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Fuels and Energy Sources E-25 General Standards for Aerospace and Propulsion Systems Chassis

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Standard

Stability of Aircraft Greases
1995-05-01
CURRENT
AIR41
The purpose of this information report is to summarize and document data regarding possible alternatives to the use of cadmium plating on hardware typical of the aerospace hose and fitting industry. To document and provide access to information obtained by an industry survey.
Standard

Corrosion Preventative Characteristics of Aircraft Greases
1995-05-01
CURRENT
AIR40
The objective of this work was to develop a relatively simple screening or bench test, or a combination of such tests, which would evaluate aircraft greases in respect to corrosion protection under the operating conditions described above.
Standard

Contamination Studies of Aircraft Greases
1995-05-01
CURRENT
AIR42
Certain techniques involved in determining the dirt or abrasive content of aircraft greases are considered inadequate. It is desirable to develop a method of analysis which will definitely identify the quantity, size, and degree of abrasiveness of foreign substances in lubricating greases.
Standard

Low Temperature Torque Test for Aircraft Greases
1995-05-01
CURRENT
AIR43
The objective of this investigation was to develop a test method for measuring the resistance to rotation of a ball bearing, caused by the grease in that bearing, as a function of temperature. Low temperatures were of particular interest, and it was desired that the test results be expressed in terms which could be used in mechanism design by proper correction for bearing size, etc. It was also desired that the method be capable of measuring 'break away' as well as the running torque of a bearing filled with grease.
Standard

Load Support Characteristics of Aircraft Greases
1995-05-01
CURRENT
AIR44
The objective of this work was to develop a relatively simple bench test or performance test, or a combination of tests, which would be valid for evaluating greases in respect to load support characteristics, when the greases were used in journal bearings or in actuator-type mechanisms.
Standard

Groove Design - Metal Face Seal
2013-10-28
HISTORICAL
AIR1108
Groove designs presented herein are applicable for use with machined or formed metal seals which are similar in configuration to those shown in figure 3, which operate under internal pressure or in vacuum service and which have been specifically qualified or recommended by the purchaser or the manufacturer for use with this AIR. They are also applicable for use with metal o-rings (e.g., MS9142, MS202 thru MS9205) where interchangeability with machined or formed metal seals is desired. For metal o-ring groove designs where inter-changeability is not a requirement refer to ARP 674.
Standard

Groove Design - Metal Face Seal
2019-06-06
CURRENT
AIR1108A
Groove designs presented herein are applicable for use with machined or formed metal seals which are similar in configuration to those shown in figure 3, which operate under internal pressure or in vacuum service and which have been specifically qualified or recommended by the purchaser or the manufacturer for use with this AIR. They are also applicable for use with metal o-rings (e.g., MS9142, MS202 thru MS9205) where interchangeability with machined or formed metal seals is desired. For metal o-ring groove designs where inter-changeability is not a requirement refer to ARP 674.
Standard

Limits, Table of Limits and Lubrication Charts
2018-09-11
CURRENT
AS176D
This specification covers the requirements for the preparation of Limits, Table of Limits and Lubrication Charts in published form for service and production use.
Standard

Limits, Table of Limits and Lubrication Charts
2012-11-01
HISTORICAL
AS176C
This specification covers the requirements for the preparation of Limits, Table of Limits and Lubrication Charts in published form for service and production use.
Standard

OPERATING INSTRUCTIONS FOR AIRCRAFT ENGINES
1944-05-01
HISTORICAL
AS177
This specification covers the requirements for the preparation of Operating Instructions in published form or in manuscript form suitable for publication as designated herein.
Standard

LIMITS, TABLE OF LIMITS, AND LUBRICATION CHARTS
1995-05-01
HISTORICAL
AS176B
This specification covers the requirements for the preparation of Limits, Table of Limits and Lubrication Charts in published form for service and production use.
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