Supersonics, RF Harmonics, Digital Electronics and Teddy-Bears:

Ed Moore (M0TEK) and Fergus Noble (M0NBL)Cambridge University Spaceflight

A Near-Space Adventure

Nova

Latex Balloon

Explosive link thing

Parachute

Payload

Antenna

Banana

Nova

Flight ComputerUSB Microcontroller (ARM7)

Memory Card

Flight Computer (reverse)GSM Modem GPS

Getting InvolvedFree Decoding Software - FLDIGI

434.650 MHz LSB:

RTTY 50-baud 7-bit ASCIIDominoEX 22

$$Badger,4528,12:23:06,52.2135,0.0964,28320,2,0,1

Callsign Secondssince

launch

Time Latitude Longitude Altitude

more details at www.cuspaceflight.co.uk

(Google Earth 3D)

http://vimeo.com/1626665

Outreach

http://www.vimeo.com/5686366

Tem

p °C

time

Nova

Aurora

‘Zero Pressure’Balloon

Aurora

Rocket

Rocket Launch Video:http://www.youtube.com/watch?v=uK80MXHQ5hA

Long duration, Long distance

434 MHz - L.O.S, small antennas3.5 - 14 MHz - over the horizon, long distance

DDS: Direct Digital Synthesis

~ £10Max Clock 400MHzMax signal (Nyquist) 200MHz

Fundamentalsignal

Clock Freq = 364.8 MHz Fundamental signal = 70MHz

364 + 70 = 434 MHz

NyquistLimit

§

Nova

AuroraMartlet

MartletMain Parachute

Avionics

Drogue Parachute

Motor

Rocket Launch Video:http://www.vimeo.com/3433474

COCOMlimit

Martlet

Altitude 60,000 ft 300,000ft

Velocity 1000 kts 3000 kts

Acceleration 4 G 50 G

Thermal Noise Floor

Acquisition

100Hz Naviagtion Output data