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====== Data ======

Collection of stats from microballoon flights in an attempt to understand the concepts of foil balloons and super-pressure.

===== Flight Stats =====

^ Flight ^ Date ^ Payload mass (g)^ Balloons ^ Fill (%) ^ Ascent rate (m/s) ^Burst alt (m)^ float altitude (m) ^ Float time (s) ^ Descent rate (m/s)^ Free Lift (g) ^ Notes ^
| PicoAtlas I |17/01/11|100|2x92 + 2x48|50|0.4|2400|n/a|0|0.5| n/a | Lost 1x48 resulting in slow descent|
| PicoAtlas II |30/01/11|95|4x92|50|0.88|7200|n/a|0|1| n/a | 1x92 burst |
| Picochu-1 |06/08/11|105|4x92|100|1.8|4200| n/a |0|1| n/a | |
| Picochu-2 |14/10/11|86|4x92|45-50%|1.1|7263| n/a |unknown|unknown| n/a | Lost GPS signal at 7263m (payload was still ascending, probably due to the effects of the cold on the lipo battery, temp hit -15c) Carrier Signal was still obtained for at least 3 hours after losing GPS, this indicates a possible float, would estimate a 7.5km - 8km float|
| PicoAtlas IV | 25/08/11 | 135 | 4x92 | 70 | 0.6 | - | 6200 | 600+ | n/a | n/a | out of radio range |
| PicoAtlas V| 05/09/11 | 120 | 4x92 | 60 | 0.6 | 1551 | - | - | 1 | n/a | 1x92 burst |
| PicoChu-3| 28/11/11 | 106 | 4x92 | 60 | 1.5 | 869m | - | - | 1 | n/a | Presume burst, poor weather a factor possibly. |
| PicoAtlas VI MK1| 24/12/11| - | 1x92 | - | 0.5 | - | ~3000 | 4200 | 0.28 | n/a | Unusual float|
| PicoAtlas VI MK2| 07/01/12| 28 | 1x92 | - | 0.5 | - | - | - | - | n/a | failed early after launch|
| Ozzie1| 11/03/12 | 35 | 1x92 | 60 | 1.3 | - | 5000 | 27360 | - | n/a | Lost contact in France. |
| PicoChu-4| 30/03/12 | 77 | 2x92 | 50 | 0.8 | 4238m | 3890m | 10mins | 1.1 | n/a | Successfully flight, and recovery, 2 small periods of float around 4km, payload recovered 20miles north west of salisbury |
| PicoAtlas VI MK3 | 11/04/12 | 33.3 | 1x92 | 60 | 1.0 | - | 4500 | 8400 | - | n/a | Lost contact over the North Sea however was heard at 1830UTC briefly suggesting 7hrs + of float |
| PicoChu-5| 21/04/12 | 55| 1x92 1x79 | 90 | 0.8 - 7.1| 5319m | - | - | 1.5 | n/a | Very unusual flight, payload was sucked into a thunderstorm cell and gained an ascent rate upto 7m/s at one point, failed to achieve float, landed on the MOD target range for tanks on salisbury plain, payload lost. |
| BONZO1| 07/05/12 | 100| 3x92 | >90 | | 540m | - | - | | n/a | Short flight to test tracker HW. Assume overinflation od balloons, resulting in at least one early burst. Payload recovered less than 20km away, with two bursts. |
| PicoAtlas VI MK4| 04/07/12 | 29| 1x92 | 60 | 0.8 | - | 4100 - 5600 | 61200 | - | n/a | 17 hours float from Kent to Scotland, survived overnight, batteries ran out |
| OZZIE3| 15/07/12 | 55| 1 x 0.21m3 custom | 50 | 1.6 | - | 7300 | 600+ | - | n/a | transmitter fail - went out of range |
| PAVA2| 12/08/12 | 26| 1 x 92 | - | 1.0 | 7194 | - | - | 1.0 | 35 | Neck lift 35g |
| BLT31.8 (KT5TK-11)| 06/10/12 | 46 |2x92 + 1x80 | 50/50/60 | 0.9 | 5760 | n/a | 0 | 0.9 | 38 | |
| [[https://www.thecraag.com/CRAAG1_Launch_10th_October|CRAAG1]]| 10/10/12 | 35 |1x92 | - | 1.7 | 4688 | - | - | 6.7 | 17 | balloon split at neck resulting in the payload descending rapidly with only the balloon neck and valve attached. |
| Full House (KT5TK-11)| 19/10/12 | 55 | 5 x 80 | ~50 | 0.9 | n/a | 5600 ... 3600 | 21600+ | 0.01 | 34.5 | still floating (probably in the water of the Gulf of Mexico) |
| PicoAtlas VII | 20/10/12 | 31 | 1 x 92 | ~65 | 0.8 | n/a | 4000 | 57600+ | 0.3 | 1.5 | across North sea, around top of Denmark, lost contact in Sweden ?descent, travelled over 1050km |
| PicoBuzz2 | 24/10/12 | 41 | 1 x 92 | ~60 | 1.0 | 3700 | 2600 | 26000 | 0.45 | 8 | Initial float for 2 hours, then dropped 1000m before floating again |
| BLT31.TWELVE (K5SAF-11) | 03/11/12 | 59 | 3 x 80 | ~50 | 1.4 | 1888 | n/a | 0 | unknown | 29 | Was torn down by a heavy thunder storm short after launch |
