PROJECT SCREAM PROPOSALJosh YeatonKevin DinkelChris KopaczConrad SchmidtChris WarrenDillon Thorse09.23.08

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.

DIM: 30cm x 14cm x 14cmSound ChamberComponent Placement

Weight Budget

ComponentWeight (grams)Foam Core150.009 volt Battery (3)101.4012 volt Battery (1)33.80Canon A570IS Digital Camera w/ Memory Card220.00Timing Circuit60.00Hobo Temperature Data Logger29.00Hobo Atmospheric Pressure Data Logger29.00Switches (2)20.00Heater Circuit60.00Korg CA30 Chromatic Tuner66.80Sony ICDP620 Digital Voice Recorder50.00Insulation and Styrofoam Chamber100.00AAA Battery (4)30.40Total950.40

Price Budget

ComponentPriceFoam 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$20.00Sony ICDP620 Digital Voice Recorder$57.88Insulation and Styrofoam Chamber$20.00AAA Battery (4)$10.75Total$108.63

Impact:Stair TestDrop TestWhip TestSystems:Components TestDry Ice Test

Awareness.

Communication Techniques

Safety Glasses

Gloves

Structural Test Safety (bystanders and team members)

Vigilance Around Sharp Objects and Electric Currents

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.

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.

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

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.

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.

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.

Having an audible/recordable soundLots of electronics, one heater enough?Satellite weight, lots of bulky itemsTesting, components are tightly packed, no room for movement/errorRecording Altitude?

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