Download - NASA SLI 2010
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NASA SLI 2010
Mulberry Grove High School
Critical Design 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
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NASA SLI 2010
Mulberry Grove High School
Outline
• Rocket Construction and Design
• Payload
• Recovery
• Safety
• Outreach
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NASA SLI 2010
Mulberry Grove High School
Rocket Dimensions, Material
Diameter: 4 inches
Length: 109.5 inches
Gross Liftoff Weight: 23 lbs
Material: G10 FiberglassMad Dog Dual Deployment Kit
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NASA SLI 2010
Mulberry Grove High School
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NASA SLI 2010
Mulberry Grove High School
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NASA SLI 2010
Mulberry Grove High School
Nose Cone
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NASA SLI 2010
Mulberry Grove High School
Coupler in Nose Cone
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NASA SLI 2010
Mulberry Grove High School
Epoxy of Nuts on Airframe
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NASA SLI 2010
Mulberry Grove High School
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NASA SLI 2010
Mulberry Grove High School
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NASA SLI 2010
Mulberry Grove High School
Avionics Bay
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NASA SLI 2010
Mulberry Grove High School
Endcap
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NASA SLI 2010
Mulberry Grove High School
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NASA SLI 2010
Mulberry Grove High School
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NASA SLI 2010
Mulberry Grove High School
Fin Can
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NASA SLI 2010
Mulberry Grove High School
Completed Booster Section
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NASA SLI 2010
Mulberry Grove High School
Fin Joints
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NASA SLI 2010
Mulberry Grove High School
Aero Pack Retainer
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NASA SLI 2010
Mulberry Grove High School
• Center of Pressure (from nose) 88 inches• Center of Gravity (from nose) 68.5 inches• Stability Margin 4.8• Thrust-to-Weight Ratio 6.8 to 1• Rail Exit Velocity 68 ft/sec
Stability Analysis
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NASA SLI 2010
Mulberry Grove High School
Motor Selection• Engine selected
AeroTech
K700W
• Diameter- 54 mm
• Length- 56.8 cm
• Burn time- 3.5 sec
•Total impulse - 2261Ns
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NASA SLI 2010
Mulberry Grove High School
Scale Flight
When: December 29, 2009
Altitude: 2157 feet
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NASA SLI 2010
Mulberry Grove High School
Scale Flight Graph
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NASA SLI 2010
Mulberry Grove High School
Scale Flight Data
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NASA SLI 2010
Mulberry Grove High School
PAYLOAD
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NASA SLI 2010
Mulberry Grove High School
Two Experiments
•Temperature of Motor Tube and Motor Casing
• Measurement of Absorption of UVB Radiation of Cloth
Payload Design
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NASA SLI 2010
Mulberry Grove High School
Payload
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NASA SLI 2010
Mulberry Grove High School
Payload
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NASA SLI 2010
Mulberry Grove High School
Temperature Experiment Purpose
To measure temperature along the motor tube and motor casing during launch. Temperature data will help determine which epoxy should be used.
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NASA SLI 2010
Mulberry Grove High School
Temperature Hypothesis
Our hypothesis is that the temperature along the motor casing and motor tube will be around 200 degrees F.
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NASA SLI 2010
Mulberry Grove High School
• 4 SA1- RTD heat sensors
• Placement
• Sensor- 3 reading/ 1 second
• Data logger -1 reading/ 3 seconds
Temperature Experiment Equipment
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NASA SLI 2010
Mulberry Grove High School
Thermocouple Sensors
Four thermocouple sensors will be embedded into the epoxy glue joint along the fin-to-motor tube connection; one will be embedded as close to the JB Weld adhesive on the retainer.
Temperature readings will be recorded during the flight to measure the heating on the motor tube epoxy.
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NASA SLI 2010
Mulberry Grove High School
Sensor Location
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NASA SLI 2010
Mulberry Grove High School
Non-reversible 3 dot labels
• Labels will be placed between the rocket casing and motor tube.• Temperature sensitive material will turn the dots a different color when the temperature is reached.• Testing was started during a November flight with a K700W motor to find the temperature range of sensors that we need.
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NASA SLI 2010
Mulberry Grove High School
UVB Experiment Purpose
To measure the absorption of UVB radiation by different cloth material at different altitudes.
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NASA SLI 2010
Mulberry Grove High School
Hypothesis of UVB Experiment
Our hypothesis is that the change in UV radiation will increase with altitude at a rate of 3-4 percent per 1000 feet. Also, the cloth will block the UV radiation with the white cotton blocking more than the denim because the white material will tend to reflect some of the radiation.
