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Amateur Radio on Balloons - Ilmari 2003 Weight |
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The Ilmari Project is not a Viestikallio Project, this just happened to be a place where we could host these web-pages...
Ilmari WeightWe use term "weight" with unit of "gram", although in reality we handle boyancy force, and mass-gravity (m*g) force, but things are more convenient to be counted in grams, rather than in Newtons. TOTEX Tx1200 balloon gross lift is given as: 4250 g Finnish aviation norms (only finnish online, swedish offline) "OPS M1-1," section 9, the maximum mass of single box of "lightweight unmanned balloon equipment" is given: 3000g. (A bit over 6 lbs for you non-metric folks..) Total system weight limit sans balloon: 4000g Subsystem masses: Table in multiple forms: Gnumeric XML (primary), MS Excel. The table further down there...
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| # | Description | Unit weight (g) | Unit power drain (mW) | Unit count | Duty cycle (%) | Weight (g) | Power (mW) | Power in recovery mode (mW) |
| 1 | 80m ½-lambda antenna wire (0.25mm cu) | 20 | 1 | 20 | 0 | 0 | ||
| 2 | 80m CW/MFSK TX (prototype) | 75 | 1800 | 1 | 100% | 75 | 1800 | 540 |
| 3 | 80m Hertz feed (est) | 30 | 1 | 30 | 0 | 0 | ||
| 4 | APRS TX -18V PSU | 30 | 300 | 1 | 10% | 30 | 30 | 30 |
| 5 | APRS TX (70cm) RF parts | 36 | 980 | 1 | 10% | 36 | 98 | 98 |
| 6 | APRS TX antenna (70cm dipole?) (estimate) | 30 | 1 | 30 | 0 | 0 | ||
| 7 | ATV 1.3 GHz Big-Wheel proto (Cu) | 29 | 1 | 29 | 0 | 0 | ||
| 8 | ATV 1.3 GHz band-pass filter | 15 | 1 | 15 | 0 | 0 | ||
| 9 | ATV 1.3 GHz Tx driver | 100 | 2000 | 1 | 100% | 100 | 2000 | OFF |
| 10 | ATV 1.3 GHz TX PA | 27 | 3300 | 1 | 100% | 27 | 3300 | OFF |
| 11 | ATV CMOS Video Cameras w/o window | 7 | 200 | 2 | 50% | 14 | 200 | OFF |
| 12 | ATV image overlay + GPS IF; LINREG->SWREG | 40 | 450 | 1 | 100% | 40 | 450 | OFF |
| 13 | Balloon Lift Reserve | 250 | 1 | 250 | 0 | 0 | ||
| 14 | Balloon TOTEX TX1200 | 1200 | 1 | 1200 | 0 | 0 | ||
| 15 | Chassis (estimate) | 200 | 1 | 200 | 0 | 0 | ||
| 16 | GPS FastraX µTracker02 | 7 | 210 | 1 | 100% | 7 | 210 | 210 |
| 17 | GPS Patch Ant + GP + LNA | 51 | 30 | 0 | 100% | 0 | 0 | 0 |
| 18 | GPS Patch Ant + GP, passive | 17 | 0 | 1 | 17 | 0 | 0 | |
| 19 | IHU (estimate) | 150 | 350 | 1 | 100% | 150 | 350 | 350 |
| 20 | Lithium - thionyl chloride battery; D-size | 106 | 4 | 100% | 424 | 0 | 0 | |
| 21 | Lithium battery set fuses (estimate) | 10 | 1 | 10 | 0 | 0 | ||
| 22 | Parachute (estimate) | 400 | 0 | 0 | 0 | 0 | ||
| 23 | Parachute, LIGHTWEIGHT (estimate) | 150 | 1 | 150 | 0 | 0 | ||
| 24 | Piezo buzzer | 50 | 50 | 1 | 0% | 50 | 0 | 25 |
| 25 | Radar reflector, aluminized paper, bigger | 36 | 1 | 36 | 0 | 0 | ||
| 26 | Radar reflector; aluminized paper | 9 | 0 | 0 | 0 | 0 | ||
| 27 | Radar reflector; balsa+mylar | 38 | 0 | 0 | 0 | 0 | ||
| 28 | Ropes + sticky tapes (estimate) | 200 | 1 | 200 | 0 | 0 | ||
| 29 | Styrofoam 50x260x300 | 104 | 0 | 0 | 0 | 0 | ||
| 30 | Styrofoam 50x300x300 | 113 | 0 | 0 | 0 | 0 | ||
| 31 | Styrox box, bottom | 202 | 1 | 202 | 0 | 0 | ||
| 32 | Styrox box, lid | 121 | 1 | 121 | 0 | 0 | ||
| 33 | Translator 2m Rx antenna + cable(est) | 100 | 1 | 100 | 0 | OFF | ||
| 34 | Translator 70 cm Tx antenna proto + cable | 47 | 1 | 47 | 0 | OFF | ||
| 35 | Translator controller interface (est) | 0 | 500 | 1 | 100% | 0 | 500 | 500 |
| 36 | Translator DTMF FM receiver (<15mA@9V) | 35 | 135 | 1 | 100% | 35 | 135 | 135 |
| 37 | Translator IF mixers/Oscs/etc. (est) | 250 | 500 | 1 | 100% | 250 | 500 | OFF |
| 38 | Translator PA proto-1 | 76 | 0 | 0 | 0 | OFF | ||
| 39 | Translator PA proto-2 | 116 | 3800 | 1 | 100% | 116 | 3800 | OFF |
| 40 | Translator receiver (est) | 0 | 500 | 1 | 100% | 0 | 500 | 500 |
| 41 | Translator UHF driver (est) | 0 | 1300 | 1 | 100% | 0 | 1300 | OFF |
| 42 | Wire cutters | 50 | 10000 | 2 | 0% | 100 | 0 | 0 |
| Total weight (g) | Total power (mW) | ATV & Xlator OFF (mW) | ||||||
| TOTAL: | 4111 | 15173 | 2388 | |||||
| Lift Budget: / Power Budget / Battery Voltage: | 4250 | 14000 | 13.4 | |||||
| Current at 13.4V battery voltage; A | 1.132 | 0.178 | ||||||
| Maximum recommended continuous current: 1.800 A | ||||||||
| Available (+) / Excess(-): | 139 | -1173 | ||||||
| TOTAL weight sans Balloon, Parachute, and Lift reserve | 2511 | |||||||
| Weight limit sans balloon and parachute (Finnish CAA OPS M1-1: sect 9.1.a) | 3000 | |||||||
| Available (+) / Excess(-): | 489 | |||||||
| Battery capacity Ah (SAFT LSH20, 1A discharge, +10°C) | 7.00 | 7 | ||||||
| Mission hours | 3.00 | 6.00 | ||||||
| Expenditure during mission; Ah | 3.40 | 6.79 | ||||||
| Capacity after mission; Ah | 3.60 | 0.21 | ||||||
| Hours in recovery mode | 20.22 | 1.16 | ||||||
| Capacity after 3.0 hours search & retrieval; Ah | 3.07 | -0.33 | ||||||
Matti Aarnio <matti.aarnio@zmailer.org>; OH2MQK
