Chapter 57. Program Overview: Reduced Cost, Improved F.O.D. Resistance and Improved Attachments for Insertion of Silicon Nitride Turbomachinery Components

  1. Ersan Ustundag and
  2. Gary Fischman
  1. A. C. Jones

Published Online: 26 MAR 2008

DOI: 10.1002/9780470294574.ch57

23rd Annual Conference on Composites, Advanced Ceramics, Materials, and Structures: B: Ceramic Engineering and Science Proceedings, Volume 20 Issue 4

23rd Annual Conference on Composites, Advanced Ceramics, Materials, and Structures: B: Ceramic Engineering and Science Proceedings, Volume 20 Issue 4

How to Cite

Jones, A. C. (1999) Program Overview: Reduced Cost, Improved F.O.D. Resistance and Improved Attachments for Insertion of Silicon Nitride Turbomachinery Components, in 23rd Annual Conference on Composites, Advanced Ceramics, Materials, and Structures: B: Ceramic Engineering and Science Proceedings, Volume 20 Issue 4 (eds E. Ustundag and G. Fischman), John Wiley & Sons, Inc., Hoboken, NJ, USA. doi: 10.1002/9780470294574.ch57

Author Information

  1. Sundstrand Power Systems San Diego, CA 92123

Publication History

  1. Published Online: 26 MAR 2008
  2. Published Print: 1 JAN 1999

ISBN Information

Print ISBN: 9780470375648

Online ISBN: 9780470294574

SEARCH

Keywords:

  • monolithic;
  • silicon;
  • hybrid;
  • aircraft;
  • non-aerospace

Summary

This paper describes an ambitious program, the DARPA Advanced Materials Partnership (AMP) funded under Office of Naval Research (ONR) Agreement # N001496–2–0014, aimed at reducing the cost and improving the performance of monolithic silicon nitride components for aerospace/industrial applications. The consortium was led by Sundstrand Aerospace and consisted of two aerospace suppliers, one industrial power equipment manufacturer, two ceramic component manufacturers, a rapid prototyping company, and three universities. The primary objective was to demonstrate insertion of improved structural ceramic components in near term applications. The application(s) were: a turbine stage and oil-less bearings for the Sundstrand TJ-50 miniature military turbojet engine, a rotor for a Hamilton Standard air turbine starter and a cooled nozzle vane for Pratt and Whitney's 25MW FT8 stationary industrial gas turbine engine.

Leading up to the insertion the partners worked on lowering the cost of fabrication by developing the hybrid molding process and parts were successfully produced for test. In addition, significant progress was made in developing new, high strength, structural joints for ceramic-to-metal interfaces. Finally, progress was made in improving the foreign object damage resistance of silicon nitride for high speed rotating components.