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The purpose of this SAE Aerospace Information Report (AIR) is to provide rotorcraft and engine designers with a better understanding of turboshaft engine idle power characteristics and objectives to be considered in the design and integration process. For the purpose of this document, idle is the lowest suitable steady-state power setting, most commonly corresponding to a gas generator speed setting or range. In general, a lower engine idle setting is desired by the airframer to reduce noise, fuel consumption, and main rotor downwash when on the ground and to reduce the size requirement of a rotor brake system. In contrast, the engine manufacturer generally prefers a higher engine idle setting, as operation further away from the engine design speed involves more challenges in operability and mechanical design. A variety of rotorcraft and engine factors are described for consideration. Some typical engine power and torque trends are presented for illustrative purposes. The information
S-12 Powered Lift Propulsion Committee
This equipment specification covers requirements for airfield liquid anti-icing/deicing equipment for airfield snow removal purposes. The unit shall include a combination of a carrier vehicle, liquid product tank, and dispensing system. This vehicle as a unit shall be an integrated chemical dispensing deicing/anti-icing application system. Primary application is for the liquid chemical application for cleaning of ice and snow from airfield operational areas such as runways, taxiways, and ramp aprons. The term “carrier vehicle” represents the various self-propelled prime movers that provide the motive power necessary to move snow and ice control equipment during winter operations. The airport operator may require this specified piece of equipment in order to maintain the airfield during large and small snow events. When necessary, the airfield liquid anti-icing/deicing chemical applicator (ALAD) shall be a central and critical element in the winter pavement maintenance fleet in the
G-15 Airport Snow and Ice Control Equipment Committee
This specification provides processing and acceptance requirements for electrical discharge machining (EDM) when applied to the manufacturing of parts
AMS B Finishes Processes and Fluids Committee
This specification covers a titanium alloy in the form of bars up through 1.000 inch (25.40 mm) in diameter or least distance between parallel sides, inclusive, forgings of thickness up through 1.000 inch (25.40 mm), inclusive, high-strength fastener stock up through 1.250 inch (31.75 mm), inclusive, and stock for forging of any size (see 8.7
AMS G Titanium and Refractory Metals Committee
This specification covers a discontinuously reinforced aluminum alloy (DRA) made by mechanical alloying 2124A aluminum powder and silicon carbide (SiC) particulate. It is produced in the form of extruded bar, rod, wire, and shapes with cross section inclusive of 1-inch (25.4-mm) diameter or less (see 8.7
AMS D Nonferrous Alloys Committee
This specification covers the requirements for electroless nickel with phosphorus deposited on various materials
AMS B Finishes Processes and Fluids Committee
This Aerospace Information Report (AIR) outlines the design considerations and criteria for the control of water carryover from the environmental control system (ECS) with respect to causes and indicated corrective or preventative action. In addition, condensation on structure will be reviewed with possible preventative action described
AC-9 Aircraft Environmental Systems Committee
This specification covers metric aircraft quality spacers for use as positioners for tubes, flat washers for use as load spreaders, galling protection of adjacent surfaces and or material compatibility, and key or tab washers for use as locks for bolts, nuts, and screws
E-25 General Standards for Aerospace and Propulsion Systems
This SAE Aerospace Information Report (AIR) contains information on the thermal design requirements of airborne avionic systems used in military airborne applications. Methods are explored which are commonly used to provide thermal control of avionic systems. Both air and liquid cooled systems are discussed
AC-9 Aircraft Environmental Systems Committee
This SAE Aerospace Recommended Practice (ARP) is intended to be used as a guide for defining the methods to be used in performing electrical acceptance tests with automatic test equipment and to ensure repeatability and compatibility of results between manufacturers and between manufacturers and users
AE-7P Protective and Control Devices
This SAE Aerospace Recommended Practice (ARP) describes a method of conducting an endurance test using contaminated air when the applicable specification requires non-recirculation of the contaminants. The objective of the test is to determine the resistance of the engine mounted components to wear or damage caused by the contaminated air. The method described herein calls for non-recirculation of the contaminants and is intended to provide a uniform distribution of the contaminant at the inlet to the Unit Under Test (UUT). The UUT may require the use of a hydraulic fluid for actuation of components within the test unit. Contamination of the test hydraulic fluid is not part of this recommended practice. If contaminated hydraulic fluid is required by the applicable test specification, refer to MAP749
AC-9 Aircraft Environmental Systems Committee
This specification covers a carbon steel in the form of sheet and strip
AMS E Carbon and Low Alloy Steels Committee
This SAE Standard was developed to provide a method for indicating the direction of engine rotation and numbering of engine cylinders. The document is intended for use in designing new engines to eliminate the differences which presently exist in industry
Engine Power Test Code Committee
This SAE Aerospace Standard (AS) is intended for use by those involved in the design of aircraft, missile, or space systems, and their support equipment to define the various types of fastener torque
E-25 General Standards for Aerospace and Propulsion Systems
This specification covers three series of environment resisting, circular, miniature electrical connectors (plugs and receptacles) with removable crimp and/or nonremovable solder contacts, and accessories. The connectors are only recommended for replacement and are not specified for aircraft applications (refer to AS50881
AE-8C1 Connectors Committee
This specification covers circular threaded electrical connectors with solder or removable crimp contacts (both front and rear release). These connectors are for use in electronic, electrical power, and control circuits (see 6.1
AE-8C1 Connectors Committee
This specification covers virgin, unfilled polytetrafluoroethylene (PTFE) in the form of sheet manufactured by compression molding and sintering
AMS P Polymeric Materials Committee
This document provides guidance for ECS design for UA primarily by reference to existing applicable SAE AC-9 documents with indication of how they would apply and how they may need to be adapted for UA. This document provides guidance related to environmental control for onboard equipment, cargo, animals, and passengers. This document cannot provide detail design guidance for all potential types of UA. Limited information is available for ECS requirements for UA that may carry passengers, but it should be expected that the same comfort and safety standards would be applied to UA as prescribed in current civil aviation authority rules and military specifications. Additional requirements unique to UA can be expected for totally autonomous UA operation with no provision for flight or ground crew monitoring and intervention in the event of ECS failures or malfunctions. This document does not pertain to the related ground stations that may be controlling the UA
AC-9 Aircraft Environmental Systems Committee
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