ASTM-E3188 › Standard Terminology for Aircraft Braking Performance
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1.1 The terms and definitions listed provide a common set of definitions and concepts that have been agreed upon by the Society of Aircraft Performance and Operations Engineers. While historical reports and studies may use different terms, all concepts should be relatable to the definitions listed.
1.2 Several discussion sections are included to provide context. The definitions and discussions serve to formally capture industry best practices and common methods that relate to aircraft certification, aircraft operation, and airport operations under standard FAA and ICAO guidance.
1.3 Units—The values stated in SI units are to be regarded as standard. There are no SI units used in these definitions. New values relating to braking coefficients are described below.
1.4 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use.
1.5 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
Significance and Use
3.1 The terminology listed below allows for standardized and specific language to be given to concepts surrounding the identification of, recording, and communication of vehicle wheel braking. The terms are designed to specifically allow manufacturers, operators, regulators, research agencies, and investigative agencies the ability to communicate essential concepts in a manner that can be directly applied to operational requirements.
aircraft; anti-skid; braking coefficient; friction; MU; SAPOE; slip ratio;; ICS Number Code 01.040.49 (Aircraft and space vehicle engineering (Vocabularies)); 49.045 (Structure and structure elements)
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Feb. 1, 2019