AIR5937 Information on Electric Brakes

Reaffirmed

02/15/2019

Features
Issuing Committee
Scope
Content
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 a variety of control schemes that may be used to provide acceptable EMA performance. As a result, many of the details involved in the design of electric brake systems are proprietary or competition sensitive to the brake system OEMs. This AIR attempts to provide a basic technical overview of electric brakes without compromising any particular manufacturer's intellectual property concerns.
Rationale
Content
AIR5937 has been reaffirmed to comply with the SAE five-year review policy.
Meta TagsDetails
DOI
https://doi.org/10.4271/AIR5937
Pages
22
Citation
SAE International Information Report, Information on Electric Brakes, SAE Standard AIR5937, Reaffirmed February 2019, Issued March 2007, https://doi.org/10.4271/AIR5937.
Additional Details
Publisher
Published
Feb 15, 2019
Product Code
AIR5937
Content Type
Information Report
Status
Reaffirmed
Language
English

Revisions