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Wheel and Brake (Sand and Permanent Mold) Castings - Minimum Requirements for Aircraft Applications
- Aerospace Standard
Published January 06, 2011 by SAE International in United States
This SAE Aerospace Standard (AS) sets forth the minimum quality required for aircraft wheel and brake castings. Its use will establish minimum acceptable requirements for internal structure and surface conditions and is predicated on the use of a casting factor for the ultimate load of more than 1.51 through 2.00. When casting factors of 1.25 through 1.50 are used, visual, penetrant, and radiographic or other approved equivalent nondestructive inspection methods shall all be required on each production casting. Where specific parts, or areas of parts, require a quality level exceeding that described by this document, the requirements shall be established by negotiation between the purchaser and vendor.
The document has not been maintained, is not up to date and contains at least some information that could mislead someone. For example, the document discusses the use of magnesium brake parts. Modern FAA rules disallow the use of magnesium as a major constituent for some aircraft. There is only limited use of castings for structural components in wheels and brakes today as most of the structural parts are now made from forgings.
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