The Boeing Company

Kris Shigeko Oka

David Bruce Marshall

Vann Heng

Michael Droege

Janet B Davis

Andrea O Barney

Alfred A Zinn

Maryann Santos

Peter Ernest David Morgan

A hybrid insulation material comprises of porous ceramic substrate material impregnated with nanoporous material and method of making the same is the topic of this invention. The porous substrate material has bulk density ranging from 6 to 20 lb/ft and is composed of about 60 to 80 wt % silica (SiO ) 20 to 40 wt % alumina (Al O ) fibers, and with about 0.1 to 1.0 wt % boron-containing constituent as the sintering agent. The nanoporous material has density ranging from 1.0 to 10 lb/ft and is either fully or partially impregnated into the substrate to block the pores, resulting in substantial reduction in conduction via radiation and convention. The nanoporous material used to impregnate the fiber substrate is preferably formed from a precursor of alkoxysilane, alcohol, water, and an acid or base catalyst for silica aerogels, and from a precursor of aluminum alkoxide, alcohol, water, and an acid or base catalyst for alumina aerogels.

Hybrid aerogel rigid ceramic fiber insulation and method of producing same

Monazite or xenotime-based blanket coatings that stiffen ceramic fabrics without causing embrittlement at temperatures of at least as high as 2400&deg; F. are provided. Methods for making the coatings are also provided. The methods comprise the synthesis of high purity, monazite and xenotime powders with the stoichiometric ratio of metal to phosphorous of about 1:1.

Monazite-based coatings for thermal protection systems

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Huntington Beach, CA, United States of America

Kris Shigeko Oka