Magnetics Business & Technology - Summer 2018 - 11

SPECIAL REPORT: AEROSPACE & DEFENSE
Glenn's breakthrough technology prolongs this operational
lifetime through two related innovations. The first is an innovative
magnetic field configuration that provides magnetic shielding to
eliminate interactions between the high energy xenon plasma
produced by the HET and the ceramic chamber that contains it.
The second is a means of replacing eroded discharge channel
material via a channel wall replacement mechanism. By increasing the lifetime and efficiency of HETs, Glenn's technology is
expected to help enable a new era of space propulsion.
The benefits include improved efficiency because unique designs
minimize energy loss to the discharge chamber, which improves
discharge efficiency. Lifetime of the HET is extended five times,
from approximately 10,000 hours to more than 50,000 hours.
Performance improvements result from a greater fraction of the
electrical energy from the solar array being used to produce
thrust, and a decrease in electrical energy being lost as waste
heat radiated to space.
The technology is believed to have application for satellite propulsion, material processing such as ion implantation and etching
for semiconductor manufacturing, high-energy physics and deep
space probes.

The interaction of the accelerated plasma and the downstream
edge of the channel, where the plasma is the most energetic,
results in erosion of the surrounding magnetic system used to
generate the plasma. One of NASA Glenn's novel designs relies
on an azimuthally symmetric configuration that minimizes radial
magnetic fields at the discharge chamber walls. This configuration completely shields the walls of the discharge chamber from
the high-energy plasma ions.
In the discharge-channel-wall replacement innovation, an actuator can be configured to extend the discharge chamber along
the centerline axis. The actuator can be either mechanical or
programmable. In either case, the sleeve can be extended while
an upstream portion of the discharge chamber remains stationary, thereby preventing plasma exposure. These novel designs
increase the efficiency and extend the lifetime of the HET to five
times that of unshielded thrusters, aimed at enabling a new era
of space missions.
Visit https://www.nasa.gov for the latest space news.

How it works
Used for propelling earth-orbiting satellites and deep-space robotic vehicles, the HET gets its name because it traps electrons
with an intense radial magnetic field in an azimuthal Hall current
moving around the circumference of an annular ceramic channel.
The electrons in the circulating Hall current ionize the onboard
propellant - the inert gas xenon - and create an ionized plasma.
The xenon plasma is then accelerated axially, via an applied
electric field along the coaxial channel, to an exit velocity of up to
65,000 miles per hour to produce thrust.

To Space

The Standard in Magnetic Measurements

Satellite Magnetometers
*
*
‡
*
*

MEDA.COM
www.MagneticsMag.com

3-Axis
Satellite Attitude Control
6SDFH4XDOLÀHG
Hi Rel
Radiation Hardened

SALES@MEDA.COM

703.996.8990

FAX: 703.996.8770

Summer 2018 * Magnetics Business & Technology

11


https://www.nasa.gov http://www.MEDA.COM http://www.MagneticsMag.com

Table of Contents for the Digital Edition of Magnetics Business & Technology - Summer 2018

