The Wright Stuff Conceptual Design Review Colton Hall, Brendan Lee, David Thomas, Zak Collins, Eli Nelson, Devin Bazata September 20th 2011 Fall 2011 Rev A

Mission Overview Our BalloonSat has two main objectives. The first objective is to send petri dishes with bacteria growing on them into space to see how they are affected by the conditions of space. The three main factors that we think will affect the bacteria are temperature, ultraviolet radiation and extremely low pressure. The second objective is to collect bacteria living in the stratosphere. There have only been a few experiments concerning the bacteria living in the stratosphere and so there is very little known about them. What we hope to discover about them is what they use for energy, how they survive the UV radiation, and how they survive in the extreme cold.

Material List ItemPriceObtain from HOBO H providedprovided by COSGC active heater systemprovidedprovided by COSGC Canon SD780 ISprovidedprovided by COSGC 3 sheets of foam coreprovidedprovided by COSGC Parallax Standard Servo (P/N ) $14.29hobbyengineering.com 20 servo mounting screws$3.73rcslot.com 10 feet of Velcroprovidedprovided by COSGC 1 square foot sheet of plywood$2.50homedepot.com square plastic tube$9.65usplastic.com hollow circular plastic tube$15.54usplastic.com wireprovidedprovided by COSGC 3 batteries (9v)providedprovided by COSGC Extra batteries (9v)$23.98amazon.com 4 switches$12.00Newark.com

20 petri dishes$5.00scientificsonline.com O-ring$5.00Sears Basic Stampprovidedprovided by COSGC Aluminum foil$10.00Wal-Mart Bacteria (e. coli)$10.00sciencestuff.com Total$ Material List (continued) The remainder of the budget will be used for spare parts, for parts that may be bought as the satellite design evolves, and for other unforeseen expenses.

Basics of Design Foam core construction Aluminum foil insulation Rectangular prism shape 2 petri dishes on top (exposed) o heater beneath one Servo arm on top o holds a sterile petri dish o includes motor, plywood base, and plastic connector rod 2 petri dishes inside (Velcro connection) Heater, Basic Stamp, HOBO, camera inside Lithium batteries for power

Technical Drawings

Functional Diagram

09/17: Work on Conceptual Design Independently 09/20: Conceptual Design Due at 7:00 AM 09/24: Team Meeting (11:00 AM) 09/27: Hardware Ordering (Time by Appointment) 10/01: Team Meeting (6:00 PM) (Building) 10/04: Design Document Rev. A/B Due at 7:00 AM 10/04: Critical Design Presentation Due at 7:00 AM 10/08: Team Meeting (11:00 AM) (All tests except Freeze and Vacuum Test) (Building) 10/15: Team Meeting (11:00 AM) (Freeze Test) (Building) 10/18: Mid Semester Team Evaluation Due at 9:30 AM 10/19: Team Meeting (7:00 PM) (Vacuum Test and Repeat All Other Tests excepting Freeze Test) 10/23: Team Meeting (11:00 AM and 7:00 PM) (Redo any tests that need it) (Final Building) 10/25: Pre-launch Inspection/Bring all hardware to class 10/26: Team Meeting (7:00 PM) (Final Touch-ups) 10/27: In-class Mission Simulation Tests 10/29: Team Meeting (11:00 AM) (Final Touch-ups) (Work on LLR and DD) 11/01: LLR Presentations Due at 7:00 AM 11/01: Design Document Rev. C Due at 7:00 AM 11/02: Team Meeting (6:00 PM) (Final Touch-ups) 11/04: Final Balloon SAT Weigh-in and Turn In (Time by appointment) 11/04: DLC 270A and LRR Cards Due by 2:00 PM 11/05: LAUNCH DAY (4:45 AM - 4:00 PM) 11/05: Team Meeting (Upon Return) (Store Data from Launch) 11/08: Bring Raw Flight Data to Class 11/09: Team Meeting (7:00 PM) (Collect Data) 11/13: Team Meeting (6:00 PM) (Collect Data) 11/16: Team Meeting (6:00 PM) (Data/Prepare for Final Presentation) 11/17: HW 07 Due at 4:00 PM 11/27: Team Meeting (7:00 PM) (Prepare for Final Presentation) 11/29: Final Presentations Due at 7:00 AM/All Data Due in class 11/29: Final Presentation 11/30: Team Meeting (6:00 PM) (Finish Video and Design Document Rev. D) 12/03: ITLL Design Expo (9:00 AM - 4:00 PM) 12/03: Design Document Rev. D/Team Videos Due at Judging 12/06: Hardware Turn-in 12/08: HW 08 Due 12/14: Final Exam (4:30 PM- 7:00 PM) Schedule

Biggest Worries… o One of our biggest worries is being able to properly seperate the variables. Since we have to expose a petri dish to the UV and Cosmic radiation, we may run into problems involving temperature and the durability of the petri dish in a vacuum. o Another one of our worries is being able to get a solid vacuum seal on the petri dishes, seeing as an improper seal would invalidate all of our data.