NMT Space Launch Spring 2013
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Transcript of NMT Space Launch Spring 2013
NMT Space Launch Spring 2013Joseph MacGillivray (Lead), Levi Magnuson, Lloyd Puckett, Karen Quezada, Sam Chesebrough, Jaclene Gutierrez, and Cameron Lucas
Background and Objective Purpose
Study the little-known effects of the atmosphere and space on piezoelectric sensors using structural health monitoring (SHM) techniques.
ImportanceSHM could significantly reduce cost of satellite launches by reducing pre-flight testing time and localized damage detection of loose bolts and cracks.
SolutionThe team will launch SHM experiments on High-Altitude Balloon and Sub-Orbital Rocket. This proof-of-concept flight will pave the way for SHM integration on commercial and defense satellites.
Data will be collected before, during, and after flights to ascertain the structural state of several key points on the experiment.
WirelessCollect Wireless
Four wireless strain gauges Sensors read/report strain, temperature, and
pressure changes during launch
Future Work
March 2013 Professional Journal Paper Review Final Data Analysis - Balloon
April 2013 Sub-Orbital Rocket Launch Preliminary Data Analysis - Rocket
Conclusion Previous Work – Design & Prototype Complete Objective – Codify Space Environment Effects Product Specifications – Survive & Collect Data Program Plan – Suborbital Launch in Spring Results – Structure, Wireless, and SHM
Results – Balloon Launch
ImpedanceCollect Sensor Data
Corresponds to sensor’s resistance to motion Data plots Impedance (Ohms) vs. Frequency (kHz)
• Acknowledgements: Dr. Zagrai, Chris White, Ben Cooper, Jon Schlavin
Figure 2: Previous Experiment
Wave PropagationCollect Signal Data
Corresponds to wave propagation of signal (change) Data plots Voltage (V) vs. Time (µsec)
Descent (7 m/s, 0.4 Hr)
Ascent(5 m/s, 1 Hr)
3-4 Hours
Release
Balloon Release
Chute Deploy
Landing
•Troposhpere
•0 to 11 km•15oC to -55oC
•Tropopause•11 to 20 km•-55oC
•20 km & up•-55oC to -46oC•Stratospher
e
Figure 1: Balloon Launch Profile (Left), Rocket Launch Profile (Right)
0 10 20 30 40 50 60 70 80 90 1001400
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Time, usec
Am
plitu
de, V
Timetrace of Sensor 102mm from center: 500kHz signal
ActuatorS2
Figures 4: Sensor Plate, Metis HubTouch, Sensor Data
Background
Precursor Experiment launched Spring 2011
Collected data demonstrated that quantified space
environment effects SHM data.
Further analysis was required, spawning this year’s
experiment.
Previous Work
Wireless Wireless proof-of-concept success
Impedance Microcontroller issue prevented useful data WID3 unfit for continued use
Wave Propagation Successful proof-of-concept; confirms known
physics
Figure 5 shows Temperature dependence for pulse-speed propagation. These shifts will need to be accounted for in the suborbital data analysis.
Figures 5: Life-Cycle Wave Propagation Data
Figure 3: Prototype Canister Design
Wireless Hub Plate
Impedance Sensors
Design
Wave Sensor PlateWave Hub Plate
Impedance Hub Plate