Thrust Demonstration of a Pulse Detonation Rocket "TODOROKI"
Thrust Demonstration of a Pulse Detonation Rocket "TODOROKI"
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DOI：
10.2514/6.2007-5007
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发表时间：
2007-07
期刊：
影响因子：
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通讯作者：
J. Kasahara;Akira Hasegawa;T. Nemoto;H. Yamaguchi;T. Yajima;T. Kojima
中科院分区：
文献类型：
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作者：
J. Kasahara;Akira Hasegawa;T. Nemoto;H. Yamaguchi;T. Yajima;T. Kojima
脉冲爆震发动机（PDE）即使没有压缩机和活塞等压缩机构也能工作。具有极低燃烧室填充压力的火箭发动机成为可能（脉冲爆震火箭发动机，PDRE）。在这项研究中，低压推进剂（0.1 MPa的乙烯-氧气）填充到燃烧室，和PDRE系统，通过部分填充增加比冲的模型。此外，通过实验证实了该模型预测的性能。推力的计算采用Endo等人的简化偏微分方程模型和Sato等人的部分填充效应模型，计算中考虑了增压筒提供的推进剂质量流量。结果表明，推进剂的种类、气缸内气体的初始状态、供油阀的开孔、PDE管的容积以及工作频率等因素都可以决定发动机的推力性能。研制了一种脉冲爆震火箭（PDR）“TODOROKI”，并通过水平滑移试验验证了推力计算模型。PDR-TODOROKI具备气瓶、电磁阀、燃烧器（PDE管）、控制器等所有必要的部件，可在轨道上独立滑动。PDR-TODOROKI具有弹簧阻尼器系统，可缓解PDE管（燃烧室）端壁处的间歇脉冲推力。我们证实了PDE操作的稳定性取决于吹扫气体厚度与管径之间的比率。计算模型预测的推力与实验结果吻合度在4%以内。
Pulse detonation engine (PDE) can be operated even if there are no compression mechanisms such as compressors and pistons. The rocket engine with an extremely low combustor fill pressure becomes possible (pulse detonation rocket engine, PDRE). In this research, the low pressure propellant (ethylene-oxygen gas at 0.1 MPa) was filled to the combustor, and the PDRE system that increased the specific impulse by a partial filling was modeled. Further, the performance predicted by this model was experimentally confirmed. The thrust can be calculated by using the simplified PDE model of Endo et al. and partial filling effect models of Sato et al. The mass flow rate of the propellant supplied from the pressurized cylinders is considered in this calculation. As a result, the thrust performance can be determined by the kind of propellant, the initial conditions of the gas in the cylinders, and the supply-valve orifice and the PDE-tube volume, and the operation frequencies. We fabricated a pulse detonation rocket (PDR) named “TODOROKI”, and the thrust calculation model was verified by the horizontal sliding test of this PDR. PDR-TODOROKI has all necessary components such as the gas cylinders, electromagnetic valves, a combustor (a PDE tube), and the controller and can slide on the rails independently. PDR-TODOROKI has spring-damper system that relaxes the intermittent impulsive thrust at the end wall of the PDE tube (combustor). We confirmed that the stability of the PDE operation depends on the ratio between the purge-gas thickness and the tube diameter. The thrust predicted by the calculation model was identical to experimental results within 4%.