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.

What Will You Learn

By attending this seminar, you will be able to:
  • Describe the general properties and components of a fluid
  • Interpret a fluid specification or report
  • Identify key performance advantages and disadvantages for different fluid types
  • Explain fluid degradation processes

Course Requirements

This data is not available at this time

Topics

Topical Outline for Half Day:
  • Fundamentals of fluid lubricants
    • Basic physical properties
    • Functions of a lubricant
    • General lubricant compositions
    • Basic lubricant rheology and tribology
  • Aviation hydraulic fluids
    • Fluid development process
    • General qualification procedures
    • Types of aviation lubricants
  • Hydrocarbon hydraulic fluids
    • History and applications
    • Key specifications and products
    • Performance advantages and disadvantages
    • Failure modes
  • Phosphate ester hydraulic fluids
    • History and applications
    • Key specifications and products
    • Performance advantages and disadvantages
    • Failure modes, including erosion
  • Silicon-based hydraulic fluids
    • History and applications
    • Key products
    • Performance advantages and disadvantages
    • Failure modes
  • Oil degradation and used oil analysis
    • Chemical kinetics of degradation
    • Key used oïl tests and their significance