Team Pegasus MSF
SatElysium
Critical Design Review
Jordan Burns, Brenden Hogan, Miranda Link, Cody Spiker,
Chris Dehoyos, Hemal Semwal
October 4th, 2011
Mission Overview
• Mission Statement:
• “To test the effects of high altitude flight upon a closed contatiner containing
bacterium and recording their response to discover if harsh high altitude
effects bacterial reproduction and survival.”
• Objective:
• Test and record the effects of a near space environment on several cultures
of Streptococcus mutans.
• Purpose:
• Determine how bacteria cultures respond to the lack of pressure, extreme
temperatures, and radiation present in near-space.
• Why:
• Test the validity the of the recorded results of the 1967 flight of Surveyor III.
According to their results, we think that we will find that the bacteria not
only survive, but actually thrive in the harsh environment of space.
Requirements Flow-Down Level 0
Level
Requirement
A
0
B
C
D
E
Description
Construct a BalloonSat that shall survive an ascent to 30 km
above the surface of Earth and the following decent while
maintaining complete functionality.
The weight of SatElysium shall not exceed 850 grams, nor a
budget of $370.
SatElysium shall safely transport 6 samples of streptococcus
mutans during its flight, studying the effects of temperature
and radiation in the stratosphere on the bacteria.
The streptococcus mutans samples shall be recovered and
analyzed post-flight.
SatElysium shall carry a camera payload to document
footage of the flight of the exterior of the satellite.
Origin
Mission
Statement
Requirements Flow-Down Level 1
Level
1
Requirement
Description
Origin
A.1
Build a cubical structure that measures 21 cm in height, width, and length out of foam
core, hot glue, and aluminum tape. The structure shall contain a rod that shall attach the
satellite to the flight string for the duration of the flight.
B.1
The weights of all components shall be monitored during build and the entire satellite
shall be weighed prior to launch.
Level 0
B.2
Miranda Link shall maintain an updated budget and keep all team members informed of
its status.
C.1
Three separate environments shall be created on board the satellite: one that is insulated
and heated, one that has no heater, and one that has no heater and is expose to
radiation.
C.2
Samples shall be secured to the structure of the satellite with velcro.
C.3
Samples shall contain the bacterium streptococcus mutan.
C.4
Temperature and radiation data shall be collected at regular intervals by a system on
board
D.1
Obtain access to a microscope that is of sufficient power to analyze our microbes
D.2
Analyze microbes before and after flight as well as conducting a variety of ground control
test.
E.1
Appropriate space for the system in design phases as well as a way for the camera to see
out of the satellite.
E.2
Install on board the satellite and program with proper instructions.
Design
• Design
• 21 cm cube
• 2 levels
• Bacteria - 6 different samples, 3 locations with varying
conditions
•
•
•
•
Radiation
Temperature
Heated and isolated
Ground control (4) samples
• Experiment structure
• Petri-dish orientation – tilted for space
• Motorized door to expose one sample to the outside environment
• Petri-dish support structure
• Analysis of Bacteria (before and after flight)
• Colony Count (avg.)
• Color
• Spores
Design
• Microcontroller
•
•
•
•
Pressure
Temperature
Light
Hobo Sensors
• Heater (2)
• For technical components and (1) bacteria sample
Functional Block Diagrams
Design
Parts:
Solder
Foam Core
HOBO
Arduino Pro
Digital Camera
Heating System
Divided Petri
Dishes
9 volt Batteries
Aluminum Tape
Humidity & Temp. Sensor
Styrofoam
Live Strand of Streptococcus Mutans
AGAR
Motor
Light Sensor- NOT ORDERED
Pressure Sensor – NOT ORDERED
Schedule
• 9/12/11: Divide tasks and submit
individual sections by 9/13/11
• 9/14/11: Team meeting/Take ITLL Tour
to get access
• 9/15/11: Finalize Proposal
• 9/16/11: Submit Proposal
• 9/19/11: Team meeting for Design
Presentation
• 9/20/11: Conceptual Design Review
Presentation
• 9/22/11: Team meeting to decide parts
order forms.
• 9/27/11: Order satellite hardware
• 9/28/11-10/7/11: Build and test
prototypes. Grow first set of bacteria for
ground control.
• 10/8/11-10/13/11: Complete testing
and design modifications.
• 10/16/11-10/23/11: Construct
BalloonSat.
• 10/23/11: Satellite completion
• 10/25/11: Pre-Launch Inspection
• 10/27/11: In class mission simulation
• 11/01/11: Launch readiness review
• 11/04/11: Final BalloonSat Weigh in
and turn in
• 11/05/11: Launch and Recovery
• 11/06/11: Meet to review data
• 11/14/11: Review final report
• 11/21/11: Complete final report
• 11/29/11: Final Team Presentations and
Report
• 12/03/11: Design Expo
Test Plan
• Our testing will occur in two separate phases.
• The first of these phases will take place during the weekend of October 7-9.
• Structural integrity tests
• Whip test
• Drop test
• Roll test
• The second set of tests will occur after we have all of our materials gathered and
ready to perform the necessary experiments.
