ESD Verification of CubeSats for Flight › sites › default › files › workshops › 2017 ›...

10/15/20171

ESD Verification of CubeSats for Flight

Invited Speaker Bob Vermillion, CPP, Fellow

Certified, ESD & Product Safety Engineer-iNARTERMV Technology Group, LLCNASA Ames Research Center

A NASA Industry PartnerMoffett Field, CA 94035

www.esdaerospacetraining.org

copyright 2017. RMV Technology Group LLC.

Instructor

©2017. RMV Technology Group, LLC. All Rights Reserved.

1:30 PM – 2:30 PM

13 October 2017

Huntsville, Alabama

Mini Tutorial

NAVY

USAFARMY

MARINES

For our Patriots!

10/15/2017

NASA

Ken Crane

Acknowledgments

• Ray Gompf, Ph.D., P.E., NASA

NASA Kennedy Space Center (Ret.)

• John Kolyer, Ph.D., Research Scientist, Boeing (Ret.)

• Amin Djamshidpour, Co-Founder Teton Aerospace

TuPod Testing, Staging and Deployment www.tetonsys.com

• Jorg Fisher, Space Science Labs at UC Berkeley

• Gene S. Monroe, MSEE, NASA Langley

NASA IAWG Program Manager

10/15/2017 3copyright 2017. RMV Technology Group LLC.

http://www.tetonsys.com/

Background – ESD Prevention is Important!

• January 1967 Apollo 1 Disaster

• $500,000,000 Worldwide Problem in 1984

• $4,000,000,000 Problem in 1994

• $8,000,000,000 Estimate in 2004

• $40,000,000,000 Estimate by JPL/NASA

• ANSI/ESD S20.20 Implemented in 1999

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Moore’s Law: Microprocessor Densification from 1971 to 2017


2015 ITRS Technical Requirements Electrostatics

Technical Requirements Electrostatics

2004 2005 2006 2007 2008 2009 2010 2011 2012 2013 2014 2015 2016 2017 2018 2019

90nm 80nm 70nm 65nm 57nm 50nm 45nm 40nm 35nm 32nm 28nm 25nm 22nm 20nm 18nm 16nm

100 V/cm 90 V/cm 80 V/cm 70 V/cm 63 V/cm 55 V/cm 50 V/cm 44 V/cm 38 V/cm 35 V/cm 31 V/cm 28 V/cm 25 V/cm 22 V/cm 20 V/cm 18 V/cm

1.0 nC 0.8 nC 0.60 nC 0.5 nC 0.40 nC 0.30 nC 0.25 nC 0.20 nC 0.15 nC 0.125 nC 0.10 nC 0.08 nC 0.06 nC 0.05 nC 0.04 nC 0.03 nC

(100V) (80V) (60V) (50V) (40V) (30V) (25V) (20V) (15V) (12.5V) (10V) (8V) (6V) (5V) (4V) (3V)

100 V/cm 90 V/cm 80 V/cm 70 V/cm 63 V/cm 55 V/cm 50 V/cm 44 V/cm 38 V/cm 35 V/cm 31 V/cm 28 V/cm 25 V/cm 22 V/cm 20 V/cm 18 V/cm

10/15/2017 7

Spacecraft Specifications

6.1 m x 5.6 m x 3.9 m (20.0 ft. x 18.4 ft. x 12.8 ft.)

2,857 kg (6,299 lbs.) dry mass

GOES-R SPACECRAFT

Large Satellite

Artist's rendering of GOES-R

Credits: NASA

10/15/2017 8

Overview of the variety of spacecraft that fall into the small spacecraft category

NASA/TP–2015–216648/REV1

Satellite Densification

844 lbs. 64 lbs. 3 lbs. 0.011 lbs.

LADEECYGNSS-1 PhoneSat 1.0

KickSat

10/15/2017 9

Contact/Separation 3 Million Volts


What affects Charge?

• Size of Contact Area

• How Fast Materials Separate?

