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Investigation of the Impact of Azimuthal Magnetic Field Gradient on the Performance Characteristics and Stability of Hall Effect Thrusters
Investigation of the Impact of Azimuthal Magnetic Field Gradient on the Performance Characteristics and Stability of Hall Effect Thrusters
상세정보
- 자료유형
- 학위논문 서양
- 최종처리일시
- 20260202105517
- ISBN
- 9798263346164
- DDC
- 500
- 저자명
- Chhavi.
- 서명/저자
- Investigation of the Impact of Azimuthal Magnetic Field Gradient on the Performance Characteristics and Stability of Hall Effect Thrusters
- 발행사항
- [Sl] : Georgia Institute of Technology, 2024
- 발행사항
- Ann Arbor : ProQuest Dissertations & Theses, 2024
- 형태사항
- 232 p
- 주기사항
- Source: Dissertations Abstracts International, Volume: 87-05, Section: B.
- 주기사항
- Advisor: Walker, Mitchell L.R.
- 학위논문주기
- Thesis (Ph.D.)--Georgia Institute of Technology, 2024.
- 초록/해제
- 요약Hall effect thrusters (HETs) are intended to function with a uniform axisymmetric magnetic field. Imperfections in the manufacturing process and electrical shorts that occur during operation might lead to the formation of non-uniformities in the channel. Azimuthal magnetic field gradients are one type of non-uniformity that can arise in the magnetic field. As a result, it is imperative to comprehend the impact of the non-uniform azimuthal magnetic field gradient on the thruster's performance. This thesis aims to quantify the alteration in thruster performance parameters, including efficiency, stability, and thrust, as a result of introducing an azimuthal magnetic field gradient. In order to achieve this, the thruster is modified to enable independent control of the outer magnetic circuit, which in turn allows the current to be adjusted. A three-dimensional sweep probe instrument was constructed to show how the azimuthal magnetic field gradient affects the thrust vector direction. The research results indicate that the azimuthal magnetic field gradient has the most significant impact on the thruster's stability, leading to increased instability during operation. The thrust and efficiency decrease as the gradient increases, with the thrust experiencing the most negligible impact. The introduction of the gradient is indicative of the thrust vector's deviation from the centerline, which leads to a three-dimensional shift in the thrust vector's position. The research offers a physics-based model to explain the observed trends in thruster performance that result from changes in the plasma parameters.
- 일반주제명
- Plasma
- 일반주제명
- Chemical bonds
- 일반주제명
- Ion beams
- 일반주제명
- Energy
- 일반주제명
- Electrons
- 일반주제명
- Electromagnetism
- 일반주제명
- Charged particles
- 일반주제명
- Magnetic fields
- 일반주제명
- Atomic physics
- 일반주제명
- Chemistry
- 일반주제명
- Electromagnetics
- 기본자료저록
- Dissertations Abstracts International. 87-05B.
- 전자적 위치 및 접속
- 로그인 후 원문을 볼 수 있습니다.
MARC
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■020 ▼a9798263346164
■035 ▼a(MiAaPQ)AAI32309393
■035 ▼a(MiAaPQ)GeorgiaTech75690
■040 ▼aMiAaPQ▼cMiAaPQ
■0820 ▼a500
■1001 ▼aChhavi.
■24510▼aInvestigation of the Impact of Azimuthal Magnetic Field Gradient on the Performance Characteristics and Stability of Hall Effect Thrusters
■260 ▼a[Sl]▼bGeorgia Institute of Technology▼c2024
■260 1▼aAnn Arbor▼bProQuest Dissertations & Theses▼c2024
■300 ▼a232 p
■500 ▼aSource: Dissertations Abstracts International, Volume: 87-05, Section: B.
■500 ▼aAdvisor: Walker, Mitchell L.R.
■5021 ▼aThesis (Ph.D.)--Georgia Institute of Technology, 2024.
■520 ▼aHall effect thrusters (HETs) are intended to function with a uniform axisymmetric magnetic field. Imperfections in the manufacturing process and electrical shorts that occur during operation might lead to the formation of non-uniformities in the channel. Azimuthal magnetic field gradients are one type of non-uniformity that can arise in the magnetic field. As a result, it is imperative to comprehend the impact of the non-uniform azimuthal magnetic field gradient on the thruster's performance. This thesis aims to quantify the alteration in thruster performance parameters, including efficiency, stability, and thrust, as a result of introducing an azimuthal magnetic field gradient. In order to achieve this, the thruster is modified to enable independent control of the outer magnetic circuit, which in turn allows the current to be adjusted. A three-dimensional sweep probe instrument was constructed to show how the azimuthal magnetic field gradient affects the thrust vector direction. The research results indicate that the azimuthal magnetic field gradient has the most significant impact on the thruster's stability, leading to increased instability during operation. The thrust and efficiency decrease as the gradient increases, with the thrust experiencing the most negligible impact. The introduction of the gradient is indicative of the thrust vector's deviation from the centerline, which leads to a three-dimensional shift in the thrust vector's position. The research offers a physics-based model to explain the observed trends in thruster performance that result from changes in the plasma parameters.
■590 ▼aSchool code: 0078.
■650 4▼aPlasma
■650 4▼aChemical bonds
■650 4▼aIon beams
■650 4▼aEnergy
■650 4▼aElectrons
■650 4▼aElectromagnetism
■650 4▼aCharged particles
■650 4▼aMagnetic fields
■650 4▼aAtomic physics
■650 4▼aChemistry
■650 4▼aElectromagnetics
■690 ▼a0791
■690 ▼a0748
■690 ▼a0485
■690 ▼a0607
■71020▼aGeorgia Institute of Technology.
■7730 ▼tDissertations Abstracts International▼g87-05B.
■790 ▼a0078
■791 ▼aPh.D.
■792 ▼a2024
■793 ▼aEnglish
■85640▼uhttp://www.riss.kr/pdu/ddodLink.do?id=T17360393▼nKERIS▼z이 자료의 원문은 한국교육학술정보원에서 제공합니다.


