NASA Logo, External Link
Facebook icon, External Link to NASA STI page on Facebook Twitter icon, External Link to NASA STI on Twitter YouTube icon, External Link to NASA STI Channel on YouTube RSS icon, External Link to New NASA STI RSS Feed AddThis share icon
 

Record Details

Record 1 of 4976
Electrostatic Plasma Accelerator (EPA)
Offline Availability: Go to Request Form
Author and Affiliation:
Brophy, John R.(Electric Propulsion Lab., Inc., Lancaster, CA United States)
Aston, Graeme(Electric Propulsion Lab., Inc., Lancaster, CA United States)
Abstract: The Electrostatic Plasma Accelerator (EPA) is a thruster concept which promises specific impulse levels between low power arcjets and those of the ion engine while retaining the relative simplicity of the arcjet. The EPA thruster produces thrust through the electrostatic acceleration of a moderately dense plasma. No accelerating electrodes are used and the specific impulse is a direct function of the applied discharge voltage and the propellant atomic mass. The goal of the present program is to demonstrate feasibility of the EPA thruster concept through experimental and theoretical investigations of the EPA acceleration mechanism and discharge chamber performance. Experimental investigations will include operating the test bed ion (TBI) engine as an EPA thruster and parametrically varying the thruster geometry and operating conditions to quantify the electrostatic plasma acceleration effect. The theoretical investigations will include the development of a discharge chamber model which describes the relationships between the engine size, plasma properties, and overall performance. For the EPA thruster to be a viable propulsion concept, overall thruster efficiencies approaching 30% with specific impulses approaching 1000 s must be achieved.
Publication Date: Oct 26, 1989
Document ID:
19960022968
(Acquired Jul 03, 1996)
Accession Number: 96N71339
Subject Category: PLASMA PHYSICS
Document Type: Conference Paper
Publication Information: Overview of the Center for Advanced Space Propulsion; (NASA-CR-199690); (SEE 19960022963)
Financial Sponsor: NASA; Washington, DC United States
Organization Source: Electric Propulsion Lab., Inc.; Lancaster, CA United States
Description: 4p; In English
Distribution Limits: Unclassified; Publicly available; Unlimited
Rights: No Copyright
NASA Terms: PLASMA ACCELERATORS; PLASMA PROPULSION; SPECIFIC IMPULSE; ELECTROSTATIC PROPULSION; ELECTRIC ROCKET ENGINES; PLASMA ACCELERATION; HOLLOW CATHODES; PROPULSION SYSTEM PERFORMANCE; COMMUNICATION SATELLITES
› Back to Top
Find Similar Records
NASA Logo, External Link
NASA Official: Gerald Steeman
Site Curator: STI Program
Last Modified: September 08, 2011
Contact Us