• Where Materials Occur in the Triboelectric Series?

• Smoothness of Material

• How much Pressure is pressing on two Materials?

• What is the Relative Humidity?

• Is the Material Dry or Hydrated?• Are Materials Humidity Independent or

Humidity Dependent?


10/15/2017 11

Qualification Testing before Selection

10/15/2017 copyright 2017. RMV Technology Group LLC. 12

10/15/2017 13

Insure CubeSat Compliance!

Physical Testing Insures Compliance

Static Decay

Resistance

Testing

Static Shielding Step 1

copyright 2017. RMV Technology Group LLC. All rights reserved.

Volume Resistance from Top to Base per

ANSI/ESD STM11.12-2015

10/15/2017 14

In Chamber Preconditioning at 48

Hours 0.2%RH at 72.40F

For Flight


2.21 x 103 ohms


10/15/2017 15

0.2%RH at 72.40F

In Chamber Preconditioning at 48 Hours at 0.2%RH at 72.40F

For Flight


/

10/15/2017 16


0.2%RH at 72.40F


For Flight

2.222 x 103 ohms

Side 2

10/15/2017 17

In Chamber Preconditioning at 48 Hours 0.2%RH at 72.40F

For Flight

2.26 x 103 ohms



10/15/2017 18

In Chamber Preconditioning at 48 Hours 0.2%RH at 72.40F

For Flight


6.68 x 103 ohms

Electrostatic Decay from +/-1000 volts to 100 volts in <2.0 Seconds

10/15/2017 19

In Lab at 48 Hours 10%RH at 73.40F

For Flight


Electrical Continuity of TubeSat to Delivery Platform

Shielding is in the Design


Dr. Kolyer High Voltage Discharge Test

10/15/2017 21

For Flight

Discharge at 5kV with no Failure

10/15/2017 22

100 volts SED Unit

For Flight


5kV Discharge from the Side with No Failure

For Flight


Conclusion

Qualification Testing at Low RH

• Deployment Door Volume Resistance Passed

• Tube 2-Point Resistance Passed

• Electrical Continuity Resistance from TuPod Unit to Base Electrode

Passed

• Volume Resistance from Deployment Door to Base Passed

• Electrostatic Decay from Top to Bottom Passed

• Electrostatic Decay from Both TuPod Units to Base Passed

• Electrostatic Decay from TuPod Unit, Spring and Base Passed

• Dr. Kolyer High Voltage Discharge Shielding Test Passed

10/15/2017 24

For Flight


Class A ESD Work

Station

10/15/2017 25©2017. RMV Technology Group, LLC. All Rights Reserved.

GP*

GP

WRIST STRAP GROUND TERMINAL

WRIST STRAP RESISTOR IS

MANDATORY

EQUIPMENT

GROUND

ESD GROUND MAT

STAND ON SURFACE

ESD GROUNDED MATS

GP*

GP*

.

.

Ionizer


ESD


ANSI/ESD STM4.1

Class A & B

GP

WRIST STRAP GROUND TERMINAL

WRIST STRAP RESISTOR IS

MANDATORY

EQUIPMENT

GROUND

ESD GROUNDED

MATSGP*

.

.

27

ESD Wrist Strap at Grounded Work Station


Class C & D

Simple Desk Grounding

10/15/2017 28

ESD Wrist Strap does the Job


Class D – R&D

Following Proper ESD Protocols


SmallSat ESD STM4.1 Workstation

10/15/2017 30©2017 . RMV Technology Group, LLC. All Rights Reserved.

Validating the Wrist strap

10/15/2017 31©2017. – RMV Technology Group, LLC. All Rights Reserved.

ESD Adv. 11.2 Contact Voltage

10/15/2017 32

For Flight


Preventing Suspect Counterfeit ESD Packaging

for CubeSat Transport Integrity

10/15/2017© 2017. RMV Technology Group LLC.

Products that Prevent Charge Generation

But Do Not Shield!

