Rotating machinery is at the heart of the modern world. Almost any time there is energy being produced, consumed, or transmitted, there is a rotating machine involved somewhere. Pumps, turbines, fans, compressors, gas turbine engines, etc., all involve a rotating shaft. And, if the shaft does not spin reliably, even the best aerodynamic, electromagnetic or hydrodynamic performance won't make the user happy.
Research & Development
Xdot is much more than just another rotordynamics consultant. We also have strong research and development efforts related to a variety of rotordynamic, bearing, and high speed machinery topics. These projects blend of improving our ability to address today's consulting needs, with developing technology and capabilities for tomorrow's problems.
High speed and oil-free turbomachinery have demanding requirements for bearings. For a number of high speed machines up to about 1 MW, compliant gas bearings ("Foil Bearings") are the best choice. These oil-free bearings offer essentially unlimited speed capability, operation from cryogenic to 1200+ F, and significantly better dynamic performance than rigid pad air bearings.