碩士生: 劉勝文
畢業年月: 2021年7月
論文名稱: 真空陰極電弧誘發脈衝電漿推進器之研發 / The development of vacuum arc cathode induced pulsed plasma thruster
中文摘要:
本論文結合真空陰極電弧推進器（VAT）與脈衝式電漿推進器（PPT）的優點，提出適用於3U以下立方衛星的真空電弧誘發脈衝式電漿推進器（VAI-PPT），以處理阻礙PPT放電的碳沉積問題。研究將各項特性與參數分類並量化，以確定新組合並優化設計。結果證實VAT可取代PPT原有點火器而縮小推進器體積，聚四氟乙烯（PTFE）可兼作絕緣的介電材料與推進劑以取代石墨層，且推進器效率與電源系統的電容大小密切相關。診斷結果顯示比衝可達1,500至3,000 s，輸入能量20 J時衝量理論上可達760 μN·s。
英文摘要:
This thesis combines the vacuum cathode arc thruster (VAT) and the pulsed plasma thruster (PPT) into a hybrid vacuum arc-induced PPT (VAI-PPT) for 3U or smaller CubeSats, addressing carbon deposition that hinders PPT discharge. Characteristics and parameters were classified and quantified to define and optimize the design. The study confirms that the VAT can replace the PPT igniter and reduce thruster volume, and that polytetrafluoroethylene (PTFE) can serve as both dielectric insulator and propellant in place of the graphite layer. Thruster efficiency depends strongly on the capacitance of the power system. Diagnostics indicate a specific impulse of 1,500 to 3,000 s, and an impulse bit of up to 760 μN·s is theoretically possible at 20 J input energy.
