National Aeronautics and Space Administration (NASA) Glenn Research Center

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Space Acceleration Measurement System (SAMS)Support for 3D Printing in Zero-G Experiment

Kevin McPherson

Payload Operation IntegrationWorking Group (POIWG) #36 July,

2014

National Aeronautics and Space Administration (NASA) Glenn Research Center

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1.MSG Diagram and Photos of SAMS

2.SAMS Web-Based Resources

3.How To Request SAMS Support

4.Quick Look at MSG Vibratory Environment

5.Questions

Outline

National Aeronautics and Space Administration (NASA) Glenn Research Center

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1.MSG Diagram and Photos of SAMS

2.SAMS Web-Based Resources

3.How To Request SAMS Support

4.Quick Look at MSG Vibratory Environment

5.Questions

Outline

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MSG Diagram and Photos of SAMS

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MSG Diagram and Photos of SAMSScreenshot of SAMS Installation Procedure*

The SAMS TSH sensor can be mounted in

various places in the MSG work volume.

*Thanks to Charlie Scott, MSG Ops team.

This image shows sensor mounted on the ceiling,

toward the back, right side.

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MSG Diagram and Photos of SAMS

• Power connection: either Experiment Outlet 1 (shown in the photo) or Experiment Outlet 2 (in the upper-right side of the work volume’s rear wall).

• Ethernet connection is always in the lower-left side, as shown in the photo.

Power & Ethernet Connections

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MSG Diagram and Photos of SAMSSAMS TSH Mounted in WV on Cold Plate

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MSG Diagram and Photos of SAMSSAMS TSH-ES08 Mounted in Support of SODI

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MSG Diagram and Photos of SAMSSAMS TSH-ES08 Mounted in Support of SODI

Zoom-In

National Aeronautics and Space Administration (NASA) Glenn Research Center

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1.MSG Diagram and Photos of SAMS

2.SAMS Web-Based Resources

3.How To Request SAMS Support

4.Quick Look at MSG Vibratory Environment

5.Questions

Outline

National Aeronautics and Space Administration (NASA) Glenn Research Center

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SAMS Web-Based Resources

REAL-TIME: Displays nominally show most recent ~2-hours.

http://pims.grc.nasa.gov/html/PIMS_ISS_plots.html

BUFFER: Links to most recent 2-days of real-time screenshots. Updated every half hour.

http://pims.grc.nasa.gov/plots/user/buffer

ARCHIVE (updated daily for last ~13 years): Access PIMS roadmap PDFs for easy visualization of available

acceleration data by sensor in calendar view format.

http://pims.grc.nasa.gov/roadmap

Download the acceleration measurement data via FTP.

http://pims.grc.nasa.gov/ftp/pad

National Aeronautics and Space Administration (NASA) Glenn Research Center

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SAMS Web-Based Resources

REAL-TIME: Displays nominally show most recent ~2-hours.

http://pims.grc.nasa.gov/html/PIMS_ISS_plots.html

BUFFER: Links to most recent 2-days of real-time screenshots. Updated every half hour.

http://pims.grc.nasa.gov/plots/user/buffer

ARCHIVE (updated daily for last ~13 years): Access PIMS roadmap PDFs for easy visualization of available

acceleration data by sensor in calendar view format.

http://pims.grc.nasa.gov/roadmap

Download the acceleration measurement data via FTP.

http://pims.grc.nasa.gov/ftp/pad

National Aeronautics and Space Administration (NASA) Glenn Research Center

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SAMS Web-Based Resources

REAL-TIME: Displays nominally show most recent ~2-hours.

http://pims.grc.nasa.gov/html/PIMS_ISS_plots.html

BUFFER: Links to most recent 2-days of real-time screenshots. Updated every half hour.

http://pims.grc.nasa.gov/plots/user/buffer

ARCHIVE (updated daily for last ~13 years): Access PIMS roadmap PDFs for easy visualization of available

acceleration data by sensor in calendar view format.

http://pims.grc.nasa.gov/roadmap

Download the acceleration measurement data via FTP.

http://pims.grc.nasa.gov/ftp/pad

National Aeronautics and Space Administration (NASA) Glenn Research Center

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1.MSG Diagram and Photos of SAMS

2.SAMS Web-Based Resources

3.How To Request SAMS Support

4.Quick Look at MSG Vibratory Environment

5.Questions

Outline

National Aeronautics and Space Administration (NASA) Glenn Research Center

How To Request SAMS Support

Send email to:pimsops@grc.nasa.gov

• At least a week lead time for draft/review of crew procedure*, then…

• At least a week lead time for POIC’s review process, then…

• A couple weeks to get crew time scheduled.

