Nitrogen Absorption/Desorption (Gas Dissolution) in Aircraft Shock Absorbers
AIR6942
This document outlines the current state of the art in the understanding of gas in solution in shock absorber oils in unseperated shock absorbers. A literature review, overview of Henry's law, Henry's law coefficients for known gas and oil couples, in-service operational problems, lessons learned, and potential future work will be discussed in the document.
Rationale: Despite the fact that air (nitrogen) and mineral oil have been the two fluids used in aircraft shock absorbers for more than 50 years, the detailed behavior of gas in solution in shock absorbers is not well understood. As modern designs push aircraft and landing gears to finer margins an improved understanding of this behavior is required.
