Microgravity Analysis Software System (MASS) 2002Page 1 Microgravity Analysis Software System (MASS)

2002 Page 1

Microgravity Analysis Software System (MASS)

Microgravity Analysis Software System

(MASS)

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Information Flow Diagram

packetGrabber

listener/talker

packetWriter

off-line analysis

Space Acceleration Measurement System (SAMS)

Microgravity Acceleration Measurement System (MAMS)

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Data Flow Diagram

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• PIMS has the responsibility within NASA’s Biological and Physical Research Enterprise to provide processing, analysis, and archival of acceleration data for the microgravity scientific community

• PIMS supports the following reduced gravity platforms: ISS, Space Shuttle, parabolic aircraft, sounding rockets, drop towers, and ground based test facilities

• PIMS performs these functions for the SAMS, SAMS-II, SAMS-FF, OARE, and MAMS acceleration measurement systems

• PIMS supports the following scientific disciplines: biotechnology, combustion science, fluid physics, materials science, fundamental physics, vehicle dynamics

Principal Investigator Microgravity Services (PIMS) Project

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Name Title

Richard DeLombard Discipline Scientist

Carlos Grodsinsky Program Manager

Kenneth Hrovat Data Analyst

Kenol Jules Project Scientist

Eric Kelly Data Analyst

Eugene Liberman Software Engineer

Nissim Lugasy Software Engineer

Kevin McPherson Project Manager

Timothy Reckart Webmaster

David Thompson Research Associate

Ted Wright Software Engineer

Acknowledgements

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Acknowledgements to Key Software ComponentsName Task

packetGrabber Retrieves UDP telemetry in real time and from playbacks. Writes telemetry to database and time orders all received UDP telemetry

listener/talker Provides communication between database and real time displays

Real-time Displays Plots acceleration data for PI’s and PIMS data analysts

Monitor and Control Controls active real time displays and monitors all MASS software components

Interim Data Processing Preprocesses acceleration data before archival

Data Base Control Provides control of ancillary parameters written with each acceleration data file

packetWriter Archives all acceleration data and maintains real time databases

Offline Analysis Software Provides detailed analysis of acceleration data

PIMS WWW Site Provides interface to the microgravity user community

MASS Software Components

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Outline for Real-Time Components

• Data Flow Block Diagram>> Understand overall data flow from on board the ISS to the

microgravity user community

>> Identify and explain key software components

• Monitor and Control System front panel

• HiRAP real-time display demonstration

• EXPPCS operations demonstration

• STS-110 docking to the International Space Station

• PIMS ISS Web Site Functionality (http://pims.grc.nasa.gov)

Real-Time Systems

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MASS Data Flow Diagram

packetGrabber

Listener/talker

Real-time displays

Interim data processing

packetWriter

ISS Acceleration

Data

Monitor and Control

Database Control

Interface to Microgravity

User Community

Acceleration Data and Image

Archive

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Monitor and Control System Front Panel

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Outline• Motivation - why have a separate off-line system?

• Useful access to all acceleration data in archive

>> mountain = muchoAccelerationData;

>> motivationForOffLine = molehill

( mountain );• How much is muchoAccelerationData ?

• A couple of molehill examples – batch processing

• Sample session, step-by-step

• Sample output

Off-Line Analysis

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Motivation: how much data are we talking about?

Off-Line Analysis

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12

12 hours

Spectrogram boundaries & structure in time and frequency

Why is RF # 2 working so much?

over 2 hours!

Off-Line Analysis

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Principal Component Spectral Analysis: summarize acceleration spectrum

Exercise

Vehicle structural

modes

SLEEP

WAKE

Centrifuge

Antenna dither1

2

LSLE refrigerator compressors

span > 15 days

Off-Line Analysis

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Front-End GUI To Specify Data Set(s) of Interest

Sample Session: Step 1

Off-Line Analysis

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Data Loader GUI(s) Offer Distinct Data Sets/Gaps


Off-Line Analysis

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Disposal GUI To Specify Output Parameters


Off-Line Analysis

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Editor GUI To Change Parameters

Sample Session: [ Step 3.1 ]

• when defaults just won’t do

• plot-specific editor for each type of output

Off-Line Analysis

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Sample Session: Step 3 (resume)


Off-Line Analysis

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Editor GUI To Change Parameters

Sample Session: [ Step 3.2 ]

• when as-archived orientation just won’t do

• on-the-fly addition of custom coordinate systems

• several methods to define coordinate systems (Euler, quaternion, axis/angle)

• visual aid to verify coordinate system orientation

Off-Line Analysis

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Sample Session: Step 3 (resume)

Off-Line Analysis

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Sample Output

Qualify Disturbances

Off-Line Analysis

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Sample Output

Quantify DisturbancesShuttle Primary

Reaction Control System (PRCS) Thruster Firing

~ 50 mg

Off-Line Analysis

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Sample Output

Comparisons

compare adjacent racks, same time frame, same cutoff

Off-Line Analysis

Microgravity Analysis Software System (MASS) 2002Page 1 Microgravity Analysis Software System (MASS)

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