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STUDENT LAUNCH INITIATIVE2010 – 2011
AIAA OC SECTION
CDR PRESENTATION
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Student Launch Initiative
AIAA OC Section
Agenda Introduction of team members (representing 5 high schools in
Orange County California) Finalized Vehicle – Black Brant
• Motor• Parachute and Descent Rates• Dual Deployment
Dual Deployment Tests
• Payload Test Plans and Procedures Scale Model – 2.6 inch Black Brant
• Second Flight• Flight Analysis
Testing• Black Powder• Battery Life • GPS Range
Educational Engagement Questions 2
Student Launch Initiative
AIAA OC Section
Finalized Vehicle – Black Brant
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Student Launch Initiative
AIAA OC Section
Full scale model
Diameter 4 inches
Length 84.5 inches
Liftoff Weight 17.75 pounds
Descent Weight 13.85 pounds
Center of Pressure 62.0220 inches
Center of Gravity 52.4814 inches
Launch Rail Length 6 feet
Motor Retention Method Aero pack Qwik Change Motor Retainer
Thrust-to-Weight Ratio 8.28:1
Finalized Vehicle – Black Brant
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Student Launch Initiative
AIAA OC Section
Full scale model
Rail Size One Inch
Size of shock cord 5/8 inch
Length of shock cord 15 feet in each section
Material of shock cord Tubular Nylon
Drogue parachute 24 inches
Main parachute 84 inches
Black powder for drogue 1.54 grams
Black powder for main 1.43 grams
Cesaroni K635 Redline
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Student Launch Initiative
AIAA OC Section
Pro54 1994K635-
17AMotor Data
Brandname Pro54 1994K635-17A Manufacturer Cesaroni
Technology
Man. Designation 1994K635-17A CAR
Designation
1994-K635-17A
Test Date 7/6/2003
Single-Use/Reload/Hybrid Reloadable Motor
Dimensions mm
54.00 x 488.00
mm (2.13 x 19.21
in)
Loaded Weight 1989.90 g (69.65 oz) Total Impulse 1749.50 Ns
(393.64 lb.s)
Propellant Weight 1281.00 g (44.84 oz) Maximum
Thrust
728.70 N (163.96
lb)
Burnout Weight 658.40 g (23.04 oz) Avg Thrust 656.00 N (147.60
lb)
Delays Tested 17 - 7 secs ISP 139.30 s
Samples per second 1000 Burntime 2.66 s
Notes Red Lightning™
Motor Selection
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Student Launch Initiative
AIAA OC Section
Motor Properties
Manufacturer Cesaroni
Motor Type K635 Redline
Max, Average Thrust(Newtons)
656
Total Impulse (Newton – Seconds)
1749.5
Mass of Motor Before and After Burn(Pounds)
4.38/1.45
Parachute and Descent Rates
Rocket mass = 221.65 oz Drogue chute diameter = 24 in. Main chute diameter = 84 in. Calculated projected velocity for each chute with
online calculator and by hand v2 = 2FD / (ρ)(CD)(A)
• CD = 1.00
• FD = mg = (6.285 kg)(9.8 m/s2) Hand: vdrogue = 60.99 ft/s Online: vdrogue = 68.57 ft/s Hand: vmain = 17.43 ft/s Online: vmain = 19.59 ft/s
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Student Launch Initiative
AIAA OC Section
Dual Deployment
Electronics: MAWD Perfect Flight, HCX G-Wiz Partners The electronics will “back” one another up incase one
pyro (either drogue or main) does not fire. Drogue Parachute will be deployed at apogee Main Parachute will be deployed at 900ft The electronics have been tested four tests have been
done:• Christmas tree light test • Vacuum Chamber test• First flight in the scale rocket (MAWD Only)• Second Flight in scale model (MAWD Only)
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Student Launch Initiative
AIAA OC Section
Dual Deployment Tests
Christmas Tree Light:
Vacuum Chamber:
First Launch
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Student Launch Initiative
AIAA OC Section
Electronic SuccessfulMAWD Perfect Flight YesHCX G-Wiz Partners Yes
Electronic SuccessfulMAWD Perfect Flight yesMAWD Perfect Flight yesHCX G-Wiz Partners NoHCX G-Wiz Partners YesHCX G-Wiz Partners Yes
Flight Height Successful
First Flight 1938 Yes
Second Flight 1740 Yes
Payload
G-Wiz Partners HCX flight computer - measures acceleration of the rocket
Toshiba hard drive – test subject; we will run a Linux script on the hard drive over and over again; the time the hard drive takes to run the script each time is measured
Simple net computer/Linux computer – the mini computer that will execute the Linux script on the hard drive; it will be initialized by a PC; the flight data will be recorded on a flash drive inserted into this computer
