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涡轮发动机的特征?有几个特性?

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正确答案:

发动机特性包括:转速特性、高度特性、速度特性。保持飞机高度和飞机速度不变段情况下,发动机推力和燃油消耗率随发动机转速的变化规律叫发动机转速特性。在给定的调节规律下,保持发动机的转速和飞机速度不变时,发动机的推力和燃油消耗率随飞机的高度的变化规律叫高度特性。在给定的调节规律下,保持发动机的转速和飞行高度不变时, 发动机的推力和燃油消耗量随飞机速度(或马赫数)的变化规律叫速度特性。

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