• Pink Poly Bags

• Open ESD Bags Dissipative w/o Closure

• Torn Bags

• Anti-Static

• Static Dissipative

• Kraft w/Static Dissipative Foam

• Open Conductive Boxes that transport Circuit Cards


https://www.youtube.com/watch?v=kmuYlo_1Wvo&t=13s

Static Shielding Packaging Products

Shielding Barrier

ESD Corrugated

Plastics

Paper

Cases

• Static Shielding• Corrugated Containers

• Static Shielding Totes• Conductive Corrugated

w/static shielding foam

• EMI/RFI Foil w/Barrier• Type Bags, Type 1• Carbon Loaded Bags

• Aluminum Attaché’ Cases

• Small Hinged

• Static Shielding Cases


10/15/2017 36

High Bay to Work Station = Shielding

©2017. RMV Technology Group, LLC All Rights Reserved.

KSC – Roll Out Solar Array1James Webb NASA GFC1 ARC – CubeSat1

RMV – TubeSat & CubeSat

1NASA Images

CubeSat in EMI/RFI Shielding Type 1Bag


CubeSat (TubeSat) EMI/RFI Protected


Type III Double Bag CubeSat


10/15/2017 40

EMI/RFI Bag with TuPod in Shielding Box with Cushioning


TubeSat

TubeSat Sandwiched between GeoSpring® Inserts

10/15/2017 41

For Flight


GeoSpring®Insert

10/15/2017 42

For Flight


10/15/2017 43

EMI/RFI TuPod in Shielding Box with Cushioning

For Flight


10/15/2017 44

Static Event Detectors (SED) did not Trigger after 5kV

Clear


Type I Moisture Barrier Bag


6 mil


10/15/2017 46

10/15/2017 47

Removing COTS from Shielding Bag


SmallSat at ESD STM4.1 Workstation

10/15/2017 49


Courtesy of Teton Aerospace

Happy SmallSat Builder!

10/15/2017 50

Courtesy of Amin Djamshidpour,Co-Founder Teton Aerospace


https://www.youtube.com/watch?v=e8vLCDf0t-c

https://www.youtube.com/watch?v=e8vLCDf0t-c

Product Qualification = Successful Deployment

10/15/2017

Courtesy of Amin Djamshidpour, Co-Founder Teton Aerospace

©2017 RMV Technology Group LLC. All rights reserved.

□ Qualify and Specify products for Purchase!

□ Don’t rely on Vendor Specification Sheets

□ Conduct Packaging and ESD Material Reviews

□ Know the Products your Purchase

□ Trust (Test) but continue to Verify beyond a visual inspection

process!

□ Training! Training! Training!

□ Place Suppliers on a CoC Program10/15/2017

In Summary

© 2016. RMV Technology Group LLC.

Thank you!

Questions?

Credentials

Bob Vermillion, CPP, FellowCertified, ESD Engineer & Product Safety-iNARTE

Member, ESDA Standards CommitteeNASA IAWG on ESD

Former Board of Directors – iNARTEG-19A Co-Chair Packaging EEE & G-21 Committee Member

College of Fellows, Institute of Packaging ProfessionalsFormer BOD, Silicon Valley EOS/ESD Society

Controlled Environments Advisory BoardFounder IoPP ESD Medical Device Committee

10/15/2017 54©2017. RMV Technology Group LLC. All rights reserved.

How to Contact Us

10/15/2017

RMV Technology Group LLCA NASA Industry PartnerNASA Ames Research Park350 North Akron RoadSuite 1073, MS 19-46CMoffett Field, CA 94035T 650.964.4792F 650.964-1268

Bob Vermillion, Founder & CEO [email protected]@esdrmv.com650-964-4792

www.esdaerospacetraining.org

www.esdrmv.com

mailto:[email protected]

mailto:[email protected]

http://www.esdrmv.com/

http://www.esdrmv.com/

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ESD Verification of CubeSats for Flight › sites › default › files › workshops › 2017 ›...

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