Magnetics Business & Technology - May/June 2021 - 45

ADVERTISING INDEX
Index of Advertisers	

Perseverance Lands on Mars with maxon
Precision Motors Aboard

Index of Advertisers

Continued from page 46...
Audemars Microtec (R. Audemars SA)	
Bunting 	

16-17, 34
www.audemars.com

25, 34
www.magnetapplications.com

Dura Magnetics	

31, 35
www.duramag.com

Elytone Electronic Co., Ltd	

15, 35
www.elytone.com.tw/magnetics

General Atomics	

42
www.ga.com/magnet-technologies.com

GMW Associates	

5, 36
www.gmw.com

ITG Electronics	

7, 33, 36
www.itg-electronics.com

Laboratorio Elettrofisico USA, Inc.	
29, 37
www.laboratorio.elettrofisico.com
Lake Shore Cryotronics, Inc.	
Magnet-Physics, Inc.	
Magnetic Instrumentation	
Magnetic Metals	
Max Baermann GmbH	
MEDA, Inc.	
Metrolab Technology	
New England Wire Technologies	
Space Tech Expo	
TE Connectivity	

11, 37
www.lakeshore.com
9, 38
www.magnet-physics.com
23, 38
www.maginst.com
27, 39
www.magneticmetals.com
39
www.max-baermann.de
12-13, 21, 40
www.meda.com
19, 40
www.metrolab.com
41, 48
www.newenglandwire.com
47
www.spacetechexpo.com
2, 41
www.te.com

Vibration and shock - The first challenge is to survive the rocket launch.
This means that the motor must be resistant to shock and vibration. The
vibration is not as strong as people might think: A little more than on a passenger plane, but not much more, and only for a few minutes. Shocks, on
the other hand, are something that we need to deal with on a regular basis
when working with standard products. These occur mainly during staging,
which is when the first stage separates from the rest of the rocket. The
resulting forces would destroy normal motors because the rotor would
become separated from the stator. That's why we need to reinforce our
drives, for example by encapsulating the rotor and using special welds,
special retaining rings, and optimized materials.
Vacuum and radiation - The trip to Mars takes about six months. During
this time, the drives need to survive the vacuum and radiation. The most
damaging radiation doesn't come from the Sun, but from high-energy particles from outside the solar system, which can damage the electronics.
That's why we need specially hardened electronics for the Hall sensors
on the motors. To be extra safe, we're installing them in pairs for redundancy. In a vacuum, the durability of components is important. You can't
use a glue that undergoes changes in its chemical properties and loses its
adhesiveness after a few days in a vacuum.

Weight reduction - Rockets can carry only a limited mass to other plan-

ets. To be as light as possible, we also resort to unusual shapes and
use thinner housings, or titanium instead of steel. We also often use the
smallest possible drive sizes, because we know that the operating time
required is usually shorter than for industrial applications. Higher wear is
therefore acceptable.

Atmosphere of Mars - After arriving, the motor must work flawlessly for
To Advertise in Magnetics Business & Technology
Contact Scott Webster at 917-445-6122 or email
ScottW@WebcomCommunications.com

the entire duration of the mission: Due to the thin atmosphere, the lubricants need to be resistant to outgassing and need to retain their properties. Especially for brushed DC motors, it is also necessary to use the
right brush mixture. No patina forms on Mars, which is why we developed
special brushes impregnated with a lubricant (silver graphite with 15%
MoS2). That's one of the most important modifications, because regular
brushed motors fail after only a few hours in a vacuum.
For more info, see www.maxongroup.com.

www.MagneticsMag.com

May/June 2021 * Magnetics Business & Technology

45


http://www.audemars.com http://www.magnetapplications.com http://www.duramag.com http://www.elytone.com.tw/magnetics http://www.ga.com/magnet-technologies.com http://www.gmw.com http://www.itg-electronics.com http://www.laboratorio.elettrofisico.com http://www.lakeshore.com http://www.magnet-physics.com http://www.maginst.com http://www.magneticmetals.com http://www.max-baermann.de http://www.meda.com http://www.metrolab.com http://www.newenglandwire.com http://www.spacetechexpo.com http://www.te.com http://www.maxongroup.com http://www.MagneticsMag.com

