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Cansat Competition 2010: Team: CATSAT TEAM (Students) Country: Spain

Cansat Competition 2010: Team: CATSAT TEAM (Students) Country: Spain University: Universidad Politécnica de Madrid Escuela Técnica Superior Ingenieros Aeronáuticos Category: Experimental-Cansat Size: Cansat Size

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Cansat Competition 2010: Team: CATSAT TEAM (Students) Country: Spain

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  1. Cansat Competition 2010: Team: CATSAT TEAM (Students) Country: Spain University: Universidad Politécnica de Madrid Escuela Técnica Superior Ingenieros Aeronáuticos Category: Experimental-Cansat Size: Cansat Size Team leader: Miguel Ángel de Frutos Carro Team members: Almudena Buelta Management and Administration Alejandro Bujarrabal Data Analysis and Structure Carlos Freire Structure and Treasury Juan Fernández Parachute system Miguel Ángel de Frutos Electronics and Programming

  2. Cansat Mission: • Detection, measurement and registration of different physics variables. • Verification of the existence of useful microgravity. • Design a modular electronic device which can be used in futures amateur rockets • Practical realization of a recovery system which allow us a controlled opening.

  3. Flight Data: • Outside temperature. • Barometer. • Barometer altimetry. • Acceleration in 3 axis. • Speed on 3 axiss. • Space travelled in 3 axis. • Microgravity. • GPS coordinates. • GPS height. • GPS speed. • GPS heading. • Event detection: take off rocket exit

  4. Electronic and Programming :

  5. Electronic and Programming : Accelerometer G-Switch Pressure Sensor Microcontroller BS2 EEPROM 256k TemperatureSensor Voltage Regulator

  6. Electronic and Programming : Acelerometer GPS Module

  7. Microcontroller: BS2 • Processor Speed: 20 MHz Turbo. • Program Execution Speed: ~ 12.000 RAM Size: 38 Bytes (12 I / 0, 26 Variable). • Scratch Pad RAM: 128 bytes. • EEPROM (Program) Size: 8 x 2 KBytes, ~ 4,000 PBASIC instructions. • Number of I / O Pins: 16 + 2 Dedicated Serial. • Current Draw @ 5 VDC: 40 mA Run, 350 uA Sleep. • Source / Sink Current per I / O: 30 mA / 30 mA. • PBASIC Commands: 61. • Package: 24-pin DIP.

  8. Pressure Sensor: Motorola MPX 4115th This sensor is an integrated circuit capable of measuring absolute pressure through a membrane system. It produce an output voltage proportional to 0.204 to 4.794V. • Temperature Sensor: Dallas DS1620 • The DS1620 is an integrated circuit that works as a digital thermometer and uses a SPI communication to communicate with the microcontroller. • EEPROM: Microchip 25LC256 SPI (256K) • EEPROM stands for Electrically-Erasable Programmable Read-Only Memory (electrically erasable and programmable ROM). It has a capacity of 32768 bits organized in 8-bit addresses. • 3-axis accelerometer Hitachi H48c • The 3-axis accelerometer Hitachi H48c is an integrated device type MEMS capable of measuring gravitational forces (g) on 3 axes, ranging from 0 to ± 3g • A G-Switch is a switch whose state depends on the acceleration forces.  • GPS: Parallax receiver Module The Parallax Global Positioning System (GPS) Receiver Module is a fully integrated, low-cost unit completed with an on-board patch antenna.

  9. And the Energy….

  10. Cansat Device Flight Data Analysis: EEPROM FULL EXCELDIRECTLY EXCEL SpreedSheet GRAPHiCS • GPS Track on Google Earth • Data table • Graphics and Diagrams Google Earth

  11. Structure subsystem Objetives: • Protect the electronics and support the parachute • Desing an fiberglass structure. • Minimizate the aerodinamical drag

  12. Structure subsystem Desing: • Fiberglass • Two parts • Sizes: long = 11.5 cm radio = 3.3 cm

  13. Structure subsystem Construction process: • Plaster mold

  14. Structure subsystem Fiberglass and Epoxi resin

  15. Structure subsystem Sand and paint

  16. Recovery subsystem Objectives: • To desing a parachute acording to the weight of the cansat. • To esing an aperture sytem. • Recover the cansat safely.

  17. Recovery subsystem Our parachute desing: • Made of Nylon. • Spherical shape. • Size: R = 0,375 m • Braided Nylon threads, 1 meters long

  18. Recovery subsystem • Parachute construction: • Cut 8 isosceles triangles of Nylon • Sewn the triangles • Make 8 holes for the threads • Make a hole in the center

  19. Recovery subsystem Parachute bending: • Fold in a half the parachute, keeping the thread taut. • Hold the centre of the parachute,and bend small triangles, from the ends toward the center. • From the far end of the threads start to wind the parachute and then continue rolling the threads. • Anchor the last thread to the structure of the cansat.

  20. Budget of the mission: • Electronic Subsystem……………………………………..TOTAL: 190€ • Structure Subsystem………………………………………..TOTAL: 19€ • Parachute and Recovery subsystem……………….TOTAL: 6€ TOTAL: 215€

  21. CATSAT TEAM

  22. Yeahhh!!..Also in our WEBSITE!! Free Project Downloading: Sketches, codes, schematics .. http://sites.google.com/site/catsatteam/

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