Potential Application of Composite Materials to Future Gas Turbine Engines

Advanced engines are being designed to achieve the twin goals of increased thrust and reduced weight. The control systems for these engines will make significant contributions to both objectives. Increased control capability and advanced operating modes will contribute to higher thrust levels. The use of new lightweight materials will reduce the weight of the control system and threby contribute to the engine weight reduction As part of the Air Force sponsored Future Advanced Control Technology Study (FACTS), Pratt & Whitney, Hamilton Standard, Parker-Bertea, and Sundstrand have evaluated the viability of composite material and control component design to reduce engine control system weight. Each of the component suppliers has used P&W requirements to evaluate the benefits and shortfalls of composite materials when used in the gas turbine control environment. Study result indicate a significant weight reduction, up to 30%, when composites are used for electronic control housings, actuators, and fuel pumps. This projected benefit is tempered with requirements for electromagnetic compatibility, fluid tolerance, and ability to withstand high environmental temperatures and vibration levels.