University of Florida PDR Presentation. Vehicle Design Diameter: 5.86 Length: 135 Static Stability...
-
Upload
william-mcnulty -
Category
Documents
-
view
219 -
download
0
Transcript of University of Florida PDR Presentation. Vehicle Design Diameter: 5.86 Length: 135 Static Stability...
![Page 1: University of Florida PDR Presentation. Vehicle Design Diameter: 5.86 Length: 135 Static Stability Margin: 1.4 Total Weight: 23.6 lbs.](https://reader036.fdocuments.net/reader036/viewer/2022081516/55141972550346dd488b54a1/html5/thumbnails/1.jpg)
University of Florida PDR Presentation
![Page 2: University of Florida PDR Presentation. Vehicle Design Diameter: 5.86 Length: 135 Static Stability Margin: 1.4 Total Weight: 23.6 lbs.](https://reader036.fdocuments.net/reader036/viewer/2022081516/55141972550346dd488b54a1/html5/thumbnails/2.jpg)
Vehicle Design
Diameter: 5.86”Length: 135”Static Stability Margin: 1.4Total Weight: 23.6 lbs
![Page 3: University of Florida PDR Presentation. Vehicle Design Diameter: 5.86 Length: 135 Static Stability Margin: 1.4 Total Weight: 23.6 lbs.](https://reader036.fdocuments.net/reader036/viewer/2022081516/55141972550346dd488b54a1/html5/thumbnails/3.jpg)
Payload Bay
Inside Rocket Separated From Rocket
![Page 4: University of Florida PDR Presentation. Vehicle Design Diameter: 5.86 Length: 135 Static Stability Margin: 1.4 Total Weight: 23.6 lbs.](https://reader036.fdocuments.net/reader036/viewer/2022081516/55141972550346dd488b54a1/html5/thumbnails/4.jpg)
Vehicle Materials
• Airframe: phenolic tube with fiberglass reinforcement
• Fins: 1/8” G-10 fiberglass• Bulkheads and Centering Rings: Birch Plywood• Shock Cord: 5/8” Tubular Nylon• Motor Retention: Aluminum sleeve
![Page 5: University of Florida PDR Presentation. Vehicle Design Diameter: 5.86 Length: 135 Static Stability Margin: 1.4 Total Weight: 23.6 lbs.](https://reader036.fdocuments.net/reader036/viewer/2022081516/55141972550346dd488b54a1/html5/thumbnails/5.jpg)
Vehicle Safety and Testing
• Structures verification– Fin load testing– Coupler joints– Motor retention testing
• Stability verification– RockSim– MATLAB
![Page 6: University of Florida PDR Presentation. Vehicle Design Diameter: 5.86 Length: 135 Static Stability Margin: 1.4 Total Weight: 23.6 lbs.](https://reader036.fdocuments.net/reader036/viewer/2022081516/55141972550346dd488b54a1/html5/thumbnails/6.jpg)
Recovery System Design
Rocket Drogue: 24” round Descent Rate: 80 ft/s
Rocket Main: 84” round Descent Rate: 21 ft/s
Payload Drogue: Heavy Duty StreamersDescent Rate: Undetermined
Payload Main: 60” roundDescent Rate: 19.5 ft/s
![Page 7: University of Florida PDR Presentation. Vehicle Design Diameter: 5.86 Length: 135 Static Stability Margin: 1.4 Total Weight: 23.6 lbs.](https://reader036.fdocuments.net/reader036/viewer/2022081516/55141972550346dd488b54a1/html5/thumbnails/7.jpg)
Recovery Safety and Testing
• Black powder charge ground testing• Parachute and streamer descent rate
verification• Payload bay separation testing• Payload landing testing• Flight computer & GPS testing in Avionics Bay
and Payload Bay
![Page 8: University of Florida PDR Presentation. Vehicle Design Diameter: 5.86 Length: 135 Static Stability Margin: 1.4 Total Weight: 23.6 lbs.](https://reader036.fdocuments.net/reader036/viewer/2022081516/55141972550346dd488b54a1/html5/thumbnails/8.jpg)
Motor Choice• Cesaroni K590– Average Thrust = 591 N; Max Thrust = 724 N– Total Impulse = 1336.5 Ns– T.W. Ratio = 5.635
![Page 9: University of Florida PDR Presentation. Vehicle Design Diameter: 5.86 Length: 135 Static Stability Margin: 1.4 Total Weight: 23.6 lbs.](https://reader036.fdocuments.net/reader036/viewer/2022081516/55141972550346dd488b54a1/html5/thumbnails/9.jpg)
Motor Safety and Testing
• Static Motor Testing– Tests our ability to assemble a K590 Motor– Tests the burn profile of the motor to check with
RockSim and online predictions
![Page 10: University of Florida PDR Presentation. Vehicle Design Diameter: 5.86 Length: 135 Static Stability Margin: 1.4 Total Weight: 23.6 lbs.](https://reader036.fdocuments.net/reader036/viewer/2022081516/55141972550346dd488b54a1/html5/thumbnails/10.jpg)
Flight Simulations
MATLAB vs. RockSim
![Page 11: University of Florida PDR Presentation. Vehicle Design Diameter: 5.86 Length: 135 Static Stability Margin: 1.4 Total Weight: 23.6 lbs.](https://reader036.fdocuments.net/reader036/viewer/2022081516/55141972550346dd488b54a1/html5/thumbnails/11.jpg)
Why use MATLAB?
