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Maintainability Recommendations for Aircraft Wheel and Hydraulically Actuated Brake Design

A-5A Wheels, Brakes and Skid Controls Committee
  • Aerospace Standard
  • ARP813C
  • Current
Published 2019-02-15 by SAE International in United States
This SAE Aerospace Recommended Practice (ARP) recommends the maintainability features which should be considered in the design of aircraft wheels and brakes. The effect on other factors, such as, cost, weight, reliability, and compatibility with other systems should be weighed before the incorporation of any of these maintainability features into the design.
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Thermal Sensitive Inflation Pressure Release Devices for Tubeless Aircraft Wheels

A-5A Wheels, Brakes and Skid Controls Committee
  • Aerospace Standard
  • AS707C
  • Current
Published 2019-02-15 by SAE International in United States
The focus of this SAE Aerospace Standard (AS) is the integration of thermally actuated pressure release devices, hereafter referred to as fuse plugs, with the wheel and brake assembly. It does not address the manufacturing, quality or acceptance test requirements pertaining to the production of these fuse plugs. It establishes minimum design, installation, qualification, and operational requirements for fuse plugs which are used only in tubeless tire type aircraft braked wheels. Fuse plugs are designed to completely release the contained inflation pressure from a tubeless tire and wheel assembly when brake generated heat causes the tire or wheel to exceed a safe temperature level. The objective is to prevent tire or wheel rupture due to brake generated heat that could cause an unsafe condition for personnel or the aircraft. (Reference: U.S. Department of Transportation FAA Advisory Circular No. 23-17C; Title 14, Code of Federal Regulations (14 CFR) Part 25.735 (j); U.S. Department of Transportation FAA Advisory Circular No. 25.735-1 and U.S. Department of Transportation FAA Advisory Circular No. 25-7C.)
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Wheel Roll on Rim Criteria for Aircraft Applications

A-5A Wheels, Brakes and Skid Controls Committee
  • Aerospace Standard
  • ARP1786C
  • Current
Published 2019-02-15 by SAE International in United States
This SAE Aerospace Recommended Practice (ARP) is to provide a recommended minimum laboratory roll performance for main landing gear aircraft wheels without tires installed and applies to both bolted and lock-ring wheel designs for FAA Part 25 and military aircraft main wheels (not required for any nose wheels or main wheels on FAA Part 23, 27 or 29 applications).
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Information on Electric Brakes

A-5A Wheels, Brakes and Skid Controls Committee
  • Aerospace Standard
  • AIR5937
  • Current
Published 2019-02-15 by SAE International in United States
This SAE Aerospace Information Report (AIR) describes the design, operation, and attributes of electrical braking systems for both military and commercial aircraft. At this time, the document focuses only on brakes utilizing electromechanical actuators (EMAs), as that is the present state of the art. As such, the discussions herein assume that EMAs can simply replace the hydraulic actuation portion of typical brake system leaving things such as the wheel and heat sink unchanged. Furthermore, the document provides detail information from the perspective of brake system design and operation. The document also addresses failure modes, certification issues, and past development efforts. Details on the design and control of electric motors, gear train design, ball or roller screw selection are available in the reference documents and elsewhere, but are outside the scope of this document. Other all-electric technologies such as piezoelectric actuation or more exotic methods of applying drag to a rotating wheel may be included at a later time. Important: Electric braking systems for aircraft are at the early stages of production implementation. There are also…
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Nondestructive Inspection (NDI) Methods Used During Production and Operation of Aircraft Wheels and Brakes

A-5A Wheels, Brakes and Skid Controls Committee
  • Aerospace Standard
  • AIR4777C
  • Current
Published 2018-10-15 by SAE International in United States
This SAE Aerospace Information Report (AIR) identifies current nondestructive inspection (NDI) methods used to ensure product integrity and maximize "in service" life of the major structural components of aircraft wheel and brake assemblies.
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Nondestructive Inspection (NDI) Methods Used During Production and Operation of Aircraft Wheels and Brakes

A-5A Wheels, Brakes and Skid Controls Committee
  • Aerospace Standard
  • AIR4777B
  • Historical
Published 2018-09-02 by SAE International in United States
This SAE Aerospace Information Report (AIR) identifies current nondestructive inspection (NDI) methods used to ensure product integrity and maximize "in service" life of the major structural components of aircraft wheel and brake assemblies.
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Overpressurization Release Devices

A-5A Wheels, Brakes and Skid Controls Committee
  • Aerospace Standard
  • ARP1322C
  • Current
Published 2018-06-21 by SAE International in United States
This SAE Aerospace Recommended Practice (ARP) specifies the minimum design and qualification test recommendations for aircraft wheel overpressurization release devices used with tubeless aircraft tires to protect from possible explosive failure of the contained inflation chamber due to overinflation. Devices of this type provide a means, but not the only means, for showing compliance to Subsection 25.731(d) of Part 25 of Title 14 of the Code of Federal Regulations. Devices of this type will not protect against flash fire explosive conditions within the inflation chamber which may occur due to extremely overheated brakes or spontaneous combustion caused by a foreign substance within the inflation chamber. To help protect against this condition, nitrogen (N2) or other inert gas should be used for inflation.
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Minimum Performance Standard for Parts 23, 27, and 29 Aircraft Wheels, Brakes, and Wheel and Brake Assemblies

A-5A Wheels, Brakes and Skid Controls Committee
  • Aerospace Standard
  • AS5714A
  • Current
Published 2017-08-15 by SAE International in United States
This SAE Aerospace Standard (AS) prescribes the Minimum Performance Standards (MPS) for wheel, brake, and wheel and brake assemblies to be used on aircraft certificated under 14 CFR Parts 23, 27, and 29. Compliance with this specification is not considered approval for installation on any aircraft.
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Unique Wheel and Brake Designs

A-5A Wheels, Brakes and Skid Controls Committee
  • Aerospace Standard
  • AIR5388
  • Current
Published 2017-05-04 by SAE International in United States
This SAE Aerospace Information Report (AIR) has been prepared by a panel of the SAE A-5A Committee and is presented to document unique design approaches used for aircraft wheels and brakes.
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Selection, Testing, Lubrication, and Sealing of Single Row Tapered Roller Bearings for Aerospace Wheel Applications

A-5A Wheels, Brakes and Skid Controls Committee
  • Aerospace Standard
  • AIR4403B
  • Current
Published 2017-05-04 by SAE International in United States
This SAE Aerospace Information Report (AIR) describes available technology and current aerospace industry practices used for the selection, testing, lubrication, and sealing of single row tapered roller bearings to reduce bearing damage as a problem in the aircraft industry.
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