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MEP (Martian Environmental Pod)

This document reviews the current progress and challenges faced in the design and development of the Martian Environmental Pod (MEP). It outlines key changes in the greenhouse and pressure system, new deployment methods, and issues regarding the thermal shield and electronics. Progress includes the design of circuits with operational amplifiers and transistors, transitioning from SolidWorks to Corel Draw for prototype drawings, and addressing manufacturing challenges. This review highlights the critical path elements and budget analysis for ongoing work.

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MEP (Martian Environmental Pod)

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  1. MEP(Martian Environmental Pod) Interim Review 2/16/2004 Aerospace Engineering Department University of Colorado-Boulder

  2. Requests for Action

  3. Greenhouse x 10 Mounting Box Thermal Petals Electronics Package Platform

  4. Design Changes • Greenhouse/Pressure System • New deployment method for greenhouse • Circular top will be secured by an acrylic ring inside of the greenhouse • Thermal Shield • Material of axle is aluminum • Electronics/Software • Changed design of circuit to include: • Op Amp • Transistor • Diode • Capacitor

  5. New Circuit Design

  6. Progress • Solidworks drawings → Corel Draw • Prototypes of petals 7-10 • Machined/Assemblied • Tested • Prototype circuit on solderless breadboard • Demonstration version of circuit on wire wrap breadboard

  7. Current Issues: Greenhouse/Pressure System • Kapton is too stiff to roll for deployment • Molding tool for new design • Difficulty attaching circular top to cylindrical base • Acrylic ring will be secured inside the top of the greenhouse to ease manufacturing

  8. Current Issues:Thermal Shield • During initial testing, shear stress was too great at the rotation point on the petals. • Aluminum sleeve fits over the outermost petal and is welded to the axle to distribute the torque applied. • Runs half the length of the outermost petal

  9. Current Issues:Electronics/Software • LabView class • Trying to take course to learn software programming • High risk if taken through the ITLL

  10. Additional Parts • Molding tool • Acrylic ring for greenhouse manufacturing • Aluminum axle • Aluminum sleeves for petal 1 • Mounting bracket for motor

  11. Schedule Progress

  12. Critical Path Elements • Machining acrylic parts (1/12 – 2/23) • Assemble petals and base structure (2/2 – 3/19) • Machine/construct molding tool (2/16 – 3/8) • Manufacture greenhouse (2/9 – 3/19) • Test pressure system (2/16 – 3/1) • Build final soldered circuit (2/23 – 3/15) • Develop software using LabView (2/23 – 3/19)

  13. Budget Analysis

  14. Questions?

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