Mini-Dusty Payload AGF-218 UNIS, Longyearbyen - PowerPoint PPT Presentation

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Mini-Dusty Payload AGF-218 UNIS, Longyearbyen

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Viper IIIA, USA. Excalibur 2, Canada. RH 200-SV, India. Payload Internal. Heat insulation ... 4 voltage monitoring circuits 0-10 V. 4 current monitoring ... – PowerPoint PPT presentation

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Title: Mini-Dusty Payload AGF-218 UNIS, Longyearbyen


1
Mini-Dusty PayloadAGF-218UNIS, Longyearbyen
  • Sveinung V. Olsen

2
Content
  • Payload layout
  • Electronics
  • Telemetry
  • Experiments
  • Launch

3
Payload external
  • Diameter 54 mm
  • Length 1465 mm.
  • Weight 9,3 kg
  • Ejectable doors and nosecone
  • Thermal coating, nosecone
  • Motors
  • Viper IIIA, USA
  • Excalibur 2, Canada
  • RH 200-SV, India

4
Payload Internal
  • Heat insulation
  • Nosecone probes
  • Experiment section
  • Battery section
  • Electronics section
  • Transmitter section

5
Payload overview
6
Power system
  • Li- Ion battery
  • 2 cells, nominal 3.6 V each
  • 8.4 V fully charged
  • Charging circuit
  • Constant current (1.1 A) gt Constant voltage (8.4
    V)
  • Power regulators
  • 5V, 3.3V
  • Power switching
  • Pyro power, experiment

7
Housekeeping sensors
  • Aspect sensors
  • 3 axis magnetometer
  • 2 axis accelerometer /- 50 g
  • Temperature sensors
  • 1 onboard temperature sensor 0-125 deg C
  • 3 external temperature inputs
  • Power sensors
  • 4 voltage monitoring circuits 0-10 V
  • 4 current monitoring circuits 0- 4 A
  • 6 analog inputs, 12 bit 0-4.095V
  • 4 digital inputs
  • 12 bit resolution
  • 0-4.095 V input range

8
Pyro circuits
  • Pyrolelectric devices
  • Payload separation
  • Doors separation
  • Nosecone separation
  • 8 individual circuits
  • Controlled by PCM-encoder
  • Synchronized to Lift-off

9
PCM Encoder
  • Pulse Coded Modulation
  • 625 kbit/s bit rate
  • 8 timer signals
  • Connects up to 8 slave board
  • CPLD programmable logic
  • uC assembler code
  • ISP - In System Programming
  • Bi Phase-L output

10
(No Transcript)
11
Telemetry transmitter
  • Frequency 2,2279 GHz
  • Bit rate 625 kbit/s
  • Power 1 W
  • 4 antennas in tailfins
  • Stable oscillator 0.2 ppm
  • Slant range
  • Receiver stations
  • Andenes
  • Tromsø
  • Svalbard
  • mobile units

12
Telemetry format
  • Word length 8 bit (16bit)
  • Frame length 32 words (16 words)
  • Format length 32 frames
  • At 625 kbit/s
  • Frame rate 2,44 kHz
  • Format rate 76 Hz

13
Experiments inputs
  • Electrometers
  • Several versions available
  • 1-8 channels /slave board
  • Instrumentation amplifier
  • Adjustable gain
  • Digital interface, sounding rockets
  • CLK, MAJF, MINF, GATE,DATA

14
Launch events
  • Countdown from T- 3 h
  • Possible holds
  • Final science go T-3 m
  • Final payload go T-30 s
  • Liftoff
  • Booster burnout
  • Doors separation T44s
  • Nosecone sep T62s
  • Splash T300s

15
(No Transcript)
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