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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 - PowerPoint PPT Presentation
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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 TreasuryJuan Fernández Parachute systemMiguel Ángel de Frutos Electronics and Programming
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.
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
Electronic and Programming :
Electronic and Programming :Accelerometer
Microcontroller BS2
TemperatureSensor
G-Switch
Pressure Sensor
EEPROM
256k
Voltage Regulator
GPS Module
Acelerometer
Electronic and Programming :
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.
Temperature Sensor: Dallas DS1620The DS1620 is an integrated circuit that works as a digital thermometer and uses a SPI communication to communicate with the microcontroller. 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.
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 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.
A G-Switch is a switch whose state depends on the acceleration forces.
And the Energy….
Flight Data Analysis:
ALTURA
650655660665670675680685690695700705710715720725730735740745750
16:07:41 16:09:07 16:10:34 16:12:00 16:13:26 16:14:53 16:16:19 16:17:46 16:19:12 16:20:38
Cansat Device
EXCEL SpreedSheet
• GPS Track on Google Earth
• Data table
•Graphics and Diagrams
EXCELDIRECTLY
GoogleEarth
Structure subsystemObjetives:
Protect the electronics and support the parachute
Desing an fiberglass structure.
Minimizate the aerodinamical drag
Structure subsystem
Desing: Fiberglass
Two parts
Sizes: long = 11.5 cm
radio = 3.3 cm
Structure subsystemConstruction process:
Plaster mold
Structure subsystem
Fiberglass and Epoxi resin
Structure subsystem
Sand and paint
Recovery subsystemObjectives:
To desing a
parachute acording
to the weight of the
cansat.
To esing an
aperture sytem.
Recover the cansat
safely.
Recovery subsystem
Our parachute desing:
Made of Nylon.
Spherical shape.
Size: R = 0,375 m
Braided Nylon
threads, 1 meters
long
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
Recovery subsystemParachute 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.
Budget of the mission:
Electronic
Subsystem……………………………………..TOTAL: 190€
Structure
Subsystem………………………………………..TOTAL: 19€
Parachute and Recovery
subsystem……………….TOTAL: 6€
TOTAL: 215€
Yeahhh!!..Also in our WEBSITE!!
http://sites.google.com/site/catsatteam/
Free Project Downloading: Sketches, codes, schematics ..
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