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

2. Requests for Action RFAAuthorSolution Verify clearances of deployment PetersonProved during initial testing Make jigs to aide assembly of all the parts Peterson/ Trudy Developed method of assembling parts Electronics package needs to be taller for clearance Peterson/ Rhode Corrected in Solidworks/Corel Draw drawings Control motor speed. Avoid damage. TrudyRPM of motor is low enough that no damage will result from the motor

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

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 DateCompanyPartsPhone NumberContactAmount 12/15/2003Kinko'scopies 207.94 12/15/2003Kinko'scopies 19.20 12/17/2003Colorado Plastic Products Inc.acrylic, epoxy303-443-9271 10.67 1/15/2004R.S. Hughes Company Inc.epoxy303-371-9440 33.30 1/20/2004Omega Engineering Inc.thermistor, pressure transducer203-359-1660 114.35 1/21/2004Maxon Precision Motors Inc.motors, gearboxes650-697-9614Mike Beasley348.27 1/22/2004R.S. Hughes Company Inc.epoxy gun, mixing nozzles303-371-9440Thomas62.93 1/27/2004American DurafilmKapton508-429-8000 163.08 1/28/2004McGunkin Hardware Inc.clamps, aluminum rods, key303-443-1822 62.47 1/28/2004Colorado Plastic Products Inc.acrylic303-443-9271 10.32 1/28/2004R.S. Hughes Company Inc.mixing nozzles303-371-9440Thomas47.90 1/28/2004The Lee Companycontrol valve860-399-6281John Caron0.00 1/30/2004Radio Shackelectronics 30.84 1/31/2004Radio Shackelectronics 54.54 1/31/2004Fistell'srelay switch 30.40 2/9/2004Colorado Plastic Products Inc.acrylic303-443-9271 42.00 2/12/2004The Beverage Factorycarbon dioxide tank 53.00 Total:1,291.21

14. Questions?