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Standard

Method-Pressure Drop Tests for Fuel System Components

2019-05-23
WIP
ARP868D
This document provides recommended methods and describes associated equipment and test setups to assist in understanding and conducting pressure drop tets on fuel system components. Backgroundn information and suggestions are provided as means of improving accuracy and repeatability of test results. Although written specifically for fuel system components, the methods, equipment and suggestions presented herein apply equally to pressure drop tests of other liquid-handling devices.
Standard

Plain Bearing Lined Inside Diameter Plug Gaging

2019-05-23
CURRENT
ARP5448/9B
This test method establishes a standard procedure for using plug gages to evaluate dimensional conformance of lined inside diameters of bearings. Bearings covered by this test method include sleeve bearings and lined bore spherical bearings. Note that this method gives no indication of true cylindricity.
Standard

Rolling Bearing Dynamic Radial Load Test

2019-05-23
CURRENT
ARP5483/8B
This test method outlines the recommended machine function, fixtures, and procedures used to test airframe rolling element bearings for dynamic performance under steady unidirectional radial load and oscillatory motion. Bearings covered by this test method shall be ball, roller, or needle type in either annular or rod end configuration, used in airframe control applications.
Standard

Rubber: Fluorocarbon Elastomer (FKM) 70 to 80 Hardness, Low Temperature Sealing Tg -50 °F (-46 °C) For Elastomeric Seals in Aircraft Engine Oil, Fuel and Hydraulics Systems

2019-05-21
WIP
AMS7410
1.1 Form This specification covers high temperature, compression set and fluid resistant fluorocarbon elastomer material to be used in the form of O-rings, compression seals, O-ring cord, and molded-in-place gaskets for aeronautical and aerospace applications. 1.2 Application These products have resistance to a variety of gas turbine engine oils, including high thermal stability (HTS) oils, fuels, and hydraulic fluids, but usage is not limited to such applications. Each application should be considered separately. This fluorocarbon (FKM) has a service temperature range of -65 to +400 °F (-54 to +204 °C) in air. 1.3 Safety - Hazardous Materials While the materials, methods, applications, and processes described or referenced in this specification may involve the use of hazardous materials, this specification does not address the hazards, which may be involved in such use.
Standard

Binder Jetting Process

2019-05-21
WIP
AMS7022
This specification establishes process controls for the repeatable production of aerospace parts by Binder Jetting. It is intended to be used for aerospace parts manufactured using Additive Manufacturing (AM) metal alloys, but usage is not limited to such applications.
Standard

"Startle Effect" and Crew Performance

2019-05-20
WIP
AIR7218
The scope of this AIR, "Startle Effect" and Crew Performance, includes pilots of turbine powered transport category aircraft and may also pertain to general aviation, the military, and/or other sectors of aircraft operations. It is focused on flight crews certified by the United States, however, may also pertain to crews certified by other countries. The scope describes all phases of training (initial, recurrent, upgrade, remedial, and operational) in both domestic and international flight operations, with the intent of assisting flight crews in responding to "startle effect".
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