JEM MEIS INC1920 31407

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JEM MEIS INC1920 31407 Marangoni Experiment
Inc19/20
Instructor
Yuki Kawai Takuya Takami
(yuki.kawai_at_jamss.co.jp) (takami.takuya_at_jaxa.jp)
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Objectives
After this lesson the trainee will be able to

• Marangoni Experiment
• MS (Marangoni Surface)
• Marangoni Experiment Operations Overview
• Key point during Marangoni Experiment Operations
• Marangoni Experiment Operations

• Explain the science objective of Marangoni
  Experiment.
• List onboard outcomes from performing Marangoni
  Experiment.
• List three components of MS.
• Explain how liquid bridge is formed.
• List crew tasks regarding Marangoni Experiment.
• Explain what crew must check after assembling MS
  Core and MS Cassette to prevent fire during
  experiment.
• Explain what crew must pay attention to
  protective covers to prevent broken glass hazard.
• Identify the parts where crew must not damage
  nor contaminate.
• Explain what crew must check just before
  installation of MS into FPEF.
• Explain what crew must care during 3-D Camera
  focus adjustment.
• Explain what crew must not do while inserting MS
  Cassette into MS Core .
• Perform Marangoni Experiment tasks according to
  ODF.

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Lesson Outline
Contents - Marangoni Experiment - MS
Architecture - MS Major Components -
Marangoni Experiment Operations Overview - Key
Points during Marangoni Experiment Operations
- Acronyms
Page 4 5 6 8 14 15
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Marangoni Experiment
The main purpose of Marangoni Experiment is to
investigate the transition process to periodic,
chaotic and turbulent flows of marangoni
convection in a liquid bridge.
Onboard Outcomes from the experiment

• Experimental data (temperature, cooling disk
  position etc.) monitored by MS and FPEF
  (downlinked to ground via Fluid Physics
  Experiment Facility (FPEF))
• Video Images taken by MS and FPEF (downlinked
  to ground via Image Processing Unit (IPU), and
  IPU VRU Disk will be returned to ground)
• Microgravity environment data taken by
  Microgravity Measurement Apparatus (MMA).
  (downlinked to ground via Image Processing Unit
  (IPU))

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MS Architecture
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MS Major Components
Surface Velocity measurement equipment

• consists of GN2 laser, mirrors, prism, CCD
  camera, and LEDs.
• irradiates GN2 laser beam to the surface of
  liquid bridge.
• Liquid bridge which contains photochromic dye is
  colored when it is irradiated by GN2 laser.
• observes the movement of the colored spot by CCD
  Camera to measure surface velocity.

Liquid Bridge
Light Source of GN2 Laser
LEDs are used as a backlight
Mirrors, Prism
GN2 laser path
Colored spot
CCD Camera
Light Source of GN2 Laser
CCD Camera
MS conceptual diagram for Liquid Bridge Surface
Observation
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MS Major Components (Contd)
Liquid bridge formation part
MS Cassette will be installed into MS Core.
Liquid bridge formation part
MS Core MS Cassette
QDs for gas lines
Heating Disk
QDs for cooling water
MS Core
MS Cassette
MS Core
Cooling Disk
Peltier Device
Motor
Liquid Bridge
Cooling Water Inlet Outlet
Installation
Sample Pumped
Bellows for Sample Reservoir
MS Cassette
Liquid bridge formation part
GAr Supply Waste Gas Line
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Marangoni Experiment Inc20 Operations Overview
FPEF Operation
IPU Operation
MMA Operation
Assemble MS (new MS Cassette)
Install MS into FPEF
UDC/MMA Activation
MMA Data Acquisition
IPU Video Downlink/Recording
Experiment
UDC/MMA Deactivation
Exchange IPU VRU Disk
Remove MS from FPEF
Disassemble MS
FPEF Maintenance - Lamp exchange - Load connector
connection/disconnection
MS Maintenance - O-ring exchange, cleaning etc.
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Assemble MS
Assemble MS

