1. MEP (Martian Environmental Pod) 3/15/2004 Aerospace Engineering Department University of Colorado-Boulder Interim Review #2

2. Request for Action RFAAuthorSolution Cannot weld aluminum shaft to petals PaloKey the aluminum shaft and aluminum sleeve No welding near acrylic parts

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

4. Design Changes Greenhouse/Pressure System –Molding tool design Thermal Shield/Structure –Keyed aluminum shaft and aluminum sleeve –New assembly order Electronics/Software –Trimpot

5. Molding Tool New design allows for the use of a furnace instead of internal heater Shelled out to reduce heating time Rolling method is done by hand on top of grooved plate

6. Keyed Shaft and Sleeve Keyed aluminum shaft to eliminate the need for welding Key –0.1’’ x 0.2’’ x 0.3’’ Aluminum shaft –Depth: 0.1’’ Aluminum sleeve –Depth: 0.2’’

7. New Assembly Order

8. Greenhouse/Pressure System Molding tool is complete Tested for functionality: –Control valve –Regulator and CO 2 tank

9. Thermal Shield/Structure Completed petals 1 - 5 using new epoxy Machined parts for petals 6 - 10 Machined electronics box parts

10. Electronic Setup

11. Software Setup

13. Electronics Testing Verified functional operation of: –Pressure transducer –Thermistor –Determined conversion coefficient –LabView

14. Current Issues Laser cutter availability/reliability –Solution: sand edges for even mating surface Outdoor testing -Solution: car inverter for power supply and data acquisition system

15. To Be Completed: Greenhouse/Pressure System Molding plate (3/19/04) Shape Kapton for deployable greenhouse (3/31/04) Construct greenhouse around acrylic rings (4/2/04)

16. To Be Completed: Thermal Shield/Structure Finish constructing thermal shield (3/19/04) Machine and construct base structure (3/28/04) Machine aluminum shaft and sleeve (3/31/04)

17. To Be Completed: Electronics Integration of Trimpot (3/28/04) Finish Circuit (4/2/04) –Copper Custom Plate

18. Integration Fasten greenhouse to mounting box (3/28 – 3/31) Assemble final structure (3/28 – 4/2) Integrate pressure and power sources with electronics package (3/28 – 4/2)

19. Schedule Progress

20. DateCompanyPartsPhone NumberAmount 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, gearboxes650-697-9614$348.27 1/22/2004R.S. Hughes Company Inc.epoxy gun, mixing nozzles303-371-9440$62.93 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 nozzles303-371-9440$47.90 1/28/2004The Lee Companycontrol valve860-399-6281$0.00 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 $109.90 2/25/2004McGunkin Hardware Inc.clamps, gas line $117.56 3/1/2004Colorado Plastic Products Inc.acrylic $20.50 3/10/2004Hobbytown USA Inc.CA glue $46.37 Total:$1,532.54

21. Questions?