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提出了一种基于碳氢燃料裂解气体驱动涡轮工作的ATR发动机方案,并对特定裂解气成分的碳氢ATR发动机性能进行计算,获得了裂解气中烷/烯比对发动机性能的影响规律。结果表明,在同一飞行条件下,随着发动机转速上升,推力逐渐上升,比冲基本呈减小趋势;在同一转速下,碳氢燃料裂解气中烷/烯比越大,发动机比冲越高。在烷/烯比4、转速百分比70%条件下,发动机比冲最高达到约7 644 m/s;随着烷/烯比逐渐升高,裂解气比热容逐渐升高。
A scheme of ATR engine based on hydrocarbon pyrolysis gas driven turbine was proposed, and the performance of hydrocarbon ATR engine with specific pyrolysis gas composition was calculated. The influence law of alkane / olefin ratio on engine performance in pyrolysis gas was obtained. The results show that under the same flight conditions, as the engine speed increases, the thrust force gradually increases and the specific impulse decreases. At the same engine speed, the higher the ratio of alkane / olefin in cracked gas, the higher engine impulse . The specific impulse of the engine reaches up to about 7 644 m / s under the conditions of an alkane / olefin ratio of 4 and a rotational speed percentage of 70%. The specific heat capacity of pyrolysis gas gradually increases with the increase of the alkane / olefin ratio.