Magnetics Business & Technology - Summer 2018
Contents
Editor’s Choice
Magnetic Nanoparticles Leap from Lab Bench to Breast Cancer Clinical Trials
Safran, a Major Player in Plasma Propulsion, Finds Booming Market for its Hall Eff ect Thrusters
NASA Develops Hall-Eff ect Electric Propulsion to Thrust Exploration on into Deep Space
Airbus-built SES-12 Dual-mission Satellite Successfully Launched
Research & Development
Case Study
Product News
Industry News
Marketplace/ Advertising Index
Spontaneous Thoughts: Dysprosium 2.0
Magnetics Business & Technology - Summer 2018 - Magnetics Business & Technology - Summer 2018
Magnetics Business & Technology - Summer 2018 - Cover2
Magnetics Business & Technology - Summer 2018 - Contents
Magnetics Business & Technology - Summer 2018 - Editor’s Choice
Magnetics Business & Technology - Summer 2018 - 5
Magnetics Business & Technology - Summer 2018 - Magnetic Nanoparticles Leap from Lab Bench to Breast Cancer Clinical Trials
Magnetics Business & Technology - Summer 2018 - 7
Magnetics Business & Technology - Summer 2018 - Safran, a Major Player in Plasma Propulsion, Finds Booming Market for its Hall Eff ect Thrusters
Magnetics Business & Technology - Summer 2018 - 9
Magnetics Business & Technology - Summer 2018 - NASA Develops Hall-Eff ect Electric Propulsion to Thrust Exploration on into Deep Space
Magnetics Business & Technology - Summer 2018 - 11
Magnetics Business & Technology - Summer 2018 - Airbus-built SES-12 Dual-mission Satellite Successfully Launched
Magnetics Business & Technology - Summer 2018 - 13
Magnetics Business & Technology - Summer 2018 - Research & Development
Magnetics Business & Technology - Summer 2018 - 15
Magnetics Business & Technology - Summer 2018 - 16
Magnetics Business & Technology - Summer 2018 - 17
Magnetics Business & Technology - Summer 2018 - 18
Magnetics Business & Technology - Summer 2018 - 19
Magnetics Business & Technology - Summer 2018 - 20
Magnetics Business & Technology - Summer 2018 - 21
Magnetics Business & Technology - Summer 2018 - 22
Magnetics Business & Technology - Summer 2018 - 23
Magnetics Business & Technology - Summer 2018 - Case Study
Magnetics Business & Technology - Summer 2018 - 25
Magnetics Business & Technology - Summer 2018 - 26
Magnetics Business & Technology - Summer 2018 - 27
Magnetics Business & Technology - Summer 2018 - Product News
Magnetics Business & Technology - Summer 2018 - 29
Magnetics Business & Technology - Summer 2018 - Industry News
Magnetics Business & Technology - Summer 2018 - 31
Magnetics Business & Technology - Summer 2018 - Marketplace/ Advertising Index
Magnetics Business & Technology - Summer 2018 - 33
Magnetics Business & Technology - Summer 2018 - Spontaneous Thoughts: Dysprosium 2.0
Magnetics Business & Technology - Summer 2018 - Cover3
Magnetics Business & Technology - Summer 2018 - Cover4
https://www.nxtbook.com/nxtbooks/webcom/magnetics_2021septemberoctober
https://www.nxtbook.com/nxtbooks/webcom/magnetics_2021julyaugust
https://www.nxtbook.com/nxtbooks/webcom/magnetics_2021mayjune
https://www.nxtbook.com/nxtbooks/webcom/magnetics_2021marchapril
https://www.nxtbook.com/nxtbooks/webcom/magnetics_2021januaryfebruary
https://www.nxtbook.com/nxtbooks/webcom/magnetics_2020novemberdecember
https://www.nxtbook.com/nxtbooks/webcom/magnetics_2020septemberoctober
https://www.nxtbook.com/nxtbooks/webcom/magnetics_2020julyaugust
https://www.nxtbook.com/nxtbooks/webcom/magnetics_2020mayjune
https://www.nxtbook.com/nxtbooks/webcom/magnetics_2020marchapril
https://www.nxtbook.com/nxtbooks/webcom/magnetics_2020januaryfebruary
https://www.nxtbook.com/nxtbooks/webcom/magnetics_2019novemberdecember
https://www.nxtbook.com/nxtbooks/webcom/magnetics_2019septemberoctober
https://www.nxtbook.com/nxtbooks/webcom/magnetics_2019julyaug
https://www.nxtbook.com/nxtbooks/webcom/magnetics_2019mayjune
https://www.nxtbook.com/nxtbooks/webcom/magnetics_2019marchapril
https://www.nxtbook.com/nxtbooks/webcom/magnetics_2019janfeb
https://www.nxtbook.com/nxtbooks/webcom/magnetics_2018winter
https://www.nxtbook.com/nxtbooks/webcom/magnetics_2018summer
https://www.nxtbook.com/nxtbooks/webcom/magnetics_2018spring
https://www.nxtbook.com/nxtbooks/webcom/magnetics_2017winter
https://www.nxtbook.com/nxtbooks/webcom/magnetics_2017summer
https://www.nxtbook.com/nxtbooks/webcom/magnetics_2017spring
https://www.nxtbook.com/nxtbooks/webcom/magnetics_2016winter
https://www.nxtbook.com/nxtbooks/webcom/magnetics_2016summer
https://www.nxtbook.com/nxtbooks/webcom/magnetics_2016spring
https://www.nxtbook.com/nxtbooks/webcom/magnetics_2015winter
https://www.nxtbook.com/nxtbooks/webcom/magnetics_2015summer
https://www.nxtbook.com/nxtbooks/webcom/magnetics_2015spring
https://www.nxtbook.com/nxtbooks/webcom/magnetics_2014winter
https://www.nxtbook.com/nxtbooks/webcom/magnetics_2014summer
https://www.nxtbook.com/nxtbooks/webcom/magnetics_2014spring
https://www.nxtbook.com/nxtbooks/webcom/magnetics_2013winter
https://www.nxtbook.com/nxtbooks/webcom/magnetics_2013fall
https://www.nxtbook.com/nxtbooks/webcom/magnetics_2013summer
https://www.nxtbook.com/nxtbooks/webcom/magnetics_2013spring
https://www.nxtbook.com/nxtbooks/webcom/magnetics_2012winter
https://www.nxtbook.com/nxtbooks/webcom/magnetics_2012fall
https://www.nxtbook.com/nxtbooks/webcom/magnetics_2012summer
https://www.nxtbook.com/nxtbooks/webcom/magnetics_2012spring
https://www.nxtbook.com/nxtbooks/webcom/magnetics_2011winter
https://www.nxtbook.com/nxtbooks/webcom/magnetics_2011fall
https://www.nxtbook.com/nxtbooks/webcom/magnetics_2011summer
https://www.nxtbookmedia.com