In-line Hydraulic Fluid Contamination Multi-Sensor

Current hydraulic fluid detectors cannot perform real-time analysis of contamination. IDI will address this problem by developing an in-line multi-sensor for monitoring particulates, water, and chlorinated solvents. An algorithm will be developed to fusethe sensor outputs and provide real-time information to maintenance staff. A key challenge will be to incorporate affordable technologies into a simple-to-operate unit that is small, lightweight and reliable. This program will focus on new and existingsensor technologies that can readily be incorporated into a sensor package with minimal development effort. Candidate sensor technologies that will be evaluated include acoustics, capacitive, and optical. During the Phase I program, IDI will develop aworking prototype that demonstrates the multi-sensor's capability in determining contamination levels in-situ. Successful feasibility tests will lead to development of a full-scale working unit in Phase II for testing by the Air Force. This system isexpected to provide real-time diagnostic information on the contamination level of hydraulic fluids at a substantial cost savings to the government. An in-line sensor would be directly applicable to the new generation ground support equipment with built-influid purifiers. The rapid, on-site capability to assure the hydraulic fluid contamination level is essential to avoid significant delays in servicing the aircraft. Another application would be direct determination of the hydraulic fluid contamination inthe aircraft when used on-board as a stand-alone device. Using an online monitor will therefore help provide better reliability and longer system life.