California State University, Northridge WordmarkOviatt Library WordmarkOviatt Library Catalog Wordmark
Author Reed, Garrett Donald, author.
Title Emiim wetting properties & their effect on electrospray thruster design / By Garrett Donald Reed.
Published [Northridge, California] : California State University, Northridge, 2012.

 Electronic Book  TA153 .Z954 2012 R44eb    ONLINE
Description 1 online resource (xiv, 56 pages) : illustrations, color.
Content Type text
still image
Format online resource
File Characteristics text file PDF
Thesis M.S. California State University, Northridge 2012.
Bibliography Includes bibliographical references (pages 54-56).
Summary Recent advances in the development of highly conductive ionic liquids have made them of interest for use as propellant in spacecraft propulsion systems. Electrospray thrusters apply strong electrostatic fields to an ionic liquid in order to extract and accelerate charged particles, producing thrust. The behavior of these ionic liquids as they pass through the components of an electrospray system can have a significant effect on thruster operation. The wetting and adhesion behavior between the ionic liquid propellant and solid materials can be characterized using the surface tension and contact or "wetting" angle. Ideally this angle is a function of the interactions between the solids surface energy, the "free" surface energy or tension of the liquid and the interactions of both with the surrounding medium. Deviation from ideal contact angle behavior can indicate surface inconsistencies, environmental effects or contamination of the solid or liquid. Contact angle and surface tension measurements are presented for the ionic liquid propellant 1-Ethyl-3-methylimidazolium bis(trifluoromethylsulfonyl)imide, called EMIIm or EtMeImTf2N, with respect to various substrate materials and environmental conditions. Analysis of these measurements determines optimum materials and operating conditions for current and future electrospray thruster designs.
Note Description based on online resource; title from PDF title page (viewed on June 01, 2012).
Subject Electric propulsion.
Liquid propellants.
Local Subject Dissertations, Academic -- CSUN -- Engineering -- Mechanical.
OCLC number 847759469