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Electric Feed Systems for Liquid-Propellant Rockets

机译:液体推进火箭弹的电力供给系统

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摘要

Liquid-propellant rocket feed systems based on electric pumps are compared with the more classical pressure-gas and turbopump systems. The design parameters entering in the definition of the system mass are highlighted, and a careful choice of the figures of merit is performed, in particular for the electric motors and batteries. Indeed, recent developments, taking into account new electric motors based on rare earth permanent magnets (neodymium-iron-boron), and different lithium-based cells, show that the specific mass of the electric-pump system can be reduced to such an extent to make the proposed system competitive not only with the pressure-gas system but also with the turbopump one, at least for some applications such as small launchers and upper stage rockets. Further, electric motor and battery cell technologies currently under development could extend the proposed feed system convenience. Critical points related to electric-pump systems are also discussed.
机译:将基于电动泵的液体推进剂火箭进料系统与更为经典的压力气体和涡轮泵系统进行了比较。突出显示了输入到系统质量定义中的设计参数,并仔细选择了品质因数,特别是对于电动机和电池。实际上,考虑到基于稀土永磁体(钕铁硼)的新型电动机以及不同的锂基电池,最近的发展表明,电泵系统的比重可以降低到这种程度至少在某些应用(例如小型发射器和上级火箭)中,使拟议的系统不仅具有压力气体系统的竞争力,而且还具有涡轮泵的竞争力。此外,当前正在开发的电动机和电池单元技术可以扩展提议的馈电系统便利性。还讨论了与电泵系统有关的关键点。

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  • 来源
    《Journal of propulsion and power》 |2013年第5期|1171-1180|共10页
  • 作者单位

    Universidad de Buenos Aires, 1063 Buenos Aires, Argentina Laboratorio de Control de Accionamientos, Traccion y Potencia, Departamento de Electronica, F.I.U.B.A., Paseo Colon 850;

    Universidad de Buenos Aires, 1063 Buenos Aires, Argentina Laboratorio de Control de Accionamientos, Traccion y Potencia, Departamento de Electronica, F.I.U.B.A., Paseo Colon 850;

    Sapienza Universita di Roma, 00184 Rome, Italy Dipartimento di Ingegneria Meccanica e Aerospaziale, Via Eudossiana 18;

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