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System level Protection and Coordination in High Voltage aerospace applications

2024-04-02
WIP
ARP7159
The scope of this report is first to establish applicable definitions and general specification and terms prior to considering the application domain and use cases in HVDC applications. Then it will describe the methods of protection and system level coordination to and define different coordinated protection schemes to consider for aerospace application.
Standard

Guidelines for Characterization of Gas Turbine Engine Total-Pressure, Planar-Wave, and Total-Temperature Inlet-Flow Distortion

2024-04-02
WIP
ARP6420A
The turbine-engine-inlet flow distortion descriptors summarized in this document apply to the effects of inlet total-pressure, planar-wave, and total-temperature distortions. Guidelines on stability margin, destabilizing influences, types and purposes of inlet data, AIP definition, and data acquisition and handling are summarized from AIR5866, AIR5867, ARP1420, and AIR1419. The degree to which these recommendations are applied to a specific program should be consistent with the complexity of the inlet/engine integration. Total-pressure distortion is often the predominant destabilizing element that is encountered and is often the only type of distortion to be considered, i.e, not all types of distortion need to be considered for all vehicles.
Standard

Marine Control Cable Connection - Engine Clutch Lever

2024-04-01
WIP
J960
The purpose of this SAE Recommended Practice is to provide guides toward standard conditions for operating marine hydraulic transmissions where push-pull cable control is applicable. For control cable information see SAE J917.
Standard

Marine Control Cable Connection - Engine Throttle Lever

2024-04-01
WIP
J961
The purpose of this SAE Recommended Practice is to provide guides toward standard conditions for operating marine engine throttles (gasoline or diesel) where push-pull cable control is applicable. For control cable information see SAE J917.
Standard

Methods and Processes for Evaluation of Aerodynamic Effects of SAE-Qualified Aircraft Deicing/Anti-Icing Fluids

2024-04-01
CURRENT
ARP6852E
This ARP describes methods that are known to have been used by aircraft manufacturers to evaluate aircraft aerodynamic performance and handling effects following application of aircraft ground deicing/anti-icing fluids (“fluids”), as well as methods under development. Guidance and insight based upon those experiences are provided, including: Similarity analyses. Icing wind tunnel tests. Flight tests. CFD and other numerical analyses. This ARP also describes: The history of evaluation of the aerodynamic effects of fluids. The effects of fluids on aircraft aerodynamics. The testing for aerodynamic acceptability of fluids for SAE and regulatory qualification performed in accordance with AS5900.
Standard

Nickel Wire and Ribbon 99Ni

2024-04-01
CURRENT
AMS5555G
This specification covers a nickel in the form of round wire and rectangular ribbon.
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