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EUSO BALLOON MISSION ANALYSIS. CNES TOULOUSE 18th December 2012. MISSION REQUIREMENTS BALLOON FLIGHT PROFILE and WINDS LAUNCH SITES (TRAJECTORIES, BEST PERIODS) MOON and other CONSTRAINTS CONCLUSION. MISSION REQUIREMENTS A- level : Technological demonstrator. - PowerPoint PPT Presentation
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EUSO BALLOON RCD 18.12.2012 J. EVRARD
CNES TOULOUSE 18th December 2012
EUSO BALLOON MISSION ANALYSIS
SO
MM
AIR
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EUSO BALLOON RCD 18.12.2012 J. EVRARD2
MISSION REQUIREMENTS
BALLOON FLIGHT PROFILE and WINDS
LAUNCH SITES (TRAJECTORIES, BEST PERIODS)
MOON and other CONSTRAINTS
CONCLUSION
EUSO BALLOON RCD 18.12.2012 J. EVRARD3
MISSION REQUIREMENTS A- level : Technological demonstrator
[MRA2] : at least 3 hours moonless and 3 hours with moon (<25 % full moon).
The absolute minimum requirements : 2 hours during the night with moon (<25 % full moon).
[MRA3] flight data at float level shall include sudden background enhancements due to city lights etc…
EUSO BALLOON RCD 18.12.2012 J. EVRARD4
MISSION REQUIREMENTS B- level : Real data and background study
[MRB1] A part of the above B-level requirements may already be met during a first balloon
1st priority : over ocean / moonless
2nd priority : over ocean / moon
3rd priority : over land / moonless
4th priority : over land, moon
Accordingly, the launch site/season for a second flight will be chosen to allow for a flight over an ocean, the precise launch date shall allow to observe at least 2h (TBD) at a float level of 3 mbar.
EUSO BALLOON RCD 18.12.2012 J. EVRARD5
MISSION REQUIREMENTS C-level (precursor mission):
[MRC1] Long duration flight operation (≥ 50 hours at night, TBC) of the EUSO-Balloon instrument in trigger mode and in low background configuration
[MRC4] Choose launch date to allow for a part of the flight over a high reflectivity surface (clouds, snow ...)
EUSO BALLOON RCD 18.12.2012 J. EVRARD6
Balloon flight profileand Winds
Ascent ~ 3 hours
Ceiling : Few hours, 1 night or more…
Altitude
Time
Descent : 30 min
40 Km
Balloon size for EUSO :
400 000 m3 -> 40 Km altitude
Stratospheric winds :
From West : September <-> April
From East : May <-> August
Turn around period : ~2 weeks,
Ideal for long duration flights
Dificult for trajectory forecasts
EUSO BALLOON RCD 18.12.2012 J. EVRARD7
BIG BALLOON LAUNCH SITES
Kiruna Sweden : Well known site, opened
End August <-> mid September, long duration flights possible (Turn Around), Lakes are not frozen.
Mid September <-> end October, Gulf of Buthnia possible, landing in Russia possible too
EUSO BALLOON RCD 18.12.2012 J. EVRARD8
BIG BALLOON LAUNCH SITES
Timmins Canada : New site, first launches next March 2013
May and September, long duration flights possible June <-> August, fly over the Lake Superior possible with USA agreement
EUSO BALLOON RCD 18.12.2012 J. EVRARD9
BIG BALLOON LAUNCH SITES
French sites Aire and Gap : Closed for safety reasons (2006)
Should be opened with sea recovery (2015 TBC)
Perfect site for technological and real data acquisition
Ideal period : late May <-> mid June
EUSO BALLOON RCD 18.12.2012 J. EVRARD10
BIG BALLOON LAUNCH SITES
Alice Springs : CSBF launch site
Ideal period : Early November, possible later with other TM/TC Stations
Good site for cosmic ray acquisition
Balloon campaign expected for PILOT Mission 2017 November, December
EUSO BALLOON RCD 18.12.2012 J. EVRARD11
BIG BALLOON LAUNCH SITES Other sites possible
Andaman Islands : 1300 Km over Indian Ocean, 550 Km over India. Possible cooperation. When ?
Florida to Japan : 1500 Km over Gulf of Mexico, 1300 Km over USA and Mexico, 11200 Km over Pacific ocean. Sea recovery in South Japan archipelago. Gustavo is promoting this flight with AEM and NASA. When ? After CNES flights
New Caledonia to Australia : 1500 Km over the sea, 3700 Km over Australia. When ?
EUSO BALLOON RCD 18.12.2012 J. EVRARD12
MOON and other CONSTRAINTS
Moon
Maximum : 25% of the full moon => ~ 8 days per month usable
If MRA2 objectives must be reached in a single flight => only 4 days possibles on the Timmins 2014 Spring campaign (April and May)
Other constraints
A balloon is launched when : Gondola is ready to fly
Mission objectives are reachable
Trajectory is acceptable (safety, recovery)
Ground weather conditions are good
EUSO BALLOON RCD 18.12.2012 J. EVRARD13
HOW MANY FLIGHT ?First flight : Timmins 2014.
2 hours or much more with moon <= 25%
Clouds, snow, water, duration
Sudden background enhancements due to city lights etc…
Second flight : Timmins, Kiruna or Aire sur l’Adour, 2015 ?
Kiruna : Clouds, snow, water
Sudden background enhancements due to city lights etc…
Aire : Clouds, snow, water, duration
Sudden background enhancements due to city lights etc…
Third flight : Timmins, Kiruna or Aire sur l’Adour, 2016 or Alice Springs , 2017 ?
Alice Springs : Clouds, snow, water, city lights, duration
EUSO BALLOON RCD 18.12.2012 J. EVRARD14
HOW MANY FLIGHT ?
Sites have advantages and inconveniences
Lights Clouds Snow Water/sea Duration
3 days
Timmins
Kiruna
Aire sur l’Adour O O
Alice Springs O O
With USA Agreement
It’ll depend on results of each flight and on CNES balloon campaigns decided
but 3 flights seem a minimum
Florida to Japan flight with CSBF will be « Frosting on the cake »
EUSO BALLOON RCD 18.12.2012 J. EVRARD15
Risques vol BSO départ Aire sur l’AdourPartie quantitative
Altitude
Temps
40 Km
Ascent risk : 1.05 10-5
Risk at ceilling : 0.58 10-5
End of flight risk: 0.15 10-5
-------------
Flight risk : 1.78 10-5
Aire Landes Mer
Maximum risk : 3.0 10-5