1. PROJECT SCREAM PROPOSAL Josh Yeaton Kevin Dinkel Chris Kopacz Conrad Schmidt Chris Warren Dillon Thorse 09.23.08

2.  Ascend to an altitude between 25,000 – 30,000 meters to better understand how sound behaves in near space conditions.  It is a known fact that sound cannot be heard in the vacuum of space because sound waves require a transport medium.  We hypothesize that as our BalloonSat nears the silence of space, sound amplitude will decrease as a function of altitude.  We theorize that a 261.33 Hertz middle C, played at a constant decibel level on ground, will decrease in amplitude as altitude increases and air pressure decreases.  Project SCREAM shall also produce photographic images of the horizon of Earth using the digital camera provided.

3. DIM: 30cm x 14cm x 14cm Sound Chamber Component Placement

4. Weight Budget ComponentWeight (grams) Foam Core150.00 9 volt Battery (3)101.40 12 volt Battery (1)33.80 Canon A570IS Digital Camera w/ Memory Card220.00 Timing Circuit60.00 Hobo Temperature Data Logger29.00 Hobo Atmospheric Pressure Data Logger29.00 Switches (2)20.00 Heater Circuit60.00 Korg CA30 Chromatic Tuner66.80 Sony ICDP620 Digital Voice Recorder50.00 Insulation and Styrofoam Chamber100.00 AAA Battery (4)30.40 Total950.40

5. Price Budget ComponentPrice Foam Core(provided) 9 volt Battery (3)(provided) 12 volt Battery (1)(provided) Canon A570IS Digital Camera w/ Memory Card(provided) Timing Circuit(provided) Hobo Temperature Data Logger(provided) Hobo Atmospheric Pressure Data Logger(provided) Switches (2)(provided) Heater Circuit(provided) Korg CA30 Chromatic Tuner$20.00 Sony ICDP620 Digital Voice Recorder$57.88 Insulation and Styrofoam Chamber$20.00 AAA Battery (4)$10.75 Total$108.63

6. Impact: Stair Test Drop Test Whip Test Systems: Components Test Dry Ice Test

7.  Awareness.  Communication Techniques  Safety Glasses  Gloves  Structural Test Safety (bystanders and team members)  Vigilance Around Sharp Objects and Electric Currents

8.  All necessary systems such as the HOBO will be on board to take fundamental data readings.  The satellite will stay above zero degrees Celsius because of the on board heater and insulation.  Primary experiment is separate from the on board camera and HOBO data loggings.  Experiment will consist of a sound chamber, a sound emitter, and a sound receiver.  Satellite will be structurally sound so that all the experiments will be performed, logged, and retrieved.

9.  Team SCREAM will be ready to leave with our satellite at 0500 on November 27.  Team SCREAM will arrive at Windsor, Colorado at 0730 ready to launch.  1.5 hours before the flight team SCREAM will do a systems and structures inspection.  Team SCREAM will then secure the satellite to the balloon by running the rope through the satellite.  A representative from Team SCREAM will hold the satellite in a line with the other satellites and release it when appropriate.  Team SCREAM will then locate the satellite.  Once team SCREAM has found the satellite they will turn off the systems and inspect it to see if there is any structural damage.  Team SCREAM will then secure the satellite in preparation to collect data.  Team SCREAM will eat a well-deserved lunch after a long day of launching and chasing.

10. Recorder Recorder Power HOBO Pressure Sensor 12 V Battery Switch Speaker Speaker Power Timer External Temp HOBO 9 V Battery Switch Heater 9 V Battery Camera Camera Power Source

11.  Joshua Yeaton: Team Leader/Microphone and Speaker Configuration  Kevin Dinkel: Budget Organization/Structures  Dillon Thorse: Structures/Camera  Conrad Schmidt: Soldering/Electrical  Chris Kopacz: Structures/Camera  Chris Warren: Microphone/Speaker Configuration

12.  As all members of the team are aerospace engineering majors with little experience in their respective areas, these designations are somewhat flexible.  If anyone needs help with a specific assigned part of the satellite, the rest of the team will assist as needed.

13.  Week 1, 9/15-9/21: All members work on proposal assignments. Presentation construction on 9/21.  Week 2, 9/22-9/28: Proposal due 9/23. Team Presentations 9/23. Complete proposal.  Week 3, 9/29-10/5: HW 05 due 10/02. Complete design for DD Rev A next week. Order hardware.  Week 4, 10/6-10/12: DD Rev A due 10/9. Start construction and begin testing. DD Rev B for next week.  Week 5, 10/13-10/19: DD Rev B due/Presentations due 10/14. Work on prepping for in-class demonstration of hardware. Final design prototyping.  Week 6, 10/20-10/26: Team in-class demonstrations 10/23. Complete building final design.  Week 7, 10/27-11/2: Final Testing. Cold test must be completed. BalloonSat completed on weekend.

14.  Week 8, 11/3-11/9: In-class mission simulation 11/4 and 11/6 – BALLOONSAT COMPLETED. LRR Cards due 11/6. DD Rev C due 8:00 AM 11/6. Launch Prep.  Week 9, 11/10-11/16: Final BalloonSat Weigh-in and TURN IN 2:00 PM 11/14. LAUNCH DAY 11/15. LRR Presentations 11/11. Launch prep prior to launch.  Week 10, 11/17-11/23: Bring raw flight data 11/18. Process flight data.  Week 11, 11/24-11/30: Fall Break. Work on final presentation and DD Rev D.  Week 12, 12/1-12/7: DD Rev D Due 12/2. ALL presentations due 12/2. HW 06 Due.

15.  Having an audible/recordable sound  Lots of electronics, one heater enough?  Satellite weight, lots of bulky items  Testing, components are tightly packed, no room for movement/error  Recording Altitude?