team solkraft
DESCRIPTION
Team Solkraft. Thomas Buck, Kyle Garner, Alexandra Jung, Quinn Mcgehan , Mark Sakaguchi , and Scott Taylor. Critical Design Review 10/7/2010. Mission Overview. Objective To determine the effect of near space conditions on solar cell output. Temperature, light intensity, and altitude. - PowerPoint PPT PresentationTRANSCRIPT
Thomas Buck, Kyle Garner, Alexandra Jung, Quinn Mcgehan, Mark Sakaguchi,
and Scott Taylor
Team Solkraft
Critical Design Review 10/7/2010
Mission Overview• Objective
– To determine the effect of near space conditions on solar cell output.• Temperature, light intensity, and altitude.
– Expect to prove that there is a relationship between the variables above and the output of two different types of cells.
• Hypothesis– The monocrystalline cells will outperform the polycrystalline cells,
while both cells will perform better in near space than on the ground.
Mission Overview • Widespread development of solar cells for consumer use is
relatively new– 2008- World record set in efficiency (40.8%)
• Very expensive cell, not consumer friendly– Two main types of consumer oriented cells
• Monocrystalline/Polycrystalline • Why?
– Want to know which type of cell is more efficient for consumer use
– Want to know which environments are best for maximum energy output
Mission Requirements (Level 0)
Requirement Number
Requirement Where it comes from
M 0.1 The solar panels on the BalloonSat shall be exposed to near-space conditions
Mission Objective
M 0.2 Team Solkraft shall measure the internal and external temperature with varying altitude
Mission Objective
M 0.3 Team Solkraft shall measure the light intensity with varying altitude
Mission Objective
M 0.4 Team Solkraft shall test for variations in solar cell output under varying climate conditions
Mission Objective
M 0.5 Team Solkraft shall meet the requirements for the request for proposal
Mission Requirements (Level 1)
Requirement Number
Requirement Where it comes from
M 1.1 The solar panels shall be attached to the angled sides of the BalloonSat
M 0.1 M 0.4
M 1.2 Team Solkraft shall be able to record the altitude of the BalloonSat using data from EOSS GPS
M 0.2, M 0.3
M 1.3 Team Solkraft shall be able to record and save data during the flight
M 0.2, M 0.3, M 0.4
M 1.4 Team Solkraft shall maintain a minimum temperature of -10 degrees Celsius.
M 0.3, M 0.3, M 0.5
M 1.5 Team Solkraft shall program the Arduino microcontroller to record solar cell output data to a micro SD card
M 0.2, M 0.3, M 0.4
M 1.6 Team Solkraft shall take in-flight pictures using a Canon A5701S camera and save them to the camera’s 2 GB memory card.
M 0.5
Mission Design: How?• Experiment will incorporate three main categories
– Photodiodes: Detect light intensity to determine the “amount” of sunlight hitting the panels
– Thermistors: On each face to detect temperatures effect on output.
– Solar cells: Two different types to determine which one is most efficient
• All three components will be flowed into multiplexer– Multiplexer will deliver multiple logs per minute– Arduino will log results to MicroSD card to be uploaded
into Matlab/Excel
Mission Design
ArdunioHOBO
Mono Cells
Poly Cells
Photodiodes
Thermistors
Mission Design 3 9V
Batteries Switch Heater
Batteries Switch Camera 2 GB Memory Card
Multi-plexer
Thermisters
Photodiodes Polycrystalline Solar Cells
Monocrystalline Solar Cells
Batteries Switch Arduino 328
2GB Micro SD Card
HOBOPower
Switch
Provided Hardware
Sensors
Solar Cells
Test Plan• Structure Tests
– Kick Test– Drop Test– Whip Test
• Freeze Test to make sure thermal systems work• Data Test to make sure Arduino and HOBO are recording properly• Camera/Imaging Tests• Ground Control Tests for:
– Solar Panels– Photodiodes– Thermistors
Expected Results
• Monocrystalline will outperform polycrystalline solar cells
• Solar cells will produce more power in near space– Higher light intensity
• Less interference with atmosphere– Solar cells less effective at higher temperatures
• Higher Carnot efficiency of the cell
Organization
Scott Taylor Team Lead
Structure Lead Science Assist
Kyle Garner Power Lead
Internal Testing Data Analysis
Thomas Buck Science Lead
Science Testing Structure Assist
Quinn Mcgehan Electrical Lead Internal Testing Programming
Assist
Alexandra Jung Budget//Plan Lead
Structure Testing Electrical
Assist
Mark Sakaguchi Programming
Lead Science Testing Data Analysis
Biggest Worries• The Biggest Worries Of Team Solkraft Are…
– Camera failure incl. camera fogging up– Hardware failure i.e. solar panels breaking– Sufficient Programming and debugging– Lack Of Sleep