Super Ilmari-2003

Not quite to the Space!

Construction experiences for future Satellite projects.

We have long traditions of this type!

• Goals:
  • Activate ILMARI again at the sky
  • Activate new users, and new modes
• Payloads:
  • Linear transponder, 70cm in, 2m out
  • GPS+ARPS-TX (70cm) (interference caused transponder change)
  • 1.3 GHz ATV TX
  • Beacons:
    • 3.5 MHz CW telemetry (call, location, altitude)
    • 145 MHz translator mid-frequency CW telemetry
    • 436 MHz AX.25/APRS telemetry
• Instrumentations for the telemetry:
  • Battery voltage
  • translator output power (145 MHz)
  • AGC
  • temperatures inside, and outside

NOTE: Latter the translator frequency plans were flipped around due to RFI from 70cm APRS Tx.

• Payload largest/most complex of Ilmari flights so far
• Main payload is 70cm->2m linear translator, with +-50 kHz bandwidth. This accomodates simultaneously about 25 SSB stations. Mid-frequency will have a beacon giving CW telemetry of equipment functioning.
• Secondary payloads are telemetry beacon at 80m, APRS beacon at 436 MHz, GPS receiver, and ATV transmitter at 1.3 GHz.
• ATV transmitter is not running all the time, but in 15/45 second duty-cycle. Image content is live video from onboard cameras.
• Functions are controlled/monitored by Clement Engineering MIM module

NOTE: Latter the translator frequency plans were flipped around due to RFI from 70cm APRS Tx.

• Things to find out:
  • What will be system total mass
  • How large a balloon is needed
  • Power budget ? (multiple power sources ?)
  • Optimum mechanical construction (mass, impact shock tolerance, extreme cold survival, water tightness, floating) ?
  • Various licenses and permits ?
  • Schedule ?
  • Work-group people ?
  • Launch/tracking/recovery teams and their responsibilities ?

• Ideas and thoughts for the project:
  • Ilmari internal chassis and compartments made of thin double-glad FR4 board
  • Some circuitry can be assembled directly to chasis in rats-nest style
  • External shell of Styrox/Styrofoam box
  • Power supplies are Lithium primary batteries from spent single-use polaroid cameras, or something like that.
  • Colour camera module ?
  • Ascent speed adjustment with additional weight ?
  • Radar reflector of aluminium foil on top of Styrox ?
  • Ground-station software ?

• Payload construction:
  • Translator to be built "from the scratch"
  • 80m beacon exists (by -3MCK)
  • Vaisala module exists, to be tuned into suitable frequency, plus small modifications
  • GPS RX; FastraX or alike, ready module with NMEA output.
  • MIM we have, APRS and CW telemetry SW exists in OH6 region ?
  • 1.3 GHz ATX Tx to be built, camera module from shop
  • Metering instrumentation
  • Power supply to be distributed (independent supplies!)

• Resourcing:
  • Chief (scheduling, kicking people to do their thing): OH2LH
  • Payload manager (all payloads): OH2AUE
  • Constructors (makers of things): OH2KTB, OH2AUE, OH1MRH, OH2HOR, OH2HMS, OH1HHC, OH2LAK, OH1LIY, OH3MW, OH2LKV, etc..
  • Mechanics manager (makes sure that everything fits): OH2KTB
  • Acquisition (begs/buys parts): OH2LH
  • Regulatory contacts (permits/licenses): OH2LFM, OH6VM ??
  • Recovery honcho (track, search, and retrieval): OH2JBB, OH2LFM
  • Documentation and PR: (design, and construction documentation, publicity): PR: OH2MW, DOC: OH1MQK
  • Test manager (test design and execution): OH2JMS

• Scheduling:
  • TARGET: SUPERILMARI to fly in July 2003, or ??
    1. Final design by 10/2002
    2. Permits and licenses by 1/2003
    3. Chassis mechanics by: 2/2003
    4. Payloads ready, tested: 4/2003
    5. Integration complete: 5/2003
    6. Finishing and flight readiness 6/2003
    7. FLIGHT: 7/2003