MEP (Martian Environmental Pod) 2/16/2004 Aerospace Engineering Department University of Colorado-Boulder Interim Review
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
x 10 Electronics Package Platform Mounting Box Greenhouse Thermal Petals
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
New Circuit Design
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
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
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
Current Issues: Electronics/Software LabView class –Trying to take course to learn software programming –High risk if taken through the ITLL
Additional Parts Molding tool Acrylic ring for greenhouse manufacturing Aluminum axle Aluminum sleeves for petal 1 Mounting bracket for motor
Schedule Progress
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)
Budget Analysis DateCompanyPartsPhone NumberContactAmount 12/15/2003Kinko'scopies /15/2003Kinko'scopies /17/2003Colorado Plastic Products Inc.acrylic, epoxy /15/2004R.S. Hughes Company Inc.epoxy /20/2004Omega Engineering Inc.thermistor, pressure transducer /21/2004Maxon Precision Motors Inc.motors, gearboxes Mike Beasley /22/2004R.S. Hughes Company Inc.epoxy gun, mixing nozzles Thomas /27/2004American DurafilmKapton /28/2004McGunkin Hardware Inc.clamps, aluminum rods, key /28/2004Colorado Plastic Products Inc.acrylic /28/2004R.S. Hughes Company Inc.mixing nozzles Thomas /28/2004The Lee Companycontrol valve John Caron0.00 1/30/2004Radio Shackelectronics /31/2004Radio Shackelectronics /31/2004Fistell'srelay switch /9/2004Colorado Plastic Products Inc.acrylic /12/2004The Beverage Factorycarbon dioxide tank Total:1,291.21
Questions?