Award Information
Agency:
National Aeronautics and Space Administration
Branch
n/a
Amount:
$429,426.00
Award Year:
1984
Program:
SBIR
Phase:
Phase II
Contract:
n/a
Agency Tracking Number:
634
Solicitation Year:
n/a
Solicitation Topic Code:
n/a
Solicitation Number:
n/a
Small Business Information
Acton Research Corp.
P.o. Box 215, Acton, MA, 01720
Hubzone Owned:
N
Socially and Economically Disadvantaged:
N
Woman Owned:
N
Duns:
n/a
Principal Investigator:
Robert D. Fancy
() -
Business Contact:
() -
Research Institution:
n/a
Abstract
RECENT SHUTTLE FLIGHTS HAVE SHOWN THAT SIGNIFICANT TEMPORARYOR PERMANENT DEGRADATION OF OPTICAL SURFACES CAN OCCUR IN FLIGHT. SEVERAL OSMIUM-COATED SAMPLES, FLOWN ON SHUTTLE FLIGHT STS 5, EXPERIENCED A PERMANENT LOSS OF REFLECTIVITY BY FACTORS OF 2-3 IN THE VACUUM ULTRAVIOLET PORTION OF THE SPECTRUM. OTHER COATING MATERIALS AND WINDOWS CARRIED ABOARD EARLIER SHUTTLE FLIGHTS SUFFERED LESS OR EVEN NEGLIGIBLE DEGRADATION. NO INFORMATION ABOUT TEMPORARY DEGRADATION OR CONTAMINATION WAS GATHERED ON ANY STS MISSION. THIS PROJECT EXPLORES THE FEASIBILITY OF AN AUTOMATIC CONTAMINATION EVALUATOR (ACE). THE PROPOSED CONCEPT CONSISTS OF A LIGHT SOURCE, MONOCHROMATOR, SAMPLE WHEELS, AND PHOTON COUNTING READ-OUT FOR CONTINUOUSLY MONITORING AND UPDATING REFLECTIVITIES AND TRANSMITTANCES OF A VARIETY OF OPTICAL COATINGS AND WINDOWS DURING THE MISSION. THE SPECTRAL COVERAGE WOULD BE 1200-2100A. THE ACE WOULD PERMIT SCREENING OF OPTICAL MATERIALS FOR THEIR COMPATIBILITY WITH THE SHUTTLE ENVIRONMENT. IT COULD ALSO SERVE AS AN IN-FLIGHT DIAGNOSTIC RECORDING INSTRUMENT ON ANY STS MISSION EMPLOYING SENSITIVE OPTICS.

* information listed above is at the time of submission.

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