jem meis inc1920 31407 marangoni experiment inc19/20

1 Training Purposes OnlyJEM MEIS INC1920 31407JMU-081198(Ver. 1.0)

JEM MEIS INC1920 31407

Marangoni Experiment Inc19/20

Notice : This technical data is furnished on the condition that it will be used by and disclosed to the receiving Cooperating agency and its contractors and sub contractors only for the purposes of fulfilling the cooperating agency’s responsibilities under the Space Station Intergovernmental Agreement (IGA) and Memorandum of Understanding (MOU). It shall not be used for any other purpose, nor disclosed or retransferred to any other entity or government without prior written permission of the Japan Aerospace Exploration Agency (JAXA).

Instructor: Yuki Kawai 　　　 Takuya Takami

([email protected]) ([email protected])


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.


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

Lesson Outline


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.

Marangoni 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))

Onboard Outcomes from the experiment


MS Architecture

MS (Marangoni Surface) is one of FPEF Experiment Cell, and is able to generate Marangoni convection and measure surface velocity of liquid bridge.

MS consists of three components. Crew member assemble/ disassemble MS.

Install to Install to FPEFFPEF

Liquid bridge formation part

MS Body- has mechanical/ signal/ power interfaces with FPEF. - mounts Surface Velocity Measurement Equipment.

-forms liquid bridge up to 60mm length and creates temperature gradient between heating disk and cooling disk.

Heating disk: 90 deg C (maximum) Cooling disk: 5 deg C (minimum)

MS Core

MS Cassette

-contains heating disk and cooling disk of 30mm in diameter.-has optical windows.

-contains silicone oil (viscosity: 5cSt or 10cSt) with small particles/ photochromic dye.

-crew exchanges MS Cassette as a unit.

MS

30mm in diameter

60mm maximum

liquid bridge


MS conceptual diagram for Liquid Bridge Surface Observation

CCD Camera

Light Source of GN2 Laser

Mirrorｓ , Prism

Liquid Bridge

MS Major Components

Surface Velocity measurement equipment

Light Source of GN2 Laser

GN2 laser path

CCD Camera

LEDs are used as a backlight

Colored spot

- 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.


MS Core

MS Cassette

Liquid Bridge

Sample Pumped

Heating Disk

Cooling Disk

Bellows for Sample Reservoir

GAr Supply & Waste Gas Line

Cooling Water Inlet & Outlet

Peltier Device

Motor

Installation

MS Cassette will be installed into MS Core.

MS Major Components (Cont’d)


QDs for cooling water

QDs for gas lines

Liquid bridge formation part MS CoreMS Cassette

MS Core MS Cassette



Marangoni Experiment Inc20 Operations Overview

:Crew operation necessary.

:Ground operation.

LEGEND:

Install MS into FPEF

Experiment

Assemble MS (new MS Cassette)

UDC/MMA Activation

Remove MS from FPEF

UDC/MMA Deactivation

MMA Data AcquisitionIPU Video Downlink/Recording

Disassemble MS

MS Maintenance- O-ring exchange, cleaning etc.

Exchange IPU VRU Disk

FPEF Operation IPU Operation MMA Operation

FPEF Maintenance- Lamp exchange

- Load connector connection/disconnection


Assemble MS

1. Attach MS Core and MS Body to MWA by using handle and M

WA I/F tools

2. Install MS Cassette to MS Core

3. Conduct leak check by using MS Hand Pump

4. Install MS Cassette/Core to MS Body

5. Attach Fiber Optic Cable

* Adjust knob of LED/SENSOR CAL as required

* Change temperature channel as required

Assemble MS

MS Body

MS Core MS Cassette


MS MWA I/F B

MS Handle B

MS Core

-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 Core with MS Handle B to MWA.

-is rotatable every 45 degrees.

MS Body MWA

MS MWA I/F A

-is used to secure MS body to MWA.

- can be folded.

Assemble MS (Cont’d)


Fiber Optic CablesMS Body

MS Hand Pump

MS Cassette

-is attached to MS Cassette to depress inside of liquid bridge formation part.

Engineering Model

Flight Model

MS Core



Cover

Knob for LED

Knob for SENSOR CAL

Temperature channel connector

(One of three is connected)



1. Remove FPEF Front Cover2. Check 3-D Camera settings (diaphragm and focus)3. Install MS into FPEF4. Install IR Imager into operations position5. Connect Harnesses/Hoses between FPEF and MS6. Attach Experiment Cover Body7. Connect FPEF Payload Bus Cable8. Connect hoses with FPEF Silicone Filter Unit9. Attach Experiment Cover Plate10. Connect video cables between FPEF and IPU

IR Imager

MS

Experiment Cover Plate Experiment Cover Body

Silicon Filter interface

1553B cable pass through

Experiment Cover Body

Silicone Filter Unit

diaphragm


focus ring spacer focus ring screw

3-D Camera setting


diameter of liquid bridge (30 or 50)


1. Connect FPEF Load Connector P12 to J122. Update FPEF software (Ground)3. Disconnect FPEF Load Connector P12

FPEFLamps

FPEF Maintenance

FPEF Maintenance

Lamp exchange

1. Remove Lamps with Lamp House Cover from FPEF2. Separate Lamp House Cover and Lamps3. Exchange Lamps4. Install new Lamps with Lamp house Cover into FPEF

Load connector connection/disconnection

FPEF Load Connector P12

J12

Lamp House Cover


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 Don’ts - 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.

Key Points during Marangoni Experiment Operations


Acronyms

CCDFPEFGArIPUIR MMAMSUDCVRU

Charge Coupled DeviceFluid Physics Experiment FacilityGas ArgonImage Processing UnitInfraredMicrogravity Measurement Apparatus Marangoni SurfaceUtility DC/DC ConverterVideo Record Unit


Appendix

-Lamp housing


Lamp housing

Front side

Front side

Front side

FPEF Lamp House Cover

FPEF Lamps

Upper side

Lamp 1

Lamp 2

connection point for thermostat-wire

jem meis inc1920 31407 marangoni experiment inc19/20

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