Measurement of transient neutral gas puff pressure in the NUDT_IPPTx by a fast ionization gauge

Dawei GUO (郭大伟); Mousen CHENG (程谋森); Xiaokang LI (李小康); Bixuan CHE (车碧轩); Xiong YANG (杨雄); Moge WANG (王墨戈)

doi:10.1088/2058-6272/aade84

Plasma Science and Technology > 2018 > 20(12): 125506. > DOI: 10.1088/2058-6272/aade84

Dawei GUO (郭大伟), Mousen CHENG (程谋森), Xiaokang LI (李小康), Bixuan CHE (车碧轩), Xiong YANG (杨雄), Moge WANG (王墨戈). Measurement of transient neutral gas puff pressure in the NUDT_IPPTx by a fast ionization gauge[J]. Plasma Science and Technology, 2018, 20(12): 125506. DOI: 10.1088/2058-6272/aade84

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Measurement of transient neutral gas puff pressure in the NUDT_IPPTx by a fast ionization gauge

College of Aerospace Science and Engineering, National University of Defense Technology, Changsha 410073, People’s Republic of China

Funds: This work is supported by National Natural Science Foundation of China (No. 51306203), and the Natural Science Foundation of Hunan Province (No. 2018JJ3592).

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Received Date: June 24, 2018

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Abstract

Abstract

A gas injector was designed for the 400 J/pulse prototype of the planar inductive pulsed plasma thruster (IPPT) developed by the National University of Defense Technology (NUDT_IPPTx). As the gas puff distribution over the coil surface is critical to the NUDT_IPPTx functioning efficiently, a fast ionization gauge was developed to investigate the neutral gas pressure profiles to seek the critical time when the thruster is ignited. The gauge was calibrated for argon by using a capacitance manometer. Time-resolved pressure profiles have been acquired in the condition of the gas puff mass matching with the discharge energy and the drive coil parameters of the NUDT_IPPTx. It is demonstrated that the gas injector can supply a gas puff with a sufficiently steep (d_p/d_t≈ 770 kPa s^-1 ) leading and trailing edge, and the gas puff can be compressed against the drive coil as expected. The critical ignition moment is considered to appear at some instant between 525 μs and 650μs after the valve trigger.
- inductive pulsed plasma thruster,
- gas injection,
- fast ionization gauge,
- fast pulsed valve,
- neutral gas pressure

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References (20)

References

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