Performance enhancement of ammonium dinitramide (ADN)-based thruster using coaxial dielectric barrier discharge

IF 5 1区工程技术 Q1 ENGINEERING, AEROSPACE

Aerospace Science and Technology Pub Date : 2024-11-22 DOI:10.1016/j.ast.2024.109769

Fangyi Wang , Gongxi Zhou , Yuhong Deng , Shaohua Zhang , Xilong Yu

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Abstract

To enhance the performance of conventional ADN-based catalytic ignition thrusters, a plasma-assisted thruster was developed employing coaxial cylinder electrodes within a 1N-class thruster configuration. Steady-state ignition tests conducted on the experimental bench, demonstrated high repeatability in an atmospheric environment. High-speed imaging and proper orthogonal decomposition (POD) analysis revealed that plasma reduced the pulsation energy of the first mode from 84.96% to 75.21%, improving flame stability and concentrating the flame in the upstream part of the combustion chamber, without propagating toward the nozzle. Experimental evolution spectra of H₂O, NH₃, and CO₂ were obtained through near-infrared (NIR) and mid-infrared (MIR) spectrometers to probe chemical dynamics. The peak radiation intensity of H₂O and NH₃ in the 1.6-2.4 μm range was observed to precede by about one second with plasma compared to the catalyst-only case. An increased radiation intensity ratio of H₂O/NH₃ in the presence of plasma indicated plasma's promotion of H₂O production and NH₃ consumption. Furthermore, the radiation intensity of CO₂ increased by approximately 100-fold in the plasma-assisted case, indicating accelerated chemical reactions and more complete combustion. These findings highlight the potential of plasma-assisted technologies to improve the efficiency of ionic liquid-based thrusters and provide a foundation for future advancements in plasma-assisted propulsion systems.

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同轴介质阻挡放电增强二硝酰胺铵基推力器性能

为了提高传统的基于adn的催化点火推进器的性能，在1n级推进器结构中，采用同轴圆柱形电极设计了一种等离子体辅助推进器。在实验台上进行了稳态点火试验，证明了在大气环境下的高重复性。高速成像和适当的正交分解（POD）分析表明，等离子体将第一模态的脉动能量从84.96%降低到75.21%，提高了火焰的稳定性，使火焰集中在燃烧室的上游，而没有向喷嘴传播。通过近红外（NIR）和中红外（MIR）光谱仪获得H2O、NH3和CO2的实验演化光谱，探测其化学动力学。在等离子体中，H2O和NH3在1.6 ~ 2.4 μm范围内的峰值辐射强度比仅使用催化剂的情况提前了约1秒。等离子体存在时，H2O/NH3辐射强度比增大，表明等离子体促进了H2O的生成和NH3的消耗。此外，在等离子体辅助的情况下，CO2的辐射强度增加了大约100倍，表明化学反应加速，燃烧更完全。这些发现突出了等离子体辅助技术在提高离子液体推进器效率方面的潜力，并为等离子体辅助推进系统的未来发展奠定了基础。

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来源期刊

Aerospace Science and Technology 工程技术-工程：宇航

CiteScore

10.30

自引率

28.60%

发文量

654

审稿时长

54 days

期刊介绍： Aerospace Science and Technology publishes articles of outstanding scientific quality. Each article is reviewed by two referees. The journal welcomes papers from a wide range of countries. This journal publishes original papers, review articles and short communications related to all fields of aerospace research, fundamental and applied, potential applications of which are clearly related to: • The design and the manufacture of aircraft, helicopters, missiles, launchers and satellites • The control of their environment • The study of various systems they are involved in, as supports or as targets. Authors are invited to submit papers on new advances in the following topics to aerospace applications: • Fluid dynamics • Energetics and propulsion • Materials and structures • Flight mechanics • Navigation, guidance and control • Acoustics • Optics • Electromagnetism and radar • Signal and image processing • Information processing • Data fusion • Decision aid • Human behaviour • Robotics and intelligent systems • Complex system engineering. Etc.