Team SST
Conceptual Design Review
Eric James, Vlad Soukhovei,
John Marcantonio, Kara
Bongiovanni, Sean Rivera
09/16/10
Mission Overview
Mission Statement:
The BallonSat DJDoppler shall ascend to an altitude of approximately 30km while collecting and
storing telemetry in the forms of air density (kg/m3) and sound waves. We will use this data in
order to discern a correlation between the change in the characteristics of sound waves (i.e.
frequency and amplitude) and the change in air density. In finding this correlation, we will see how
these characteristics of sound waves change with air density.
– Objective
find a correlation between air density and sound waves
– What we expect to discover:
an increase in frequency
a decrease in volume as air density decreases.
– Why we are doing this mission:
to gain data on the behavior of sound waves at high altitude
gain understanding of how radios in high altitude aircraft could be improved
Design
Power Supply
(Two AA Batteries)
Switch 1
Power Supply
(Three 9V batteries)
Switch 2
Power Supply
Power Supply
Power Supply
(Two AAA batteries)
Camera
Heater
Switch 3
Pocket AVR
Programmer
Weather Station
Switch 4
Switch 5
Camera Memory
Speaker
Digital Audio Recorder
Management
Team Member
Titles
Specific Tasks
Sean
Head Engineer/Project Leader
Programming Engineer
-Makes executive team decisions
-systems programming
Eric
Testing Engineer
Asistant Programming Engineer
-Subsystem testing
-software modification
-Programming
Kara
Hardware Engineer
Asistant Management Engineer
-Order/acquire all Hardware
-Budget management
-Team Coordination
John
Management Engineer
Assistant Manufacturing Engineer
Dan
Manufacturing Engineer
Assistant Testing Engineer
Vlad
Design Engineer
Assistant Project Leader
-Time management
-Team Coordination (meetings, emails)
-Subsystem installation
-Build satellite structures
-Subsystem installation
-Subsystem testing
-Satellite design
-Satellite design modifications
-Assist project leader in important decisions
Management
Week
Week of 9/13
Mtng dates
9/15, 9/17
Deadlines/Tasks/Goals
Week of 9/20
9/22, 9/24
Internal design review at team meeting on 9/22
Design complete by 9/24
Prepare DD Rev A/B and CDR slides.
Week of 9/27
9/29,10/1
Finish DD Rev and CDR slides.
Complete prototype structure.
Perform Cold test. (prototype structure test)
Week of 10/4
10/6,10/8
10/5-DD Rev A/B and CDR slides turned in.
Acquire all hardware
Prototype designs for subsystems (circuit,
thermal, power, data collection)
Week of 10/11
10/13, 10/15
Week of 10/18
10/20, 10/22
Complete prototype testing (circuit, thermal,
power, data)
Begin final design testing.
Complete final design testing by 10/24.
Design Document Review C
Week of 10/25
10/27, 10/29
Week of 11/1
11/3, 11/5
Complete and finalize the proposal for the
project due 9/16.
10/26 Bring all Hardware.
10/28 Mission Simulation Test
Complete Launch Readiness Review.
11/02 LLR DUE.
11/05 Weigh in and TURN IN Satellite by
2:00pm DLC 270A (1)
11/06 LAUNCH!
Budget and Weights
Component
Cost
Weight
Foam Core
Provided
?
HOBO Data Logger
Provided
25.0 grams
Batteries
*
?
Heater
Provided
100.0 grams
Switches
Provided
20.0 grams
Digital Audio Recorder
$55.00 (after shipping)
68 grams w/ batteries
Portable Weather Station
$109.60 (after shipping)
158.76 grams w/batteries
Speaker
$6.53 (after shipping)
4.5 grams
Canon Digital Camera
Provided
220.0 grams
Brunton ADC-IR
$34.95 (after shipping)
N/A
Pocket AVR Programmer
$19.36 (after shipping)
< 5grams
Total
$206.08 *
596.26 grams **
* Leaves $95.92 for batteries and spare parts.
**Leaves 203.74 grams for foam core and batteries.
Biggest Worries
• Losing power
• Components freezing
• We will get too high that the sound
recorder won’t be able to pick up any
sound