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Effects of Water Plasma Chemistry on...

Petro, Elaine.

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Effects of Water Plasma Chemistry on Helicon Thruster Performance.

紀錄類型:	書目-電子資源 : Monograph/item
正題名/作者:	Effects of Water Plasma Chemistry on Helicon Thruster Performance./
作者:	Petro, Elaine.
出版者:	Ann Arbor : ProQuest Dissertations & Theses, : 2019,
面頁冊數:	205 p.
附註:	Source: Dissertations Abstracts International, Volume: 81-04, Section: B.
Contained By:	Dissertations Abstracts International81-04B.
標題:	Aerospace engineering. -
電子資源:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=13897969
ISBN:	9781687912534

Effects of Water Plasma Chemistry on Helicon Thruster Performance.
Petro, Elaine.

Effects of Water Plasma Chemistry on Helicon Thruster Performance. - Ann Arbor : ProQuest Dissertations & Theses, 2019 - 205 p.

Source: Dissertations Abstracts International, Volume: 81-04, Section: B.

Thesis (Ph.D.)--University of Maryland, College Park, 2019.

This item is not available from ProQuest Dissertations & Theses.

The focus of this work is on the operation of a helicon thruster with water as the propellant. The characteristics of a water plasma are investigated and used to develop an analytical thrust efficiency model for the system. The efficiency of a helicon thruster operating with water vapor is compared to the efficiency with traditional noble gas propellants. Next, the predicted efficiency range is compared with other state-of-the-art electric propulsion devices. The addition of an 'electrodeless' ion cyclotron heating stage is investigated as a means of increasing thrust efficiency. The thrust efficiency model is extended to assess the parameter space for which the addition of ion cyclotron heating improves performance. Additionally, a particle-based trajectory model is developed to study antenna sizing, phasing effects, and energy conversion. Finally, the effects of second-order reactions on plasma composition and acceleration efficiency are explored using particle balance and particle-in-cell methods.

ISBN: 9781687912534Subjects--Topical Terms:

1002622
Aerospace engineering.
Subjects--Index Terms:

Electric propulsion

Effects of Water Plasma Chemistry on Helicon Thruster Performance.
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500 $a Advisor: Sedwick, Raymond.
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506 $a This item is not available from ProQuest Dissertations & Theses.
506 $a This item must not be sold to any third party vendors.
520 $a The focus of this work is on the operation of a helicon thruster with water as the propellant. The characteristics of a water plasma are investigated and used to develop an analytical thrust efficiency model for the system. The efficiency of a helicon thruster operating with water vapor is compared to the efficiency with traditional noble gas propellants. Next, the predicted efficiency range is compared with other state-of-the-art electric propulsion devices. The addition of an 'electrodeless' ion cyclotron heating stage is investigated as a means of increasing thrust efficiency. The thrust efficiency model is extended to assess the parameter space for which the addition of ion cyclotron heating improves performance. Additionally, a particle-based trajectory model is developed to study antenna sizing, phasing effects, and energy conversion. Finally, the effects of second-order reactions on plasma composition and acceleration efficiency are explored using particle balance and particle-in-cell methods.
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650 4 $a Plasma physics. $3 3175417
653 $a Electric propulsion
653 $a Low thrust
653 $a Molecular plasma
653 $a Plasma
653 $a Spacecraft propulsion
653 $a Space missions
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