THE INNOVATION INVOLVES THE DESIGN OF A SYSTEM (TO BE REFERRED TO AS A THERMAL PRECOLLIMATOR) TO PROVIDE A THERMALGRADIENT IN FRON OF GRAZING INCIDENCE X-RAY TELESCOPES WHILEMINIMIZING OBSCURATION OF THE TELESCOPE FIELD-OF-VIEW.

Award Information
Agency:
National Aeronautics and Space Administration
Branch
n/a
Amount:
$43,213.00
Award Year:
1985
Program:
SBIR
Phase:
Phase I
Contract:
n/a
Award Id:
2745
Agency Tracking Number:
2745
Solicitation Year:
n/a
Solicitation Topic Code:
n/a
Solicitation Number:
n/a
Small Business Information
P O Box 4044, 1818 Blakefield Cir, Timonium, MD, 21093
Hubzone Owned:
N
Minority Owned:
N
Woman Owned:
N
Duns:
n/a
Principal Investigator:
DR HEROS NORAVIAN
PRINCIPAL INVESTIGATOR
() -
Business Contact:
() -
Research Institute:
n/a
Abstract
THE INNOVATION INVOLVES THE DESIGN OF A SYSTEM (TO BE REFERRED TO AS A THERMAL PRECOLLIMATOR) TO PROVIDE A THERMALGRADIENT IN FRON OF GRAZING INCIDENCE X-RAY TELESCOPES WHILEMINIMIZING OBSCURATION OF THE TELESCOPE FIELD-OF-VIEW. THE SYSTEM SHOULD OCCUPY A MINIMUM OF SPACE (3 INCHES) ABOVE THE TELESCOPE AND IT SHOULD BE DESIGNED NOT TO DISTORT DUE TO THERMAL GRADIENTS AND THEREBY CHANGE THE PERCENTAGE OF OBSCURATION. THE SECTION OF THE TELESCOPE UNDER INVESTIGATION IS ITS APERTURE WHICH IS CONSISTED OF FOUR INDIVIDUAL (90-DEGREE) SEGMENTS. THE REFLECTING SURFACES (0.005 INCH THIN POLISHED--NAME PLATE FINISH--ALUMINUM--TYPE1145), OCCUPY THE TELESCOPE APERTURE, ARE PLACED CONCENTRICALLY WITH AN AVERAGE SPACING OF 1/16 OF AN INCH. THE MAIN CONCERN IS THE DEFORMATION (AND, THEREFORE, THE OBSCURATION OF THE TELESCOPE FIELD-OF-VIEW) OF THESE REFLECTING SURFACES DUE TO THERMAL GRADIENTS. SEVERE THERMAL GRADIENTS MAY BE DEVELOPED, ESPECIALLY WHEN THE TELESCOPE IS AIMED AT DISTANT STARS (DEEP SPACE). THIS IS DUE TO THE FACT THAT THE INNER SIDE OF THE APERTURE IS FACEDTOWARDS A 20 DEGREE C ENVIRONMENT (TELESCOPE INTERIOR), WHILE THE OUTER SIDE IS EXPOSED TO DEEP SPACE AT -273 DEGREEC.

* information listed above is at the time of submission.

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