Sum PK-4 SAMS Checkout Qualify...from the PK-4-related valve to produce event markers every 7...
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-12 -11 -10 -9 -8 -7 -6 Σ PSD Magnitude [log 10 (g 2 /Hz)] GMT 02-June-2015, 153/hh:mm:ss Frequency (Hz) Start GMT 02-June-2015, 153/15:10:00.001 from: /data/pad/, hrovat, 02-Jun-2015,15:55:31.130 PK4-SAMS_C/O Span = 39.95 minutes Hanning, k = 2342 Sum . Temp. Res. = 1.024 sec, No = 512 ∆f = 0.488 Hz, Nfft = 1024 500.0000 sa/sec (200.00 Hz) sams2, 121f08 at COL1A3, EPM, near PK-4:[371.17 287.43 165.75] 15:10:00 15:15:00 15:20:00 15:25:00 15:30:00 15:35:02 15:40:00 15:45:00 0 20 42.2 60 80 90 100 120 140 160 180 200 Regime: Vibratory Category: Equipment Source: PK-4 SAMS Checkout PIMS ISS Acceleration Handbook Date last modified 2015-06-04 Glenn Research Center PK-4 SAMS Checkout Qualify Description Sensor SAMS 121f08 500.0 sa/sec, 200.0 Hz Location COL1A3, EPM, near PK-4 Plot Type Spectrogram Notes : • In preparation for Plasmakristall (PK-4) experiment runs in the Columbus module on the ISS, investigators from the European Space Agency (ESA) cycled a valve in their rack-mounted equipment as a vibratory event marker for the SAMS measurements they require. • This spectrogram shows about 35-minutes of SAMS vibratory measurements to give context around the valve-induced event marking activity, which started at about GMT 15:35. • Note the vertical, red streaks starting at about GMT 15:35. These are indications of an impulsive/transient event in acceleration measurements when viewed via spectrogram.
Transcript of Sum PK-4 SAMS Checkout Qualify...from the PK-4-related valve to produce event markers every 7...
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Σ P
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from: /data/pad/, hrovat, 02−Jun−2015,15:55:31.130
PK4−SAMS_C/OSpan = 39.95 minutes
Hanning, k = 2342Sum
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Temp. Res. = 1.024 sec, No = 512∆f = 0.488 Hz, Nfft = 1024500.0000 sa/sec (200.00 Hz)sams2, 121f08 at COL1A3, EPM, near PK−4:[371.17 287.43 165.75]
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Source: PK-4 SAMS Checkout
PIMS ISS Acceleration HandbookDate last modified 2015-06-04 Glenn Research Center
PK-4 SAMS CheckoutQualify
Description
SensorSAMS 121f08500.0 sa/sec, 200.0 Hz
Location COL1A3, EPM, near PK-4
Plot Type Spectrogram
Notes: • In preparation for Plasmakristall (PK-4)
experiment runs in the Columbus module on the ISS, investigators from the European Space Agency (ESA) cycled a valve in their rack-mounted equipment as a vibratory event marker for the SAMS measurements they require.
• This spectrogram shows about 35-minutes of SAMS vibratory measurements to give context around the valve-induced event marking activity, which started at about GMT 15:35.
• Note the vertical, red streaks starting at about GMT 15:35. These are indications of an impulsive/transient event in acceleration measurements when viewed via spectrogram.
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PK4−SAMS_C/OSSAnalysis[ 0.0 0.0 0.0]
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500.0000 sa/sec (200.00 Hz)
sams2, 121f08 at COL1A3, EPM, near PK−4:[371.17 287.43 165.75]
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GMT 02−June−2015, 153/hh:mmRegime: Vibratory
Category: Equipment
Source: PK-4 SAMS Checkout
PIMS ISS Acceleration HandbookDate last modified 2015-06-04 Glenn Research Center
PK-4 SAMS CheckoutQuantify
Description
SensorSAMS 121f08500.0 sa/sec, 200.0 Hz
Location COL1A3, EPM, near PK-4
Plot Type Acceleration vs. Time
Notes: • This 3-axis plot of acceleration versus time
corresponds to the same span as the spectrogram shown on the previous page.
• Most notably, see the valve-induced event markers on all 3 axes starting at about GMT 15:35.
• Furthermore, it seems that the valve actuation was aligned primarily with the Y-axis, and the XY-plane.
• Acceleration peak-to-peak magnitudes were over 120 mg on the Y-axis alone.
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Start GMT 02−June−2015, 153/15:10:00.001
PK4−SAMS_C/OSSAnalysis[ 0.0 0.0 0.0]
.500.0000 sa/sec (200.00 Hz)sams2, 121f08 at COL1A3, EPM, near PK−4:[371.17 287.43 165.75]
15:35:04.89115:35:11.843
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15:35:32.82015:35:39.891
15:35:46.84315:35:53.914
15:36:00.86715:36:07.938
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Z−AxisAcceleration(m
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Category: Equipment
Source: PK-4 SAMS Checkout
PIMS ISS Acceleration HandbookDate last modified 2015-06-04 Glenn Research Center
PK-4 SAMS CheckoutQuantify
Description
SensorSAMS 121f08500.0 sa/sec, 200.0 Hz
Location COL1A3, EPM, near PK-4
Plot Type Acceleration vs. Time
Notes: • This 3-axis plot of acceleration versus time
is a zoom-in on the time axis from the plot on the previous page.
• Here we can clearly see ten cycles (bangs) from the PK-4-related valve to produce event markers every 7 seconds.
• Note that after each big bang from the valve, there is a much smaller vibratory impulse that follows about 2 seconds after the initial big bang. This may be to reseat the valve in preparation for the next cycle.
