TS-26 Double Oblique Shock Airfoil in High Speed Axial-Flow Compressors(Session B-1: Cascade Design 1)

概要

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Research and development program of Advanced Material Gas-Generator was commenced by a joint investment from Japanese Governmental Organization and fourteen Japanese companies in 1993. The future high-speed compressor of Advanced Material Gas-Generator requires highly advanced technology to achieve higher efficiency. The mechanical tip speed of the first stage rotor blades applied by Metal Matrix Composite is expected to be more than 650m/s. This high-speed rotor brings a technology problem of increasing shock loss. Therefore it is necessary for the high speed compressor of Advanced Material Gas-Generator to reduce shock loss. The design of rotor blades, to which double oblique shock structure was applied to reduce shock loss, was carried out using 3D Navier-Stokes code. A single stage compressor rig test was conducted to evaluate double oblique shock structure. The shock structure was measured by pressure transducers installed in the outer casing wall, and the performance of the rotor blades was evaluated by traversing probes. The double oblique shock structure was obtained to achieve 91% polytropic efficiency in the rotor blades. This paper presents the aerodynamic design and the test results of the single stage compressor.
公益社団法人日本ガスタービン学会の論文
1999-11-14