NASA SLI 2010 Mulberry Grove High School Flight Readiness Review Measurement of UVB Radiation Absorption by Cloth Material at Different Altitudes and Measurement of Vehicle Motor Tube/Case Temperatures During Launch Mulberry Grove SLI Team
NASA SLI 2010 Mulberry Grove High School Flight Readiness Review Measurement of UVB Radiation Absorption by Cloth Material at Different Altitudes and Measurement.
Dec 18, 2015
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NASA SLI 2010
Mulberry Grove High School
Flight Readiness ReviewMeasurement of UVB Radiation Absorption by
Cloth Material at Different Altitudes and Measurement of Vehicle Motor Tube/Case Temperatures
During Launch
Mulberry Grove SLI Team
NASA SLI 2010
Mulberry Grove High School
Outline
•Motor Choice•Rocket flight stability in static margin diagram•Thrust to weight motor selection in flight stimulation•Rail exit velocity•Parachute sizes and decent rates•Test plans and procedures•Full scale flight test•Dual deployment avionics test•Ejection charge amount test•Payload integration feasibility
NASA SLI 2010
Mulberry Grove High School
Motor Choice
• Engine selected
AeroTech
K700W
• Diameter- 54 mm
• Length- 56.8 cm
• Burn time- 3.5 sec
•Total impulse - 2261Ns
NASA SLI 2010
Mulberry Grove High School
Rocket Flight Stability in Static Margin Diagram
•Center of Gravity 68” from the nose cone
•Center of Pressure 86.8” from the nose cone
NASA SLI 2010
Mulberry Grove High School
Thrust to Weight Motor Selection in Flight Stimulation
Ratio of 6.8 to 1
NASA SLI 2010
Mulberry Grove High School
Rail Exit Velocity
68ft/s
NASA SLI 2010
Mulberry Grove High School
Parachute Sizes and Decent Rates
Drogue Parachute Size: 24”Descent Rate: 66 ft/s (simulation) 62 ft/s (test flight)
Main ParachuteSize: 9’Decent Rate: 20ft/s (simulation) 26 ft/sec (test flight)
NASA SLI 2010
Mulberry Grove High School
Test Plans and Procedures
Temperature Experiment
Static Testing
• Four sensors checked for consistency
• Battery longevity test
• Data recorded and download to computer
Actual Testing
• Actual test on first full-scale flight
NASA SLI 2010
Mulberry Grove High School
Temperature Test Data
NASA SLI 2010
Mulberry Grove High School
UVB Experiment
Static Testing
• Sensors tested and calibrated
• Sensor, CBL2, TI calculator combination tested
• Triggering to begin recording tested
• Data recording tested (limitation of 100 data points)
• Transfer of data tested
No dynamic testing performed.
NASA SLI 2010
Mulberry Grove High School
Small Scale Test Flight
Flight Test Report
NASA SLI 2010
Mulberry Grove High School
Full Scale Flight Test #1
February 28, 2010
Recovery Unsuccessful
Anomalies during lift-off
Flight Analysis
Launch Pad Camera
Hand-held Camera
NASA SLI 2010
Mulberry Grove High School
Full Scale Flight Test #2
March 18, 2010
Recovery Successful
Lift-off, flight, and recovery normal
Flight AnalysisLaunch Pad CameraHand-held Camera
NASA SLI 2010
Mulberry Grove High School
Dual Deployment Avionics Test
Altimeter Test Report
NASA SLI 2010
Mulberry Grove High School
Ejection Charge Amount Test
Black Powder Charge Test Report
2.7 g of black powder will be used. That amount was used in both full-scale flights.
NASA SLI 2010
Mulberry Grove High School
Payload Integration Feasibility
First full-scale test flight experienced anomalies at take-off.
$600 in damage was the result.
All UVB sensors were destroyed.
Payload bay had structural failure.
Payload was re-designed and sensors were placed in pvc pipe to protect them.
End caps to couplers reinforced.
NASA SLI 2010
Mulberry Grove High School
Payload Integration Feasibility
NASA SLI 2010
Mulberry Grove High School
Conclusion
Problems encountered during full-scale test flights have been mitigated.
Rocket and payload are now ready for a full flight with payload.
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