Extensive high temperature particle rebound testing has been continuing at the Professor University of Cincinnati for the past three years utilizing the new high temperature material erosion facility. Particle rebound characteristics including particle angle Department of Aerospace Engineering and and velocity restitution ratios are important in the prediction of particle trajectories Applied Mechanics, University of Cincinnati, through a turbomachine or other flow devices where particulate erosion is presentCincinnati, OH and the prediction of erosion patterns is desired. This paper presents particle rebound data which has been accumulated for 160 microns particles impinging on INCO 718, Ti 6-4 and 2024 AL targets. Particle rebound characteristics are compared with important parameters such as target temperature, particle impingement velocity and particle impingement angle. In addition a semi-empirical erosion rate equation for INCO 718 material is derived.

One of the next steps in experimental material erosion investigation is the testing at high temperatures comparable to those found inside a jet engine. Described in this paper is the design of the high-temperature erosion facility at the University of Cincinnati. This facility has the capability of providing between ambient and a 1093°C (2000°F) environment temperature for erosion testing of various materials. In addition, this facility has the capability for varying material, specimen size, angle to the flow, particle concentration, particle size, and velocity. This facility is expected to provide basic material erosion data which will be used in predicting erosion in jet engines and other devices.

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The initial development of a nonaxisymmetric vectoring exhaust nozzle has been completed for the U. S. Navy by the General Electric Company. This exhaust system, called ADEN (Augmented Deflector Exhaust Nozzle), has been tested at GE’s Peebles, Ohio test facility using a YJ101 engine as the gas producer. This paper reviews the structural and cooling design of the ADEN nonaxisymmetric nozzle. Temperature and pressure data from the test series are compared to design intent for the nozzle operating in normal cruise and deflected (vectored) modes.