The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 27, 2017
Filed:
Aug. 26, 2013
The United States of America As Represented BY the Administrator of the National Aeronautics & Space Administration (Nasa), Washington, DC (US);
David A. Stewart, Santa Cruz, CA (US);
Daniel B. Leiser, San Jose, CA (US);
Abstract
A thermal protection system that reduces a mismatch of thermal expansion coefficients CTE between a first material layer (CTE1) and a second material layer (CTE2) at a first layer-second layer interface. A portion of aluminum borosilicate (abs) or another suitable additive (add), whose CTE value, CTE(add), satisfies (CTE(add)−CTE1)(CTE(add)−CTE2)<0, is distributed with variable additive density, ρ(z;add), in the first material layer and/or in the second material layer, with ρ(z;add) near the materials interface being relatively high (alternatively, relatively low) and ρ(z;add) in a region spaced apart from the interface being relatively low (alternatively, relatively high).