THE ROLE OF NEW DEVELOPMENT IN FLUID POWER CONTROL FOR AEROSPACE SYSTEMS

Areas of new development for fluid power control systems are discussed with particular reference to applications in aerospace systems. Results of previous developments are briefly discussed, and highlights are discussed of current work on control valves, jet amplifiers with no mechanical moving parts, pneumatic transmission lines, pneumatic networks and logic circuits, hot gas rate gyroscopes, hot gas servomotors, and complete pneumatic-mechanical control systems. Future research and development for aerospace applications of fluid power control are explored briefly, with emphasis on miniaturization, minimization of moving parts in control systems, problems with dry friction, leakage, conservation of fuel and other forms of energy, gas generation, and treatment and handling of fluids for living space and environmental controls.