Magnetics Business & Technology - May/June 2021

Table of Contents for the Digital Edition of Magnetics Business & Technology - May/June 2021

Magnetics Business & Technology - May/June 2021
Editor’s Choice/ Features
Major Automakers Transform Their Design & Manufacturing Operations for EV Surge – Part 1 of 2
Top-Tier Automotive Suppliers Transform to Become Fully Integrated e-Powertrain Manufacturers, Part 2 of 2
GE Seeks to Power Canadian Icebreaker Fleet with SEAJET Electric Propulsion Pods
Research & Development
Product News
Industry News
Annual Industry Resource Guide
Events Calendar/ Advertising Index
Perseverance Lands on Mars with maxon Precision Motors Aboard
Visions
Magnetics Business & Technology - May/June 2021 - Cover1
Magnetics Business & Technology - May/June 2021 - Cover2
Magnetics Business & Technology - May/June 2021 - 3
Magnetics Business & Technology - May/June 2021 - Editor’s Choice/ Features
Magnetics Business & Technology - May/June 2021 - 5
Magnetics Business & Technology - May/June 2021 - Major Automakers Transform Their Design & Manufacturing Operations for EV Surge – Part 1 of 2
Magnetics Business & Technology - May/June 2021 - 7
Magnetics Business & Technology - May/June 2021 - 8
Magnetics Business & Technology - May/June 2021 - 9
Magnetics Business & Technology - May/June 2021 - Top-Tier Automotive Suppliers Transform to Become Fully Integrated e-Powertrain Manufacturers, Part 2 of 2
Magnetics Business & Technology - May/June 2021 - 11
Magnetics Business & Technology - May/June 2021 - 12
Magnetics Business & Technology - May/June 2021 - 13
Magnetics Business & Technology - May/June 2021 - 14
Magnetics Business & Technology - May/June 2021 - 15
Magnetics Business & Technology - May/June 2021 - GE Seeks to Power Canadian Icebreaker Fleet with SEAJET Electric Propulsion Pods
Magnetics Business & Technology - May/June 2021 - 17
Magnetics Business & Technology - May/June 2021 - 18
Magnetics Business & Technology - May/June 2021 - 19
Magnetics Business & Technology - May/June 2021 - Research & Development
Magnetics Business & Technology - May/June 2021 - 21
Magnetics Business & Technology - May/June 2021 - Product News
Magnetics Business & Technology - May/June 2021 - 23
Magnetics Business & Technology - May/June 2021 - 24
Magnetics Business & Technology - May/June 2021 - 25
Magnetics Business & Technology - May/June 2021 - 26
Magnetics Business & Technology - May/June 2021 - 27
Magnetics Business & Technology - May/June 2021 - Industry News
Magnetics Business & Technology - May/June 2021 - 29
Magnetics Business & Technology - May/June 2021 - 30
Magnetics Business & Technology - May/June 2021 - 31
Magnetics Business & Technology - May/June 2021 - 32
Magnetics Business & Technology - May/June 2021 - 33
Magnetics Business & Technology - May/June 2021 - Annual Industry Resource Guide
Magnetics Business & Technology - May/June 2021 - 35
Magnetics Business & Technology - May/June 2021 - 36
Magnetics Business & Technology - May/June 2021 - 37
Magnetics Business & Technology - May/June 2021 - 38
Magnetics Business & Technology - May/June 2021 - 39
Magnetics Business & Technology - May/June 2021 - 40
Magnetics Business & Technology - May/June 2021 - 41
Magnetics Business & Technology - May/June 2021 - 42
Magnetics Business & Technology - May/June 2021 - 43
Magnetics Business & Technology - May/June 2021 - Events Calendar/ Advertising Index
Magnetics Business & Technology - May/June 2021 - 45
Magnetics Business & Technology - May/June 2021 - Visions
Magnetics Business & Technology - May/June 2021 - Cover3
Magnetics Business & Technology - May/June 2021 - Cover4
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