• The Incubation and Vacuum Chamber
• The Cooler test will be the last thing
•
need the entire completed BalloonSat ready to run a full-time data collection trial with all components
of the working spacecraft in order.
• The software/hardware testing will occur repeatedly throughout our entire
building process as things will need to be adjusted every so often.
Testing
• Phase I: Structural Testing
• Drop/ Roll Test
• Roll down flight of stairs
• Drop from a height of 15 meters
• Whip Test
Different starting orientations
to ensure proper testing
• Spinning the Balloonsat by the tether running through it.
• Making sure that the balloonsat can withstand the forces acting upon it
during the flight environment.
Testing cont’d
• Phase II: Scientific Materials Testing
• Incubation Test
• Temperature, light, and pressure controlled environment to have a sample.
• Grown bacteria cultures throughout the semester to analyze a “natural” growth pattern.
• Vacuum Chamber Test
• Hand in Hand with the incubation test, merely used as a ground test to show the ground
effects of the bacteria with a “zero pressure” environment
• Software / Hardware Testing
• Recursive tests involving the wiring and technical setup of the camera and temperature
sensor arrangement to allow for different capturing intervals of the camera and data
collections by the individual sensors that we have.
• Cooler Test
• Final test of our satellite. Will ensure that all the technical components will last for the
duration of an entire flight sequence at temperatures exceeding -70°F.
Expected Results
• We expect to observe bacteria response,
• bacterium count, health, reproduction, death and other
anomalies
• Compare resulting bacterium tests of both the baseline as
well as the space bacteria.
• use a microscope
• Specifically look at spore count
• We expect to find that the bacteria will be resilient enough to
survive in the harsh environment.
• Since our satellite will have three separate environments for
testing, there is a real chance of seeing a change between
each environment.
Budget
ITEM
SUPPLIER
PRICE
US flag
Solder
Foam Core
Hobo Data Logger
Digital Camera
Heating system
Aluminum Tape
9 volt battery
Arduino Uno
Arduino Ambient Light Density
Cds Photoresistor Sensor
Gateway Class
Gateway Class
Gateway Class
Gateway Class
Gateway Class
Gateway Class
Gateway Class
Gateway Class
SparkFun Electronics
Biozoner
Provided to us
Provided to us
Provided to us
Provided to us
Provided to us
Provided to us
Provided to us
Provided to us
$29.95
$4.50 + $15 S&H
Weight
(g)
<1 g
<1 g
<100 g
30 g
130 g
100 g
<3 g
150 g
<5 g
40 g
Quantity
Total
1
1
3
1
1
1
1
7
1
1
$0
$0
$0
$0
$0
$0
$0
$0
$29.95
$19.50
Pressure Sensor
SparkFun Electronics
$15.96 +$2 S&H
1g
1
$17.96
Humidity & Temp. Sensor
SparkFun Electronics
$9.95 + $2 S&H
<20 g
1
$11.95
Styrofoam
Live Strand of Streptococcus
mutans
McGuckin’s Hardware
Ward Science
$3.24
$9.95 + $7.80S&H
<30g
1.5 g
1
1
$3.24
$17.75
1
$62.97
3
1
$43.14
$26.45
1
$15.00
$40.80 + $22.17S&H
AGAR
Scientific Strategies
Stepper Motor
Petri Dish (20)
Anaheim Automation
Carolina Biological Supply
Company
Safeway
Dry Ice
Total Weight = 699.6 g
Total Price = $249.92 incl. S&H
$14.38
$8.50 +$17.95 S&H
<$15.00
22.7 g
<20 g
Team Organization
Jordan Burns
Christopher Dehoyos
-Video Director and Testing Manager
-responsible for designing all tests on
the BalloonSat
-oversee extra credit video
9130 Darley North Hall, Boulder,
CO 80310
(210) 573-8448
Christopher.dehoyos@Colorado.ed
u
Project Manager
-responsible for all management and
scheduling
-thermal engineer
9118 Andrews Hall, Boulder, CO
80130
(719) 337-5357
Jordan.Burns@Colorado.edu
-Lead Electrical Engineer
-responsible for circuits and
mechanisms
9023 Crosman Hall, Boulder, CO
80310
(303) 483-1161
brenden.hogan@colorado.edu
Cody Spiker
Miranda Nicole Link
-Design and Budget Management
-records of all team expenses,
within budget and out of pocket.
590 Merlin St., Lafayette, CO
80026
(970) 372-8873
Miranda.link@Colorado.edu
Brenden Hogan
Hemal Sewal
-Lead Structural Engineer
-responsible for overseeing the
construction of the satellite
9038 AdenHall, Boulder, CO,
80309
(719)-339-7570
Hemal.Sewal@Colorado.edu
-Science Manager
-responsible for all control tests on the
bacteria and the growth of bacteria
cultures pre-launch
9023 Crosman Hall, Boulder, CO
80310
(970) 589-5689
Cody.Spiker@colorado.edu
Worries
1. That our petri-dishes may not properly fit in
SatElysium.
2. That our insulation system will not properly
separate the separate sections into their
individual environments that need to be
attained.
3. Attaining the proper structural integrity that
will allow us to successfully have two
separate levels in our SatElysium.