Download or read book Thrust Chamber Material Technology Program written by and published by . This book was released on 1989 with total page 202 pages. Available in PDF, EPUB and Kindle. Book excerpt: This report covers work performed at Pratt and Whitney on development of copper-based materials for long-life, reuseable, regeneratively cooled rocket engine thrust chambers. The program approached the goal of enhanced cyclic life through the application of rapid solidification to alloy development, to introduce fine dispersions to strengthen and stabilize the alloys at elevated temperatures. After screening of alloy systems, copper-based alloys containing Cr, Co, Hf, Ag, Ti and Zr were processed by rapid-solidification atomization in bulk quantities. Those bulk alloys showing the most promise were characterized by tensile testing, thermal conductivity testing, and elevated-temperature, low- cycle fatigue (LFC) testing. Characterization indicated that Cu- 1.1% Hf exhibited the greatest potential as an improved-life thrust chamber material, exhibiting LCF life about four times that of NASA-Z. Other alloys (Cu- 0.6% Zr, and Cu- 0.6% Zr- 1.0% Cr) exhibited promise for use in this application, but needed more development work to balance properties. High-conductivity copper alloys, NASA-Z, thrust chamber materials, rapid solidification, powder metallurgy, dispersion strengthening, low-cycle fatigue, and thermal conductivity.

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Download or read book Research and Technology Program Digest written by United States. National Aeronautics and Space Administration and published by . This book was released on with total page 792 pages. Available in PDF, EPUB and Kindle. Book excerpt:

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Download or read book NASA Scientific and Technical Reports written by United States. National Aeronautics and Space Administration Scientific and Technical Information Division and published by . This book was released on 1967 with total page 2300 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book A Selected Listing of NASA Scientific and Technical Reports for written by United States. National Aeronautics and Space Administration. Scientific and Technical Information Division and published by . This book was released on 1965 with total page 1680 pages. Available in PDF, EPUB and Kindle. Book excerpt:

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Download or read book 1970 NASA Authorization written by United States. Congress. House. Committee on Science and Astronautics and published by . This book was released on 1969 with total page 862 pages. Available in PDF, EPUB and Kindle. Book excerpt:

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