Oddballs Critical Design Review Team 8: Grant Fritz, Jessica Brown, Stephanie Jalovec, Jennifer...
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Transcript of Oddballs Critical Design Review Team 8: Grant Fritz, Jessica Brown, Stephanie Jalovec, Jennifer...
OddballsCritical Design Review
Team 8: Grant Fritz, Jessica Brown, Stephanie Jalovec, Jennifer McGraw, Brian
Roth, Evan Townsend
10/18/07
Mission Statement
• The purpose of this mission is to capture video of the sky at an altitude of 30 km using a balloon satellite in order to capture images of stars as they immerge in higher altitudes.
Mission Overview• The mission is to determine the intensity of stars visible
during the day at 30km using a calibration lamp as a standard.
• The goal is to further develop the idea that a telescope can be used on a balloon satellite platform. A high altitude platform would be less expensive than a space telescope.
– Smaller telescopes can be used to get images of similar quality to large ground-based telescopes.
– With an affordable method of observation, more people will be able to have access to space imaging.
– Balloon satellite would be above the clouds, which can often prevent astronomers on earth from observing.
– Can be serviced between each launch.
The purpose of this mission is to capture video of the sky at an altitude of 30 km using a balloon satellite in order to capture images
of stars as they immerge in higher altitudes. Construct Balloon
Satellite to improve understanding of
high altitude conditions at 30 km
for under $200 dollars by 11/10/07
Images of the stars shall be captured
using a CCD video camera and a still
image digital camera.
A large helium weather balloon shall be used to acquire an
altitude of 30km
The structure of the balloon satellite shall be in the shape of a
dodecahedron.
A budget of $200 dollars shall be maintained while keeping the mass of the
balloon satellite under 800g.
The CCD camera shall be angled upward at 54°
from horizontal, mounted on one
of the faces of the upper half of the dodecahedron.
Imaging the sky at 30 km shall improve
understanding of high altitude conditions by showing what
magnitude stars can be seen during the
day.
The digital camera shall be angled
upward at 54° from horizontal and
mounted on another upward facing side
of the dodecahedron opposite the CCD
camera.
The digital camera shall be an HP
PhotoSmart digital camera.
The structure of the balloon satellite shall be in the shape of a dodecahedron.
Design• Parts
– 1500 cm2 Foam Core Provided– 1 Digital HP Photosmart E427 camera Provided– 1 GB Memory chip Provided– 1 Timing circuit kit Provided– 1 HOBO data logger Provided– 1 Heater kit Provided– 12 9Volt Batteries Provided– 12 12V Batteries Provided– 1 Roll of aluminum tape Provided– 1 Roll of Electrical tape Provided – 1 PVC tube Provided– 1 (PC164 CCD Camera) Provided by Eliot
Young– 1 Video Recorder-7 Ordered through Eliot Young– Pentax Lens for PC 164 Provided by Eliot
Young– Calibration Lamp Created by team
Design
Switch
Timing Circuit
12v Battery
HP Still Cam (2 internal AA bat)
12v Battery 12v Battery
Switch
CCD Camera
SwitchVideo Recorder
(internal battery and record button)
12v Battery
Heater
Switch
9V Battery 9V Battery 9V Battery
HOBO
External Temp Internal Temp Humidity
DesignItem Mass (g) Cost ($)
1500 cm2 Foam Core 40 5
1 Digital HP Photosmart E427 camera
219.8 99.99
1 GB Memory chip 2 27.99
1 HOBO data logger 29 49.99
1 Heater kits 34.4 5
5 Switches 15 5
12 9Volt Batteries 3 x 45 2
12 12V Batteries 4 x 14.4 2.99
1 Roll of aluminum tape 1 25
1 (PC180XS B/W Ex View Cube Camera)
25 118.85
1 MVideo Recorder-7 100 378.93
1 PVC tube 10 .50
hot glue and glue gun 1 8
Total 669.8 729.24 (although all items have been provided)
Schedule
Week 6:Oct. 22-28
Design Doc. Rev CWhip, Drop, Stair, Cold Tests
Week 7:Oct. 29- Nov. 4
Design Doc. Rev CComplete designFinish building satellite (place camera’s, HOBO, and heater in
assigned spots) Functional test
Week 8:Nov. 5-11
LRR MeetingDesign Doc. Rev C DUE (Thursday)LAUNCH Saturday morning! Be there at 5:00AM!
Week 9:Nov. 12-18
Design Doc. Rev D
Week 10Nov. 19-25
Design Doc. Rev DDesign Doc. Rev D DUE (Thursday)
Week 11Nov. 26-Dec. 2
Final Presentation
Week 12Dec. 3-9
Final Presentation DUEPresent Final Presentation in class
Job Delegation
Team Member:
Project Manager
Testing Structures Integration CNDH Systems
Grant X Imaging Test
CCD
Jessica Stair Test X CCD
Stephanie Functional Test
X CCD
Jennifer Drop Test X HP Cam
Brian Cold Test X Heater
Evan Whip Test X X HOBO
Drop Test
• We will perform 3 separate drop tests to simulate different possible landing sites– Balcony between ITLL and DLC– Balcony on East side of DLC– South Side Balcony of ITLL
Cold Test
• Hang Satellite inside cooler filled with dry ice
• Prevent satellite from actually touching the ice
Whip Test
• We shall use objects that will imitate the weight and size of the subsystems
• We will swing the satellite on a 1.5 meter string to simulate the g-forces of flight.
Subsystems Test
• Test heater for heat out put.• Test capability of CCD camera to see stars at
ground level– Ability to see 9th magnitude stars
• Test capability of HP digital camera to see stars at ground level
• Test timing circuit for functionality• Test hobo during Cold test• Test quality of DVR• Test calibration lamp for effectiveness
Final Test
Mission Simulation Test
• Test all systems for expected duration of the mission
Functional Test• Test all subsystems in
concurrence• Precedes mission sim
test