• MATLAB can easily be used in optimization– RockSim may only be optimized through tedious
iteration. Time-consuming and inflexible• Design space visualization– 3D/4D plots
![Page 12: University of Florida PDR Presentation. Vehicle Design Diameter: 5.86 Length: 135 Static Stability Margin: 1.4 Total Weight: 23.6 lbs.](https://reader036.fdocuments.net/reader036/viewer/2022081516/55141972550346dd488b54a1/html5/thumbnails/12.jpg)
Preliminary Results
• MATLAB 1DOF is surprisingly accurate when RockSim simulates a wind speed of zero
![Page 13: University of Florida PDR Presentation. Vehicle Design Diameter: 5.86 Length: 135 Static Stability Margin: 1.4 Total Weight: 23.6 lbs.](https://reader036.fdocuments.net/reader036/viewer/2022081516/55141972550346dd488b54a1/html5/thumbnails/13.jpg)
Future Work
• MATLAB model will be extended to 3DOF• Compared with RockSim for various wind
speeds• RockSim and MATLAB models compared to
launch data. Best-fit determined
![Page 14: University of Florida PDR Presentation. Vehicle Design Diameter: 5.86 Length: 135 Static Stability Margin: 1.4 Total Weight: 23.6 lbs.](https://reader036.fdocuments.net/reader036/viewer/2022081516/55141972550346dd488b54a1/html5/thumbnails/14.jpg)
Payload Design
• Two 1/8" G-10 fiberglass cards mated with XBee Pro 900 transmitter in between– One card holds: R-DAS Tiny, PerfectFlite
altimeters, two batteries– Second card holds: GPS, transmitter card,
temperature and humidity sensor, JPEG trigger• Camera attached to inside of payload bay
looking out
![Page 15: University of Florida PDR Presentation. Vehicle Design Diameter: 5.86 Length: 135 Static Stability Margin: 1.4 Total Weight: 23.6 lbs.](https://reader036.fdocuments.net/reader036/viewer/2022081516/55141972550346dd488b54a1/html5/thumbnails/15.jpg)
Payload Design
![Page 16: University of Florida PDR Presentation. Vehicle Design Diameter: 5.86 Length: 135 Static Stability Margin: 1.4 Total Weight: 23.6 lbs.](https://reader036.fdocuments.net/reader036/viewer/2022081516/55141972550346dd488b54a1/html5/thumbnails/16.jpg)
Science Value of Payload Experiment• To test modern hydrologic theory– Comparing the theoretical total long and short
wave radiation to recorded data
• To establish an accurate measurement of the environmental lapse rate for temperature and pressure
![Page 17: University of Florida PDR Presentation. Vehicle Design Diameter: 5.86 Length: 135 Static Stability Margin: 1.4 Total Weight: 23.6 lbs.](https://reader036.fdocuments.net/reader036/viewer/2022081516/55141972550346dd488b54a1/html5/thumbnails/17.jpg)
Predictions from Hydrologic Theory
6:00 AM 7:59 AM 9:59 AM 11:59 AM 1:59 PM 3:59 PM 5:59 PM0.0
20.0
40.0
60.0
80.0
100.0
120.0
140.0
Long Wave Radiation in April 2010, Huntsville, Alabama
4/10/20104/11/20104/12/20104/13/20104/14/20104/15/20104/16/20104/17/2010Average
Time
Long
Wav
e Ra
diati
on (W
/m2)
6:00 AM 7:59 AM 9:59 AM 11:59 AM 1:59 PM 3:59 PM 5:59 PM0.0
100.0200.0300.0400.0500.0600.0700.0800.0
Short Wave Radiation in April 2010, Huntsville, Alabama
4/10/20104/11/20104/12/20104/13/20104/14/20104/15/20104/16/20104/17/2010Average
Time
Shor
t Wav
e Ra
diati
on (W
/m2)
![Page 18: University of Florida PDR Presentation. Vehicle Design Diameter: 5.86 Length: 135 Static Stability Margin: 1.4 Total Weight: 23.6 lbs.](https://reader036.fdocuments.net/reader036/viewer/2022081516/55141972550346dd488b54a1/html5/thumbnails/18.jpg)
Lapse Rates
• Temperature lapse rate estimated to be somewhere between 6°C/km and 10°C/km• Pressure lapse rate found from Perfect Gas
Law
Source: Figure 3.2.2 from Applied Hydrology by Chow, Ven T., David R. Maidment, and Larry W. Mays. International ed. New York: McGraw-Hill, 20051988. Print.
![Page 19: University of Florida PDR Presentation. Vehicle Design Diameter: 5.86 Length: 135 Static Stability Margin: 1.4 Total Weight: 23.6 lbs.](https://reader036.fdocuments.net/reader036/viewer/2022081516/55141972550346dd488b54a1/html5/thumbnails/19.jpg)
Payload Testing
• Solar cell has range of 430 to 1100 nm. Test the voltage-to-W/m2-conversion-constant
• UV sensor voltage-to-W/m2-conversion-constant
• Sensor-to-RDAS configuration• Note: Will need IR sensor to measure “long
wave” radiation ( > 4 μm)