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JWST

Preliminary Design Review

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Team 8: Natalia Bautista, Yuhuai Song,

Jian Qin, Benjamin Noriega

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  1. An overview of the project and team's objectives.
  2. A description of the final design and how it meets the project objectives
  3. A description of each component of the design
  4. A plan for completing the design by the Final Design Review
    • A detailed to-do list of all aspects required in completion of the project. Show:
      • High Priority to-do items that must be completed. Each such item should have a due date no later than week 9, and individuals responsible.
      • Second priority to-do items, that will be completed time permitting.
    • A Gantt chart with task assignment for the rest of the quarter
  5. A plan for testing the design
  6. List any concerns that need to resolved
  7. Tips for Clarity. Remember, the rest of the class has not seen your design, so it is important that they clearly understand it. Figures are key. Please pay attention to:
    • Selecting the clearest views (3D, Top, Side, Interior, Cross Section, views etc.)
    • Use good colors with consistency between images.
    • Use annotations (i.e. labels with arrows to parts)
    • Step-by-step figures that show the stages of part use.

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Project Objectives

Efficiently replicate three main components of the JWST

  1. Primary Mirrors
  2. Secondary Mirror
  3. Gantry

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Annotated drawing of final design

ben

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Primary Mirrors

  1. Must sport gold color

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  • Hexagonal Mirrors

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  • ‘Parabolic’

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Drawing of primary mirror or actual image

Drawing of primary mirror or actual image

Figure 1: Cut out aluminum hexagons w/ first attempt at gold tint

ben

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‘Parabolic’ Shape

  • Riser

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  • Hexagonal Mirror

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  • Mount

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  • Acrylic Base Plate

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natalia

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Lasers

  1. Three sets of laser gun sights. One of them will be mounted on the wall of the sponsor’s lab. Two would be on the sponsor’s tripods.

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  • Horizontal distances between the lasers and the primary mirrors are measured.

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tony

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Secondary Mirror

  • Curvature

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  • Manufacturing

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Annotated drawing of final design

Annotated drawing of final design

Figure: Top left - 3d printed attempt at curvature, Right - designed curvature (to be machined)

tony

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Gantry

  • Height

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  • Rigidity

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3) Angle of Reflection

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ray

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Currently…

  • Support Structure assembled
  • Primary Mirror Back Plane + wings assembled
  • 3D Printing of mounts complete
  • Have begun assembling Primary Mirror (stationary)
  • Gantry and secondary mirror in process of being manufactured.

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Figure : Top left - 3d printed mounts, Bottom left- assembled structure, Right - tint to be applied

ray

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To do…

High Priority

  • Finish applying tint to hexagons w/spray adhesive (Ben & Natalia)

(Physical demonstration)

  • Center of Gravity (In Progress - Ben)
  • Manufacture secondary mirror (CNC)
    • (Yuhuai)
  • Complete manufacturing of gantry mechanism
    • (Jian)
  • Design and manufacture the mount for the lasers
    • (Everyone)
  • Mount Aluminum Mirrors to 3d printed mounts
    • (Ben & Natalia)

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Second Priority

  • Radiation Shield

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  • Placing of lasers - design control system

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Gantt Chart

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Goal/week

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9

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03/14

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Print Mounts

x

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Tinting Mirrors

x

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Mounting Primary Mirrors

x

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Assemble gantry

x

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CNC Secondary Mirror

x

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Assemble

x

x

x

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Improving on details

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x

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x

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Final Presentation

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x

x

natalia

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Plan for testing

  • Practice Demonstration

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  • Moving structure

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  • Will need to determine location of laser to reach desired reflections

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Concerns

Still deciding if secondary mirror should have tint applied or be be polished to mirror finish.

Desired tint will be glued onto aluminum hexagons.

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ray

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Questions?

Thank you.

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