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Method for making measurements of the post-combustion residence time in a gas turbine engine
Method for making measurements of the post-combustion residence time in a gas turbine engine
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机译:测量燃气涡轮发动机中燃烧后停留时间的方法
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摘要
A method of measuring a residence time in a gas-turbine engine is disclosed that includes measuring a combustor pressure signal at a combustor entrance and a turbine exit pressure signal at a turbine exit. The method further includes computing a cross-spectrum function between the combustor pressure signal and the turbine exit pressure signal, calculating a slope of the cross-spectrum function, shifting the turbine exit pressure signal an amount corresponding to a time delay between the measurement of the combustor pressure signal and the turbine exit pressure signal, and recalculating the slope of the cross-spectrum function until the slope reaches zero.
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