Browse Topic: Aircraft propulsion systems
The purpose of this Standard is to provide installation dimensions for shaft nuts and their companion keywasher. The Standard type typically shown on MS9951 and MS9952, but is also suitable for parts which are dimensionally equivalent.
Turbine engines installed in helicopters require a highly sophisticated oil system to fulfill two primary tasks: Cooling/oil supply Lubrication of rotating components (bearings, shafts, gears, etc.) While lubrication is an engine internal operation, depending on the engine oil system configuration, cooling and oil supply may require more or less design activity on the aircraft side of the engine/airframe interface for proper engine function. The necessity for engine cooling and oil supply provisions on the airframe can lead to interface problems because the helicopter manufacturer can influence engine related functions due to the design of corresponding oil system components.
This method is designed to evaluate the coking propensity of synthetic ester-based aviation lubricants under two phase air-oil mist conditions as found in certain parts of a gas turbine engine, for instance, bearing chamber vent lines. Based on the results from round robin data in 2008 to 2009 from four laboratories, this method is currently intended to provide a comparison between lubricants as a research tool; it is not currently a satisfactory pass/fail test.
This report revises ARD50015 document to the AIR format. This report, as was the original, is intended to complement ARP1420C and AIR1419C documents issued by the SAE S-16 Committee on spatial total-pressure distortion. These previous documents addressed only total-pressure distortion and excluded total temperature distortion. The subject of inlet total temperature distortion is addressed in this report with some background and identification of the problem area. The status of past efforts is reviewed, and an attempt is made to define where we are today. Deficiencies, voids, and limitations in knowledge and test techniques for total temperature distortion are identified.
This Aerospace Standard (AS) provides the general requirements for hydraulic components that are used in military aircraft and missile hydraulic systems. NOTE: AS8775 is intended for use on aircraft that utilize military hydraulic fluids (typically MIL-PRF-83282 and MIL-PRF-87257). AS4941 should be used for those military aircraft that utilize AS1241 hydraulic fluid (for example, military derivatives of civil aircraft or some new design military cargo aircraft) instead of AS8775.
This SAE Aerospace Recommended Practice (ARP) is written for individuals associated with the ground-level testing of large and small gas turbine engines and particularly for those who might be interested in constructing new or adding to existing engine test cell facilities.
This SAE Aerospace Standard (AS) establishes the requirements for AS3504 and AS3505 thin wall self-locking inserts made from a corrosion and heat resistant, age hardenable nickel base alloy of the type identified under the Unified Numbering System as UNS N07718.
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