EVALUATION OF AIRCRAFT BRAKE MATERIALS

A test program was carried out to evaluate several new high-temperature friction materials for use in aircraft disk brakes. A specially built test apparatus utilizing a disk brake and wheel half from a small jet aircraft was used. The apparatus enabled control of brake pressure, velocity and braking time. Tests were run under both constant and variable velocity conditions and covered a kinetic energy range similar to that encountered in aircraft brake service. The materials evaluation showed that two newly developed friction materials show potential for use in aircraft disk brakes. One of the materials is a nickel-based sintered composite, while the other is a molybdenum-based material. Both materials show much lower wear rates than conventional copper-based materials and are better able to withstand the high temperatures encountered during braking. Additional materials improvement is necessary, however, since both materials show a significant negative slope of the friction-velocity curve at low velocities.

• Supplemental Notes:
  • ASLE/ASME Lubricating Conference, Kansas City, Missouri, 3-5 October 1977.
• Corporate Authors:

  American Society of Lubricating Engineers

  838 Busse Highway
  Park Ridge, IL  United States  60068
• Authors:
  • Ho, T L
  • Kennedy, F E
  • Peterson, M B
• Publication Date: 1977

Media Info

• Pagination: 7 p.

Subject/Index Terms

• TRT Terms: Aircraft; Brakes; Braking; Composite materials; Disc brakes; Materials; Materials tests; Pressure; Temperature; Velocity; Wear
• Subject Areas: Aviation; Materials; Vehicles and Equipment;

Filing Info

• Accession Number: 00174320
• Record Type: Publication
• Source Agency: Engineering Index
• Report/Paper Numbers: 77-LC-6B-2 Preprint
• Files: TRIS
• Created Date: Jun 28 1978 12:00AM