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Standard

Identification and Packaging Elastomeric Products

2018-01-02
CURRENT
AMS2810H
This specification provides requirements for the identification and packaging of sheet, strip, extrusions, and molded parts made of natural rubber, synthetic rubber, reclaimed rubber, and combinations of the above with other materials such as asbestos, cork, and fabrics. AMS2817 covers preferred requirements for identification and packaging of preformed packings.
Standard

Stress Dome in Fasteners

2017-12-31
WIP
ARP953C
This document establishs limits or parameters for designing bolt heads with proper control of flowlines to assure sufficient strength to resist stresses induced by static or dynamic loads without being affected by lightening and lockwire holes.
Standard

Rings, Retaining - Spiral Wound, Uniform Section Corrosion and Heat Resistant, UNS S66286

2017-12-30
WIP
AS4299B
This procurement specification covers retaining rings of the spiral wound type with uniform rectangular cross-section, made of a corrosion and heat resistant age hardenable iron base alloy of the type identified under the Unified Numbering System as UNS S66286, work strengthened and heat treated to a tensile strength of 185 to 240 ksi at room temperature.
Standard

Powder, Hastelloy X

2017-12-28
WIP
AMS7008
1. SCOPE 1.1 Form This specification covers a corrosion and heat-resistant Hastelloy in the form of pre-alloyed powder. 1.2 Application This powder is intended to be used for the additive manufacturing of aerospace parts via a powder bed process, but usage is not limited to such applications.
Standard

Thermodynamics of Incompressible and Compressible Fluid Flow

2017-12-27
WIP
AIR1168/1A
The fluid flow treated in this section is isothermal, subsonic, and incompressible. The effects of heat addition, work on the fluid, variation in sonic velocity, and changes in elevation are neglected. An incompressible fluid is one in which a change in pressure causes no resulting change in fluid density. The assumption that liquids are incompressible introduces no appreciable error in calculations, but the assumption that a gas is incompressible introduces an error of a magnitude that is dependent on the fluid velocity and on the loss coefficient of the particular duct section or price of equipment. Fit 1A-1 shows the error in pressure drop resulting from assuming that air is incompressible. With reasonably small loss coefficients and the accuracy that is usually required in most calculations, compressible fluids may be treated as incompressible for velocities less than Mach 0.2.
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