Matt Capron, Brian Gonzales, Kaia Jerde, Harrison McLean, Anirudh Sarsam, Brett Traub

10-18-07

Objective◦ The object of this mission is to test the amount of

light intensity gathered by solar cells at different altitudes and take a panoramic image at near space.

◦ The balloon satellite will take the instruments to a near space altitude where at intervals they will measure the amount of light intensity collected.

◦ Two cameras angled so they slightly overlap will be used to take pictures of the horizon. These will depict a much larger space than could be achieved with one camera.

G.1    

Panoramic Rays will test the amount of light intensity gathered by solar cells at different altitudes up to approximately 30,000 km and take a panoramic image at near space.

O.1    

Build the Panoramic Rays BalloonSat for under $200 and deliver it on time prepared to launch by 11-10-07.

  S.1.1  

Have a working BalloonSat which has met all testing requirements in time for launch.

  S.1.2   Successfully operate under Cold Test.

  S.1.3   Structure must be intact after Whip Test.

  S.1.4   Structure must be intact after "Stair" test.

O.2    

Measure the light intensity of the atmosphere as it varies with altitude.

  S.2.1  

Measure the voltage which is created by solar cells attached to the BalloonSat.

    S.2.1.1 Measure the Voltage within ±.2mV.

    S.2.1.2 Take measurements every 30m during the ascent.

O.3    

Take two pictures at approximately the same instant from two cameras mounted inside the BalloonSat.

  S.3.1  

Take two pictures within 1 second of one another allowing menial time for movement.

  S.3.2  

When BalloonSat is recovered, combine images to create a panoramic image.

◦ Parts Ordered 8 Solar Cells Voltage input cable

◦ How long will it take to get the parts? Have By 25 October 2007

Block Diagram

Schedule

September 20, 2007 Proposal design completed: CoDr Presentation

September 26, 2007 Team meeting @ 4:00; begin revision of design

September 30, 2007 Have design completed

October 1, 2007 Design Document Revision A due

October 3, 2007 Team meeting @ 4:00; Design prototype

October 4, 2007 Begin second revision of design

October 6, 2007 All hardware being used is known

October 7, 2007 Team meeting @ 11:00; find all hardware

October 10, 2007 Team meeting @ 4:00; begin building of design

October 17, 2007 CDR slides and Design Document Revision B due

October 20, 2007 Team meeting @ 11:00; construction

October 21, 2007 Team meeting @ 4:00; construction

October 22, 2007 Team meeting @ 4:00; construction

October 24, 2007 Team meeting @ 4:30; testing

October 28, 2007 Cold test

November 2, 2007 Team meeting @ 4:00; test final design

November 8, 2007 LRR meeting and Design Document C due

November 9, 2007 Team meeting @ 4:00

November 10, 2007 LAUNCH DAY!!!

November 12, 2007 Team meeting @ 4:00

November 25, 2007 Team meeting @ 2:00

November 29, 2007 Design Document Revision D due

December 1, 2007 Team meeting @ 12:00

December 4, 2007 Final Presentation due!

Qty Hardware Price2 HP Photosmart N/A1 Timing Circuit N/A1 Heater N/A6 Battery (9v) N/A8 Solar Cell $30.001 Voltage Input Cable $8.005 On-Off Switch $3.0010 LED Lights $1.50

Total $42.50

Qty Hardware Weight (g)2 HP Photosmart Camera 2601 Timing Circuit 401 Heater 304 Battery (9v) 605 Solar Cell 721 Voltage Input Cable 54 On-Off Switch 201 HOBO Logger 29

Construction Material 100

Total 616

Systems Test Each internal component will be tested for a length of time

similar to the flight time We will be looking to see if anything was wired incorrectly

in a component ◦ Causing battery to drain faster than it should ◦ Incorrect data being collected

Once subsystems completed, entire system as a whole tested in similar way.

Heater Test Place the sat in a cooler filled with dry ice for 2+ hours If the temperature inside the balloon sat drops too low for

its components to work, change the insulation design.

Drop Test Construct prototype Dropping model from approximately twenty feet Should give us idea of how well the balloon sat will hold up

on impact If it fails, it will be strengthened with new shape and/or

materials. Whip Test Determine whether the system can hold its structure during

the descent Model tied to a short string and swung as fast as possible Simulate the forces that will act on it during descent. If it fails this test, we will reattach the internal systems of

the sat more securely

System/Heat Test◦ No problems expected with heater/timing circuits◦ Less than 2.5 Volts to HOBO Logger

If more -> Zener Diode Drop/Whip Test

◦ Don’t expect current structure design to be perfect with such a unique design.

◦ Plenty of extra mass allotted for structural reinforcement.