Refine Your Search

Topic

Search Results

Standard

Low Temperature Torque Test for Aircraft Greases

1955-03-01
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

Contamination Studies of Aircraft Greases

1955-03-01
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

Corrosion Preventative Characteristics of Aircraft Greases

1955-03-01
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

FINAL REPORT ON COLD STARTING OF RECIPROCATING AIRCRAFT ENGINES

1951-10-01
CURRENT
AIR13A
INTRODUCT ION Conventional internal conbustion a i r c r a f t engines require the same basic conditions for starting in cold weather as they do in warn weather. These are: (1) The engine must be cranked a t a reasonable speed. ( 2 ) A combustible mixture must be delivered t o the cylinders. (3) An ignition spark must be supplied which is capable of igniting t'ne charge a t the proper t i m e . (4) The fits and olearanoes of mating parts in the engine m u s t be such that normal Sunctions occur a t a l l temperatures. (5) The engine must receive a usable lubricant. (6) The engine must develop s u f f i c i e n t power t o overcome its own f r i c t i o n and accelerate itself t o the desired operating speed.
Standard

Load Support Characteristics of Aircraft Greases

1955-03-01
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

Stability of Aircraft Greases

1955-03-01
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

Groove Design - Metal Face Seal

1969-07-15
CURRENT
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

Washer, Thermal Compensating, Metric Series

2001-10-01
CURRENT
AIR1754A
The purpose of this document is to define: - compensation washer application requirements - recommended materials - washer thickness determination - dimensioning
Standard

Limits and Fits - International Metric Tolerance System

2018-08-09
CURRENT
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

Limits and Fits - International Metric Tolerance System

1988-01-01
HISTORICAL
AIR1758
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

WASHER, THERMAL COMPENSATING, METRIC SERIES

1983-03-31
HISTORICAL
AIR1754
The purpose of this document is to define: - compensation washer application requirements - recommended materials - washer thickness determination - dimensioning
X