Research and development of the Gas Generator cycle Air-Turbo Ramjet（GG-ATR）engine for the supersonic aerospaceplane is in progress as this propulsion engine. Ball bearings of this engine will be operated under severe high-speed rotation. Therefore, the bearings produce heat by their own friction and become hot. In order to investigate the rotordynamic paign was conducted by using nitrogen / helium gas as driving gas. Heat generation and cooling characteristics of those bearings are evaluated by its temperature data and theoretical analysis result. Based on those experimental results, the issue to do are discussed concerned with the rotor-bearing system for the engine.
小型超音速機エンジン用玉軸受の発熱/冷却特性評価
TM_46_6_331_337
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