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Applied Physics A

, 122:511 | Cite as

Effect of nozzle geometry on the performance of laser ablative propulsion thruster

  • Long LiEmail author
  • Long Jiao
  • Zhiping Tang
  • Xiaojun Hu
  • Jie Peng
Article
  • 199 Downloads

Abstract

The performance of “ablation mode” laser propulsion thrusters can be improved obviously by nozzle constraint. The nozzle geometry of “ablation mode” laser propulsion thrusters has been studied experimentally with CO2 lasers. Experimental results indicate that the propulsion performance of cylindrical nozzle thrusters is better than expansionary nozzle thrusters at the same lengths. The cylindrical nozzle thrusters were optimized by different laser energies. The results show that two important factors, the length-to-diameter ratio α and the thruster diameter to laser-spot diameter ratio β, affect the propulsion performance of the thruster obviously. The momentum coupling coefficient C m increases with the increase of α, while C m increases at first and then decreases with the increase of β.

Keywords

Pulse Waveform Nozzle Geometry Propulsion Performance Cylindrical Nozzle Nozzle Structure 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

Notes

Acknowledgments

This research was supported by the National Natural Science Foundation of China (Grant Nos.: 11302221 and 51374189) and the Natural Science Foundation of Jiangsu Province (Grant No.: BK20151482).

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Copyright information

© Springer-Verlag Berlin Heidelberg 2016

Authors and Affiliations

  • Long Li
    • 1
    Email author
  • Long Jiao
    • 2
  • Zhiping Tang
    • 2
  • Xiaojun Hu
    • 2
  • Jie Peng
    • 2
  1. 1.National Key Laboratory of Transient PhysicsNanjing University of Science and TechnologyNanjingChina
  2. 2.CAS Key Laboratory of Mechanical Behavior and Design of Materials (LMBD)University of Science and Technology of ChinaHefeiChina

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