* this assumes location and mounting location and steps for TSH is already established, also, another example procedure to see in the International Procedure Viewer (IPV) is:US PODF > 2.019 FCF LMM INSTALL TSH

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1. Spatial• Where is your location of interest? ( SSA coordinates )

• Vibratory disturbances tend to be localized. ( less so @ low freq. )

2. Temporal (SAMS SEs nom. operate 24x7, but not TSHs)

• When do you expect to operate?• Relative quiet below ~6 Hz during crew sleep.• Some investigators leverage crew sleep for sensitive periods.• Perhaps you take special precautions during a reboost.

3. Spectral• Any resonant frequencies? ( phenomena studied, meas. equipment )

• Fruit fly investigation has sensitivity between ~140-200 Hz.• Marangoni liquid bridge experiment sensitive ~0.25 Hz.

How To Request SAMS SupportSome Important Aspects to Consider

National Aeronautics and Space Administration (NASA) Glenn Research Center

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1. Spatial• Where is your location of interest? ( SSA coordinates )

• Vibratory disturbances tend to be localized. ( less so @ low freq. )

2. Temporal (SAMS SEs nom. operate 24x7, but not TSHs)

• When do you expect to operate?• Relative quiet below ~6 Hz during crew sleep.• Some investigators leverage crew sleep for sensitive periods.• Perhaps you take special precautions during a reboost.

3. Spectral• Any resonant frequencies? ( phenomena studied, meas. equipment )

• Fruit fly investigation has sensitivity between ~140-200 Hz.• Marangoni liquid bridge experiment sensitive ~0.25 Hz.

How To Request SAMS SupportSome Important Aspects to Consider

National Aeronautics and Space Administration (NASA) Glenn Research Center

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1. Spatial• Where is your location of interest? ( SSA coordinates )

• Vibratory disturbances tend to be localized. ( less so @ low freq. )

2. Temporal (SAMS SEs nom. operate 24x7, but not TSHs)

• When do you expect to operate?• Relative quiet below ~6 Hz during crew sleep.• Some investigators leverage crew sleep for sensitive periods.• Perhaps you take special precautions during a reboost.

3. Spectral• Any resonant frequencies? ( phenomena studied, meas. equipment )

• Fruit fly investigation has sensitivity between ~140-200 Hz.• Marangoni liquid bridge experiment sensitive ~0.25 Hz.

How To Request SAMS SupportSome Important Aspects to Consider

National Aeronautics and Space Administration (NASA) Glenn Research Center

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1.MSG Diagram and Photos of SAMS

2.SAMS Web-Based Resources

3.How To Request SAMS Support

4.Quick Look at MSG Vibratory Environment

5.Questions

Outline

National Aeronautics and Space Administration (NASA) Glenn Research Center

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Quick Look at MSG Vibratory Environment

Spectrograms = Roadmaps Qualify the Environment

FR

EQ

UE

NC

Y

TIMEP

SD

MA

GN

ITU

DE

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Quick Look at MSG Vibratory Environment

OPEN73 Hz

3 Fans w/ Work Vol.

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Quick Look at MSG Vibratory Environment

CLOSED46.5 Hz

3 Fans w/ Work Vol.

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Quick Look at MSG Vibratory Environment

Cumulative RMS vs. Frequency Quantify

RO

OT

ME

AN

SQ

UA

RE

FREQUENCY

LARGE STEPS AT

STRONG SPECTRAL PEAKS

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Quick Look at MSG Vibratory Environment

OPEN

CLOSED

~900 ugRMS

~200 ugRMS

73 Hz46.5 Hz

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1.MSG Diagram and Photos of SAMS

2.SAMS Web-Based Resources

3.How To Request SAMS Support

4.Quick Look at MSG Vibratory Environment

5.Questions

Outline

National Aeronautics and Space Administration (NASA) Glenn Research Center

Questions

1. Will You Track “Print Head” Position vs. GMT?• For correlation of measured vibration with print perturbation.• SAMS data are synced with ISS time server via NTP.• On start-up of your SAMS TSH in MSG, verify its timestamps.

2. When Do You Expect to Operate?• Can you take advantage of quiet below ~6 Hz during sleep?• Perhaps you take special precautions during reboosts.

3. What Frequency Range(s) Are of Concern? • Any resonant frequencies? ( e.g. cantilevered “print head” )

• Fruit fly investigation has sensitivity between ~140-200 Hz.• Marangoni liquid bridge experiment sensitive ~0.25 Hz.

4. Would Any Tailored Real-Time Displays Help? • JAXA Marangoni liquid bridge investigators made use of

custom 5 Hz low-pass filtered, 10-second interval RMS plot.26

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BACKUP SLIDES

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SAMS Data Flow Diagram

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