Numerical Investigations of a Repetitive Pulsed MPD Thruster
Numerical Investigations of a Repetitive Pulsed MPD Thruster
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重复脉冲 MPD 推进器的数值研究
DOI：
10.1002/tee.21723
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发表时间：
2012
影响因子：
1
通讯作者：
Y.Okuno
中科院分区：
文献类型：
--
作者：
Kuo-Yuan Chu;K.Kubota;I.Funaki;Y.Okuno
对由喇叭形阳极和短阴极组成的重复脉冲自场 MPD 推进器的性能进行了数值研究。对于时均输入功率100 kW和氩气推进剂，在连续喷射推进剂和恒定放电占空比0.5的条件下，测量不同放电频率的推力和推力效率。结果表明，由于相对较高的时均电磁推力和气动推力的增加，随着放电频率的增加，重复脉冲放电操作的推力效率可提高约16%，并且可以超过50 kHz以上的连续放电操作。还表明，通过增加放电频率可以减少冻结流动损失，因为可以抑制推进剂再电离所需的输入功率。 © 2012 日本电气工程师协会。由约翰·威利父子公司出版
Performance of a repetitively pulsed self‐field MPD thruster consisting of a flared anode and a short cathode was numerically investigated. For a time‐averaged input power of 100 kW and argon propellant, thrust and thrust efficiency were surveyed for various discharge frequencies under the condition of continuous propellant injection and a constant discharge duty ratio of 0.5. The results suggest that thrust efficiency of repetitively pulsed discharge operation can be improved up to about 16% with increasing discharge frequency owing to a relatively high time‐averaged electromagnetic thrust and an increase in aerodynamic thrust, and can surpass that of continuous discharge operation above 50 kHz. It is also shown that the frozen flow loss can be reduced by increasing discharge frequency, because the input power needed for reionization of the propellant can be suppressed. © 2012 Institute of Electrical Engineers of Japan. Published by John Wiley & Sons, Inc.