2.5 kN pump-pressure pintle engine ignition experiment in different loading cases

Yu, Nanjia; Zhou, Chuang; Cai, Guobiao; Wang, Jue

doi:10.1016/j.ast.2022.107732

Cited by 5 publications

(2 citation statements)

References 48 publications

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“…Each propellant pump is individually driven by a brushless DC motor featuring a speed of 40000 r/min and power of 37 kW. Since 2020, Beihang University, together with Guizhou Aerospace Linquan Motor, has developed several canned motor pumps for hydrogen peroxide and kerosene, with speeds up to 36000 r/min and power up to 75 kW [6][7][8][9][10]. The pumps were applied to feed systems for both liquid rocket engines and hybrid rocket motors, and firing tests have been successfully performed.…”

Section: Introductionmentioning

confidence: 99%

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Experimental study on the internal temperature rise of a high-speed canned motor pump for liquid rocket engines

Wang,

Cai,

et al. 2024

J. Phys.: Conf. Ser.

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High-speed electric pumps are now gradually applied in liquid rocket engines. Compared with the pumps with dynamic seals, the canned motor pumps are more reliable, and thus suitable for delivering risky propellants. However, the partial flow diverted to the air-gap for cooling and lubrication faces the risk of overheating caused by its friction against the rotor. This paper performed an experiment on this issue with a high-speed canned motor pump for a notional rocket engine. Impellers with and without balance holes, as well as different configurations of jet holes, were adopted and their effects were analysed. Results showed that the internal temperature rise decreased by up to 78% when the balance holes were removed, and decreased by up to 40% when the jet hole configuration was modified. Both factors influenced the internal temperature rise by varying the flow rate of the cooling recirculation. The study suggested that the high-speed canned motor pump should be designed with an appropriate flow rate of the cooling recirculation, so as to control the temperature rise of the propellant and ensure safe operation of the rocket engine.

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Section: Introductionmentioning

confidence: 99%

“…Among the above application of electric pumps, canned motor pumps were adopted in some of the cases, i.e., in ref. [3,4,[6][7][8][9][10]. Owing to elimination of dynamic seals, canned motor pumps are more reliable and compact and thus suitable for delivering risky or hazardous propellants in rocket engines.…”

Section: Introductionmentioning

confidence: 99%