hang seven launch readiness review
DESCRIPTION
Hang Seven Launch Readiness Review. Lucas Migliorini, Becca Lidvall, Paul Smith Chase Goodman, Ethan Hollenbach, Nikhil Desai, Abby Caballero, Sierra Williams November 26, 2012. Mission Overview. •Build three geiger counters •Measure Gamma Radiation as Altitude Increases - PowerPoint PPT PresentationTRANSCRIPT
Hang SevenLaunch Readiness Review
Lucas Migliorini, Becca Lidvall, Paul Smith Chase Goodman, Ethan Hollenbach, Nikhil
Desai, Abby Caballero, Sierra Williams
November 26, 2012
Mission Overview
•Build three geiger counters•Measure Gamma Radiation as Altitude
Increases•Test the effectiveness of aluminum and carbon
fiber on reducing radiation levels
Design Overview
• Hexagonal Designo Centripetal Acceleration
• Foam Coreo Thermal Insulation
• Geiger Tubes o One will be covered with Carbon Fiber Tubingo One will be covered with Aluminum Tubingo One will not be covered, as a control
• Arduinoo Will control all sensors and Camera
External Diagram
Camera On/Off-Arduino
Camera on/off
Internal Diagram
Camera
Arduino with Sensors
Geiger Counters(3)
Batteries
Heater
Test Results Part 1
Geiger Counters (Oscilloscope Reading):
Test Results Part 2Other Internal:
KeyOrange -TemperatureGreen - HumidityBlue - PressureRed/Purple/Gray -
Accelerometer
KeyOrange=Accel XBlue=Accel YGreen=Accel Z
Sensor Test Cont.
Internal: Dry Ice Test
o Dry ice test results were inconclusiveo We plan to look into the problem and do more testing to ensure that the internal components can withstand the temperatures they will be exposed to.
Test Results Part 3
Structural: Drop Test
o Two drop tests were performedo A few dents around the corners after the first test were foundo A tear occurred after the second drop test on one of
the sidewallso The structure supported the maximum amount of
weight allowed
Structural: Kick Test
o One kick test was performedo Minimal damage was doneo The structure supported the maximum amount of weight allowed
Structural: Whip Test
o Two whip tests performedo No damage was foundo The structure supported the maximum amount of weight allowed
Structural: Test Conclusion
o The three different structural tests performed show that our structure will withstand the ascent and descent of the flight with minimal damage
Ground Ozone 30 km
Control 1 250 400 600
Aluminum 1 75 100 200
Carbon Fiber 1 150 200 300
Prediction
Biggest Worries
Hardware/Software-Geiger Counter Failure-Faulty Programing -Sensor Failure-Battery Life
Data-Insufficient data-Inaccurate data-Inconsistent data
Level Number Requirements Fulfillment
0 1 Payload must ascend to an altitude of 30 kilometers via balloon Have not flown yet
0 2 Payload must store and collect data from our sensors With the exception of external temperature all
sensors have been tested and will store and
collect data
0 3 The payload mass must not exceed 1.125kg Our estimated total weight is around 1030g
0 4 The payload must be ready for launch by 1 December, 2012 It will be
0 5 The team and project must obey all safety precautions Yes, we have abided by all safety requirements
Requirements Checklist
Level Number Requirements Fulfillment
1 1 The payload must be able to hold all electronics and sensors All of our equipment fits within the satellite
1 2 The payload must contain a heater We made a heater which has been tested and
confirmed to work
1 3 The payload must contain a power source Success, we are using seven 9v batteries
1 4 The payload must be constructed solely of foam core We successfully constructed a hexagonal structure using foam core
1 5 The payload must contain three working geiger counters All three of our Geiger counting are functioning
correctly but the tubes are weak for low radiation
levels
1 6 Geiger counters will be shielded with different materials We have the aluminum tubing shielding one
counter and the carbon fiber has not yet been
added
1 7 An American flag will be attached to the BalloonSat We have our American Flag that is to be attached
to the BalloonSat
Level Number Requirements Fulfillment
2 1 The internal temperature of the payload must not drop below -10° celsius Our insulation is thick enough for our internal
temperature to not drop below -10° Celsius
2 2 The Geiger counters will be connected to the Arduino microcontroller The Geiger counters are connected to the Arduinos
so we can store data
2 3 One Geiger counter will be used as a control for radiation measurement One of our Geiger counters are not going to be covered by a material
2 4 The structure will be sturdy enough to survive the ascent and descent The structure is sturdy enough to survive the ascent and descent as
proven by testing
2 5 The Arduino microcontroller will be programmed to collect information Both of our Arduinos are programmed to collect the data from the sensors and
Geiger counters
2 6 Aluminum and carbon fiber tubes will each be used to shield one Geiger counter from radiation
We have the materials and Geiger counters in order
to shield and test the effectiveness of each
material
Level Number Requirements Fulfillment
3 1 The measurements from the Geiger counters will be plotted as to look for trends
After our mission, we will plot our data to observe trends
3 2 The structure will be a hexagonal shape for strength and the generation of centripetal force
Our structure is a hexagonal shape
3 3 Homemade Geiger counters will be calibrated to an industry standard Geiger counter
Our Geiger tubes do not detect low levels of radiation well so we calibrated them to the best of our ability