In-Line Electro-Sieve Oil Debris Analyzer

To address the Army need for nonmetallic/metallic oil debris monitoring sensors for use on rotorcraft transmissions and turboshaft engines, Physical Optics Corporation (POC) proposes to develop a new in line Electro-Sieve Oil Debris Analyzer (ESODA). ESODA is based on an innovative sensor concept using dielectric properties to reliably identify the debris material. The three dimensional (3D) size measurements are precisely performed by a 3D electrical sieve with different mesh sizes. The novel use of an oil centrifuge inlet dramatically increases sensor sensitivity by directing debris into the sensor electrical field. As a result, ESODA offers reliable monitoring for both nonmetallic and metallic debris and supports improved aircraft safety and scheduling of oil samples based on indicated need versus time usage which are objectives for PEO Aviation. In Phase I, POC will demonstrate the feasibility of the ESODA prototype, accurately identifying material and measuring 3D sizes of specially prepared debris in a turbine engine oil sample. The Phase I prototype will be tested in an oil debris sensor flow test rig. In Phase II, POC plans to develop the full-scale device to demonstrate ESODA operation in a relevant environment, integrating with the aircraft’s Health and Usage Monitoring Systems to predict bearing health.