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Training / Education

Fluids for Aerospace Hydraulic Systems

This four-hour short course provides an introduction to fluids for aerospace hydraulic systems. Topics covered include an introduction to basics fluid properties, rheology, tribology, and fluid product development. In addition, the history and performance of different classes of fluids are discussed in detail, and specific failure modes such as erosion and sludge formation will be described. Along with an introduction to fluid degradation, information on used oil analysis test methods and interpretation will be provided.
Training / Education

Filtration and Contamination Control for Aerospace Hydraulic Systems

This four-hour short course provides an introduction to contamination control principles in aircraft hydraulic systems. Topics covered include an introduction to the types of contamination in aircraft hydraulic systems, contaminant measurement, and reporting methods. In addition, the impact of contamination on hydraulic components is discussed in detail. Along with an introduction to filtration mechanisms, information on testing, rating, and specifying filters will be provided.
Standard

Seals and Wipers for Mechanical and Electromechanical Actuators

2021-04-29
WIP
AIR7379
The purpose of this AIR is to provide a comprehensive description document that displays various examples of low pressure seals and wipers utilized within mechanical and electromechanical actuators. The document is intended as an overview for those specifying or designing actuators in order to compare existing solutions as reference for implementation.
Standard

Skew and Disconnect Detection in High Lift Systems

2021-09-09
WIP
ARP5775
The document provides a definition of skew and disconnect occuring in high lift systems in flight controls including their hazard assessment, describes generic solutions and provides a for specifying requirements.
Standard

Design and Test Recommendations for Dielectric Strength and Insulation Resistance for Line Replaceable Units

2021-04-26
WIP
ARP5769
Scope: This Aerospace Recommended Practice (ARP) provides guidelines for specifying dielectric withstanding strength and insulation resistance design and test requirements for aircraft line replaceable units (LRU's) used within a flight control and/or a utility system. 1.1 Purpose The testing is intended to verify that an LRU can operate safely at its rated voltage and withstand momentary over potentials due to switching, troubleshooting testing, surges, etc.. The testing is also intended to verify adequate design margin of the insulation system and detect workmanship problems.
Standard

Aerospace - Valves, Shuttle, Hydraulic, Aircraft & Missile

2020-02-27
WIP
ARP4987
This SAE Aerospace Recommended Practice (ARP) is intended as a guide to define the requirements for aerospace hydraulic shuttle valves, including details pertinent to the design, performance, fabrication, and testing of the shuttle valves.
Standard

Recommended Design and Test Requirements for Hydraulic Priority Valves

2022-03-28
WIP
ARP7125
1. SCOPE This Aerospace Recommended Practice (ARP) provides recommendations for the design and test requirements for hydraulic priority valves. The hydraulic priority valve is intended for use in a civil or a military aircraft hydraulic system with a rated system pressure up to 5000 psi (34500 kPa). 1.1 Purpose The recommended requirements contained in this document are compiled for inclusion in a Procurement Specification for a hydraulic priority valve. NOTE: The recommended requirements in this ARP should be reviewed by the Purchaser or the Contractor and only those requirements that are applicable for a specific application should be incorporated in the Procurement Specification. 1.2 Classification The hydraulic priority valve types covered by this ARP are: • The line-mounted type - a valve with standard fitting ends • The cartridge type - a cylindrical valve with O-ring glands for mounting in a manifold, for example
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