| CRAAG1-Camera | 26/11/12 | 50 | 1x92 | - | 1.0 | 3190 | - | - | 6 | 11 | Payload caught in 15m treetop, not yet recovered. |
| PicoAtlas VIII | 15/12/12 | 35 | 1x92 | ~65 | - | 101 | - | - | - | - | Not enough lift, recovered 2km away next day|
| NANU 1 | 15/12/12 | 33.5 | 1x92 | ? | 0.61 | 3189 | No | - | 1.12 | - | Lost over North Sea off Norfolk|
| NANU 2 | 6/11/13 | 33.5 | 1x92 | ? | 0.83 | 4423 | No | - | 0.64 | - | Lost over North Sea off Suffolk|
| BONZO4 | 23/02/2013 | 80 | 2x92 | ? | 1.0 | 2256  | No float | - | - | 10g | One foil burst and caught in tree nr. Blandford. Suspect overinflation and stress to neck whilst tethered for extended period awaiting GPS lock.|
| PAVA | 02/03/2013 | 29 | 1x92 | ? | 1.2 | 5606  | No float | - | 11 | 1g | Burst and landed in a field near Sheffield. Recovered a day later still TXing|
|[[projects:picoatlas:picoatlasix|Picoatlas IX]] | 02/03/2013| 37 | 1x92 | ~60 | 0.7 | - | 3600 | 93600| - | 1g | 33.9hr long flight, 2 float periods, lost contact over Wales|
| PSB | 10/03/2013 | 79 | 2x92 | ? | 1.1 | 4255  | No float | - | 0.9 | - | PICO launch near Wycheproof, Australia|
| BONZO6 | 14/04/2013 | 98 | 2x92 | ? | 0.5(avg) | 2018  | No float | - | 0.61 | ~3g | Float attempt, burst due to heavy payload. No sigs heard from landing site. Lost.|
| PicoHorus-2 | 20/4/2013 | 23 | 1x92 | 50%? | 1.1 | 4930 | No float | - | 0.5-1 | 29g | Float attempt, small rupture at neck found on landing. Payload recovered. |
| [[http://leobodnar.com/balloons/B-2/|B-2]]| 2/7/2013 | 13.4 |1x92 | ~50% | 0.8 | 6535 | - | - | 0.9 | 1.3g | Testing DominoEX transmit mode and new tracker hardware|
| [[projects:picoatlas:picoatlasx|PicoX]]| 6/7/2013 | 28.8 |1x92 | ~50% | 0.9 | 5100 | 4900 | 7200 | 1 | - |Test day launch|
| NANU 3 | 6/7/2013 | 34.3 | 1x92 | ~75% ? | 0.92 | 3721 | No | - | 1.3 | - | Day launch test, Recovered Elvedon - Small split due to seal sepration on side of balloon|
| [[http://leobodnar.com/balloons/B-3/|B-3]]| 6/7/2013 | 13.4 |1x92 | ~50% | 0.9 | - | 6750 | 4500 | - | 1.5g | Successful float.  Downlink lost|
| [[http://leobodnar.com/balloons/B-4/|B-4]]| 7/7/2013 | 12.5 |1x92 | ~50% | 0.8 | - | 6800 N 7700 D | 56000 | - | 1.3g | Successful float.  AAA run out of power after 19 hours |
| [[http://leobodnar.com/balloons/B-5/|B-5]]| 11/7/2013 | 14 |1x92 | ~50% | 0.8 | - | 6100 N 7000 D | 57600 | - | 1.3g | Collected temperature and pressure readings inside the balloon envelope |
| [[http://leobodnar.com/balloons/B-6/|B-6]]| 14/7/2013 | 21 |1x92 | 56% | 0.7 | - | 5400 N 6800 D 6300 N | 247000, 69 hours | - | 1.3g | AA battery. Battered by French weather but recovered|
| [[http://kt5tk.wordpress.com/2013/07/25/some-pictures-facts-about-blt33-7-af5li-11/|AF5LI-11]]| 25/07/13 | 26.2|3x80|~40%|0.5|-|6500 N 7150 D|82814|0.74|6.5g|slight He loss during the day|
| [[http://ukhas.org.uk/projects:jimbob:launch3|HABTRK]]| 07/08/13 | 38g|1x92|~60%?|0.9 avg|5,000m|na|na|5.5|~4.5g|-|
| [[http://leobodnar.com/balloons/B-10/|B-10]]| 24/8/2013 | 10.7 |1x92 | 47% | 0.8 |   | 8300 | 7 hours | 1.0 | 1.8g |Solar power. Descended, rested on the ground, refloated again but brought down by rain. Recovered with  original free lift. Descent reason unknown.|
| [[http://leobodnar.com/balloons/B-11/|B-11]]| 1/9/2013 | 10.7 |1x92 | 50% | 1.0 |  | 8700 N 9100 D| 187 hours | - | 3.0g |Solar power. Yo-yoing on ascent |
| [[http://leobodnar.com/balloons/B-12/|B-12]]| 2/9/2013 | 8.5 |1x92 | 50% | 1.0 |  | 9100 N 9400 D| 164 hours | - | 3.5g | Battery failure, solar only |
| [[http://ava.upuaut.net|PAVA]]| 12/01/2014 | 13 |1x92 | ? | 1 |  | 7000 N 8000 D| 26 hours | - | 1.5g | Battery failure |
===== Graphs (8/7/13) =====

{{:projects:microballoons:massvsfloat.png|}}

{{:projects:microballoons:floatimevsalt.png|}}

{{:projects:microballoons:ascentratevstime2.png|}}

{{:projects:microballoons:foil-floaters-leo.png|}}