• Attach MS Core and MS Body to MWA by using handle
  and MWA I/F tools
• Install MS Cassette to MS Core
• Conduct leak check by using MS Hand Pump
• Install MS Cassette/Core to MS Body
• Attach Fiber Optic Cable
• Adjust knob of LED/SENSOR CAL as required
• Change temperature channel as required

MS Core
MS Cassette
MS Body
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Assemble MS (Contd)
-Crew assembles MS Handle B. -is attached to MS
Core, and fixed to MWA I/F B. -has two direction
of fixing to MWA I/F B.
-is used to secure MS body to MWA. - can be
folded.
MS Handle B
MS MWA I/F A
MS Core
MS MWA I/F B
-is used to secure MS Core with MS Handle B to
MWA. -is rotatable every 45 degrees.
MS Body
MWA
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Assemble MS (Contd)
-is attached to MS Cassette to depress inside of
liquid bridge formation part.
MS Hand Pump
Flight Model
MS Cassette
MS Core
MS Body
Fiber Optic Cables
Engineering Model
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Assemble MS (Contd)
Temperature channel connector (One of three is
connected)
Knob for LED
Cover
Knob for SENSOR CAL
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Install MS into FPEF
Install MS into FPEF
diaphragm
focus ring spacer
focus ring screw
1. Remove FPEF Front Cover 2. Check 3-D Camera
settings (diaphragm and focus) 3. Install MS into
FPEF 4. Install IR Imager into operations
position 5. Connect Harnesses/Hoses between FPEF
and MS 6. Attach Experiment Cover Body 7. Connect
FPEF Payload Bus Cable 8. Connect hoses with FPEF
Silicone Filter Unit 9. Attach Experiment Cover
Plate 10. Connect video cables between FPEF and
IPU
3-D Camera setting
diameter of liquid bridge (30 or 50)
Silicone Filter Unit
IR Imager
1553B cable pass through
MS
Silicon Filter interface
Experiment Cover Body
Experiment Cover Body
Experiment Cover Plate
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FPEF Maintenance
FPEF Maintenance
Lamp exchange
Load connector connection/disconnection
1. Connect FPEF Load Connector P12 to J12 2.
Update FPEF software (Ground) 3. Disconnect FPEF
Load Connector P12
1. Remove Lamps with Lamp House Cover from
FPEF 2. Separate Lamp House Cover and Lamps 3.
Exchange Lamps 4. Install new Lamps with Lamp
house Cover into FPEF
Lamp House Cover
FPEF Load Connector P12
J12
FPEF
Lamps
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Key Points during Marangoni Experiment Operations
Category Key Point
Crew Safety Conduct leak check after assembling MS Core and MS Cassette to prevent fire during experiment. Do NOT remove more MS protective covers than identified in each step of procedures to prevent broken glass hazard.
Time Critical Operations N/A
Dos and Donts - Do NOT damage nor contaminate glass parts of Fiber Optic Cable, windows, cameras or mirrors. Check the diaphragm of 3-D Camera just before installing MS into FPEF. Do NOT rotate focus ring screw during adjusting 3-D Camera focus.
Difficulty in Ops. N/A
Possible Mis-Ops. - When inserting MS Cassette into MS Core, if you feel interference, do NOT push MS Cassette any more to prevent silicone oil leakage. At that time pull out MS Cassette once, and try again.
- Take care that washer is in correct position on
fastener to avoid binding.
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Acronyms
CCDFPEFGAr IPU IR MMA MS UDC VRU
Charge Coupled DeviceFluid Physics Experiment
FacilityGas Argon Image Processing
Unit Infrared Microgravity Measurement Apparatus
Marangoni Surface Utility DC/DC Converter Video
Record Unit
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Appendix

• Lamp housing

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Lamp housing
Front side
Upper side
Lamp 1
FPEF Lamp House Cover
Lamp 2
Front side
connection point for thermostat-wire
Front side
FPEF Lamps