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NASA SLI 2010
Mulberry Grove High School
Texas Instrument CBL2Three UVB sensorsCloth material
Measurement of Absorption of UVB Radiation of Cloth Equipment
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NASA SLI 2010
Mulberry Grove High School
UVB Experiment
Three sensors will be used; one control, the other two to take readings through the material.
Sensors will point straight upward at the end of the payload bay and will be exposed to the atmosphere when the drogue chute is deployed.
Data will be recorded and analyzed to measure the amount of UVB radiation that is absorbed by the cloth.
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NASA SLI 2010
Mulberry Grove High School
Plan for Payload Safety, Verification, and Testing
The sensors will be tested in the laboratory and outside to plot the readings of the two sensors compared to the control.
The experiments will be flown on a test flight in February to make sure the experiment works properly.
Loggers will be tested to determine life of batteries and length of time it will record data.
Software will confirm data can be recovered from experiment.
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NASA SLI 2010
Mulberry Grove High School
• Dual Deployment
• Dual system of altimeters with black powder charges
• Electronic tracker
Recovery System Design
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NASA SLI 2010
Mulberry Grove High School
PrimaryOzark Aerospace Arts IIDrogue setting: apogeeMain setting: 600 feet
SecondaryPerfectFlite MAWDDrogue setting: apogee plus 1 secondMain setting: 500 feet
Altimeters
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NASA SLI 2010
Mulberry Grove High School
Parachutes
Drogue Chute 24 inch SkyAngleVelocity of Descent: 0 ft/sec
Main Chute6 feet SkyAngleVelocity of Descent: 33 ft/sec
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NASA SLI 2010
Mulberry Grove High School
Tracking
• The receiver is a 10-channel unit manufactured by F
& L Electronics with analog tuning to within 10 hertz.
• HAM radio license is not required.
• Tested on December 29, 2009 scale launch.
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NASA SLI 2010
Mulberry Grove High School
Recovery Verification and Testing
Testing
• Altimeter bell jar test• Black powder charge test on vehicle• Shear pin test• Electric matches testing
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NASA SLI 2010
Mulberry Grove High School
Black Powder Test
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NASA SLI 2010
Mulberry Grove High School
Safety
• We followed all MSDS safety regulations and standard shop regulations.
• Proper safety equipment was used, including:
Safety glasses
Rubber gloves
Dust masks
Proper ventilation
Ear plugs
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NASA SLI 2010
Mulberry Grove High School
SafetyKey materials used that may be dangerous:
• Epoxy (5:1 by weight resin to hardener ratio)
• Epoxy (1:1 by volume resin to hardener ratio)
• Fiberglass
• Rubbing Alcohol
• Super glue
• JB Weld
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NASA SLI 2010
Mulberry Grove High School
Outreach Goals
Main points:
• Reach out to younger students about rocketry
• Teach them about the safety involved
• Introduce them into a new hobby
• Develop their interest in science and math
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NASA SLI 2010
Mulberry Grove High School
1st Grade Project (about 40 students)Read book Astronaut HandbookDrawMake and shoot bottle rockets
6th Grade Project (about 30 students)Read the book The Rocket BoysDiscussion of bookWatch the movie October SkyCompare and contrast the book and movie
4th-6th Grade Project at Beckemeyer ElementaryHelp with construction of rockets for about 100 studentsSponsor a rocket launch on the weekend to fly their rockets
Educational Outreach Program
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NASA SLI 2010
Mulberry Grove High School
A view into the Outreach Program
1st Grade Project (about 40 students)Read book Astronaut HandbookDrawMake and shoot alka-seltzer rockets
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NASA SLI 2010
Mulberry Grove High School
Outreach Program Cont.
• 6th Grade Project (about 30 students)– Read the book The Rocket Boys– Discussion of book– Watch the movie October Sky– Compare and contrast the book and movie
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NASA SLI 2010
Mulberry Grove High School
Flip Book of Project(example)
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NASA SLI 2010
Mulberry Grove High School
Outreach Program Cont.
• 4th-6th Grade Project at Beckemeyer Elementary– Help with construction of
rockets for about 100 students
– Sponsor a rocket launch on the weekend to fly their rockets
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NASA SLI 2010
Mulberry Grove High School
First Grade Current Progress
Sixth GradeCurrent Progress
Beckemeyer ElementaryCurrent Progress
Outreach Program Progress
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NASA SLI 2010
Mulberry Grove High School
Budget and Fund Raisers
The budget is manageable and realistic for this project.Fundraisers include:
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NASA SLI 2010
Mulberry Grove High School
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