Analysis of data correlation between impulse and continuous combustion heated facilities
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摘要: 燃烧加热风洞是目前开展超燃冲压发动机地面模拟试验的主要设备。燃烧加热风洞的试验时间（脉冲式和连续式）及燃烧方式（氢-氧燃烧、碳氢-氧燃烧）均会对发动机试验结果产生一定影响。研究了氢-氧燃烧脉冲风洞与氢-氧燃烧连续风洞、酒精-氧气燃烧连续风洞的数据相关性。研究表明：对于同为氢-氧燃烧的脉冲风洞和连续风洞，在相同试验状态下，发动机推进流道压力系数分布规律一致，连续风洞试验的燃烧室压力高于脉冲风洞试验值，连续风洞的发动机推力收益比脉冲风洞高10%左右；对于氢-氧燃烧脉冲风洞和酒精-氧气燃烧连续风洞，发动机推进流道压力系数分布规律一致，连续风洞试验的燃烧室压力高于脉冲风洞试验值，连续风洞的发动机推力收益比脉冲风洞高5%左右。Abstract: The comparison tests of impulse and continuous combustion heated facilities were conducted. For Hydrogen-Oxygen combustion heated impulse and continuous facilities, the pressure coefficient distributions of the engine flow path were coincident but the engine thrust gain in continuous facility was 10% larger than that in the impulse facility. For Hydrogen-Oxygen combustion heated impulse facility and Alcohol-Oxygen combustion heated continuous facility, the pressure coefficient distributions of the engine flow path were coincident but the engine thrust gain in continuous facility was 5% larger than that in the impulse facility.
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图 1 Ma=5.5、α=2.5°压力系数分布
Figure 1. Pressure coefficient distribution at Ma=5.5 and α=2.5°
图 2 Ma=5.5、α=4.5°压力系数分布
Figure 2. Pressure coefficient distribution at Ma=5.5 and α=4.5°
图 3 Ma=5.5、α=6.5°压力系数分布
Figure 3. Pressure coefficient distribution at Ma=5.5 and α=6.5°
图 5 Ma=6.0、α=2.5°压力系数分布
Figure 5. Pressure coefficient distribution at Ma=6.0 and α=2.5°
图 6 Ma=6.0、α=4.5°压力系数分布
Figure 6. Pressure coefficient distribution at Ma=6.0 and α=4.5°
图 7 Ma=6.0、α=6.5°压力系数分布
Figure 7. Pressure coefficient distribution at Ma=6.0 and α=6.5°
图 9 Ma=6.5、α=2.5°压力系数分布
Figure 9. Pressure coefficient distribution at Ma=6.5 and α=2.5°
图 10 Ma=6.5、α=4.5°压力系数分布
Figure 10. Pressure coefficient distribution at Ma=6.5 and α=4.5°
图 11 Ma=6.5、α=6.5°压力系数分布
Figure 11. Pressure coefficient distribution at Ma=6.5 and α=6.5°
图 13 Ma=6.0压力系数分布对比曲线
Figure 13. Comparison of pressure coefficient distribution at Ma=6.0
表 1 对比试验参数
Table 1. Comparison test parameters
Ma H/km T0/K p0/MPa q/kPa 5.5 26 1350 2.5 43.1 6.0 27 1550 4.0 46.9 6.5 28 1700 6.2 47.1 
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