Power converter – Keeps a steady flow of power to the payload components
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Student Launch Initiative
AIAA OC Section
Test Plans and Procedures
February 12 launch Scale model Test dual Deployment
Ejection charges Full Scale modelTest with modified ejection charge amount
Launch Scale Model March 5 and/ or March 12
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Student Launch Initiative
AIAA OC Section
Scale Model – Black Brant
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Student Launch Initiative
AIAA OC Section
Full scale model
Diameter 2.6 inches
Length 61.84 inches
Motor Ceseroni H152
Liftoff Weight 5.1 pounds
Descent Weight 4.56 pounds
Center of Pressure 51.18 inches
Center of Gravity 34.45 inches
Launch Rail Size 1 inch
Motor Retention Method Aero pack Qwik Change Motor Retention
Thrust-to-Weight Ratio 6.7:1
Scale Model – Black Brant
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Student Launch Initiative
AIAA OC Section
Full scale model
Rail Size One inch
Size of shock cord 5/8 (sustainer) ½ (top section)
Length of shock cord 15 feet (sustainer) 10 feet (top section)
Drogue parachute 15 inch
Main parachute 30 inch
Black powder for drogue 1.01
Black powder for main 1.14
Scale Model Second Flight
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Student Launch Initiative
AIAA OC Section
Flight Analysis
After watching the flight we knew there was some faults:
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Student Launch Initiative
AIAA OC Section
Fault Why it was made How we are going to fix it
Complex wiring The team was trying to fit everything in the avionics bay, and didn’t have much room
Make Longer wires to be able to assemble sleds outside of the avionics bay and slide in
Instability when reaching apogee
Team rushed to get one more flight in
Ultalize time more wisely, and not look over look any ‘small’ detail
Drag/impulse Separation A mentor advised not to use shear pins for main ‘chute
Follow the design and don’t let others misguide you
Testing
All the testing we have done is to help ensure that our rocket is safe
Testing that has been done includes:• Black Powder• Battery Life• GPS Range• Scale Model Launch
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Student Launch Initiative
AIAA OC Section
Testing – Black Powder
The table below shows the testing our team has done with black powder charges. How we did the testing was by assembling the rocket as we normally would but through the pressure hole
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Student Launch Initiative
AIAA OC Section
Located Amount Successful
Scale – Main 1.01 yes
Scale – Drogue 1.14 grams yes
Full – Main Rocket not completed
Full – Drogue Rocket not completed
Testing – Battery Life
Electronics Life time (hours) Successful
HCX G-Wiz Partners 2.5 Yes
MAWD Perfect Flight 36 (and still going) Yes
Big Red Bee Beeline GPS
18.7 (and still going) Yes
Payload 3.74 (and still going) Yes
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Student Launch Initiative
AIAA OC Section
Testing – GPS Range
Our team first let the electronics connect to satellites, once it had done that then we started to walk away from the transceiver (big red bee beeline) and saw how far it would transmit while being in the rocket.
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Student Launch Initiative
AIAA OC Section
Transceiver Location
Range Successful
On the ground 3.05 miles Yes
Educational Outreach
Cloverdale 4-H club Girl Scouts workshop Presentations to Sunny Hills High School Science classes to
get involved Help out ABC Unified School District with their annual
Science Olympics Articles published/ will be published in the Orange County
Register, The Foothill Sentry, and the Sunny Hills High School Accolade
We have contacted the Discovery Center to participate in their Youth Booth
In the process of contacting corporations regarding fundraising
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Student Launch Initiative
AIAA OC Section
Questions
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Student Launch Initiative
AIAA OC Section