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Standard

Limits and Fits - International Metric Tolerance System

2018-06-22
WIP
AIR1758A
This information report provides Guidance when the ISO International metric tolerance system for limits and fits per ISO/R286 or ANSI B4.2-1978 is applied on a standard, and also provides a selected series of limits and fits for powerplant construction suitable for holes and shafts up to 500 mm. For holes or shafts over 500 mm or for limits and fits not shown, ISO/R286 should be consulted.
Standard

Horsepower Correction Formulae

2018-06-22
WIP
ARP2C
This document discusses formulae considered applicable to aircraft engines having integral supercharging without aftercooling, and using gasoline introduced at the entrance to the supercharger or directly into the cylinders. Such engines are normaally designated as single and two speed engines. Correction formulae for engines having two stage or exhaust turbo supercharging will not be discussed. Corrections for engines having a high degree of integral supercharging will be discussed in general terms only and no specific formulae will be presented. The correction formulae and methods listed are empirical and subject to error due to conditions beyond the scope of known corrections. Usage has indicated, however, that the correction formulae listed will provide a satisfactory approximation of power output under standard conditions.
Standard

Identification of Material for AN, MS, and AS Engine and Propeller Standard Utility Parts and Also for Company Parts

2018-06-22
WIP
AS269J
This SAE Aerospace Standard (AS) provides material identification codes for aluminum alloys, copper alloys, carbon steels, alloy steels, titanium alloys, corrosion resistant materials, and heat resistant materials that are used to make AN, MS, and AS engine and propeller standard utility parts. This document also provides similar material codes for company parts (such as nuts, bolts, etc.) having design configuration similar to other company parts or the engine and propeller standard utility parts (AN, MS, and AS) that are not of the same material.
Standard

Groove Design, Metal C-Ring Gasket, Face Type, Internal Pressure, Metric

2018-06-22
WIP
MA2537A
This standard provides the design criteria for static metal c-ring gasket applications, face type (axial compression) groove dimensions for aerospace metric c-ring sizes specified in MA2536. Primarily for aerospace propulsion system applications where internally pressurized face type metal c-ring gaskets are required for sealing fluids at temperatures that precludes the use of elastomeric seals. A table of c-ring groove dimensions are included based on the design criteria specified herein. Dimensions in this document are in millimeters, unless otherwise specified.
Standard

Plating, Nickel-Cadmium Diffused

2018-06-21
CURRENT
AMS2416M
This specification covers the requirements for an electrodeposit of cadmium diffused into an electrodeposit of nickel on carbon, low-alloy, and corrosion-resistant steels.
Standard

Overpressurization Release Devices

2018-06-21
CURRENT
ARP1322C
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.
Standard

Coiled Tubing – Titanium Alloy, Hydraulic Applications, Aerospace

2018-06-21
CURRENT
ARP4146D
This SAE Aerospace Recommended Practice (ARP) addresses the design, installation, and testing of coiled tube assemblies using Ti-3Al-2.5V cold worked, stress relieved (CWSR) tubing per AMS4945. It specifically details five different configurations of coiled tubing. The configurations detailed herein should be compatible with pressure levels up to 8000 psi (55.2 MPa) upon completion of analysis for the actual stress and life requirement of the intended application. <

Formal qualification tests are recommended to verify satisfactory installation, clamping, and the life of each unique design. NOTE: For information on design of coiled tube assemblies using CRES steel tubing, see ARP584.

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