meap/p-bace launch and flight
DESCRIPTION
MEAP/P-BACE launch and flight. Martin Wieser Swedish Institute of Space Physics, Kiruna, Sweden and the MEAP/P-BACE team. Wanted: Payload. October 2007, Esrange: Test of a circumpolar balloon flight Scientific payload needed 35..40km altitude 100kg Ready for launch Summer 2008. 0 km. =. - PowerPoint PPT PresentationTRANSCRIPT
Page 2Kiruna, 9. Oct 2008, M. Wieser, IRF
MEAP/P-BACE launch and flight
Martin Wieser Swedish Institute of Space Physics,
Kiruna, Sweden
and the MEAP/P-BACE team
Page 3Kiruna, 9. Oct 2008, M. Wieser, IRF
Wanted: Payload
➲ October 2007, Esrange: Test of a circumpolar balloon flight
➲ Scientific payload needed
➲ 35..40km altitude➲ 100kg➲ Ready for launch
Summer 2008
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MEAP
Mars Environment Analogue PlatformA stratospheric balloon platform for technology tests
➲ Earth stratosphere ≈ Mars atmosphere at surface➲ Earth stratosphere is a natural test environment for
instruments for Martian landers➲ Use long duration stratospheric balloon flight for extended tests
Parameter Mars Earth (30..40km)Pressure [mbar] 6.3 12 .. 3Temperature [degC] -80 .. -20 -46 .. -23
0 km 35 km=
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P-BACE
Polar - Balloon Atmospheric Composition ExperimentA high resolution neutral gas mass spectrometer
➲ Built by University of Bern and Swedish Institute of Space Physics
➲ Mass spectrometer for planetary missions➲ Test fly the instrument design in a representative
environment and under realistic conditions➲ Measure atmospheric composition with high mass
resolution
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MEAP/P-BACE collaboration
D. Abplanalp, P. WurzUniversity of Bern, Switzerland
PI-Institution, P-BACE hardware
M. Wieser, L. KallaInstitutet för rymdfysik
P-BACE software, communication link,logistics
T. HedqvistEsrange Space Center
Balloon and platform
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P-BACE Sensor
➲ Neutral gas mass spectrometer of reflectron time-of-flight type with own vacuum system
➲ Mass resolution m/dm >= 1000
➲ Mass range:1.. 1000 amu/q
➲ One full mass spectrum every 65 seconds
➲ 6-7 orders of magnitude dynamic range (in 65 seconds)
➲ Sensor mass: 2kg
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P-BACE instrument
➲ P-BACE sensor head➲ Linux based control computer➲ Commercial data acquisition board
used for front end electronics and data recording
➲ Two 2400bps Iridium satellite links for telemetry and commanding
➲ Two GPS receivers➲ Two redundant 16GByte solid state
disks, recovered after landing➲ Auxiliary sensors for pressure and
temperature
➲ 90 kg➲ 150W➲ Pressurized vessel
73cm x 71cm x 56cm
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Semicircular flight
➲ ~14 days➲ Recovery in Sweden
➲ ~5 days➲ Recovery in Canada
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The balloon
11 Million cft~334 000 m3Helium
200 m
Gondola:~400kg, (total susp. weight on balloon ~900kg)
Solar arrays on all 4 sides,> 200W on illuminated side
Scientific payload: 90kg, 150W
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P-BACE on MEAP
3.7m boomGas inlet with microfilter
Iridium & GPSSatellites
Solar arrays
Platform control
Power distribution
Batteries
Redundant Iridium & GPS antennas
P-BACE pressure vessel
Gas feeding pump
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IntegratedGondola
➲ GPS and Iridium antennas
➲ Payload container
➲ P-BACE gas inlet boom
➲ Crash pads
➲ Solar pannels
➲ Ballast
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Operations
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Waiting for launch
➲ Launch window opened 9. June
➲ Several launch attempts but always bad weather
➲ In mean time: Testing, testing, testing... Improving procedures... A lot of coffee... ...
➲ Webcam (attempt.m2v)
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28. June 2008 05:07 UTC
Launch
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LaunchPreparations
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Filling
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Launch movies
➲ Webcam (webcamlaunch.avi)
➲ Launch movie 1 (launch_still_images.avi)
➲ Launch movie 2 (MVI_2340_rot.avi)
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Seen by many eyes...
Image: Stefan Bühler
Image: MST radar data
Launch05:07 UTC
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MEAP/P-BACE flight path
➲ Launched from Esrange, Sweden on June 28
➲ Semicircular flight following the summer polar vortex
➲ 116 hours flight time➲ 5818 km distance➲ Altitude 33..38 km➲ Landed in Canada,
135km from Umingmaktok, on July 3.
Background image: NASA, http://visibleearth.nasa.gov/
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Altitude profile
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Commanding and telemetry
IRF-K GSE
Iridium Modem A + B
Modem GPS A + B
IridiumGateway
Network
PTSN
Storage Storage A + B
P-BACESensor
Onboard computer
IRF Webserver
P-BACEGround segment
Short burst data (like SMS)
2400 bps
Iridium satellite netw
ork
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P-BACE data example
H2 N2
ArN
He
Quick look data:
Zoom in: Raw data No background
subtracted
Dynamic range: 6-7 orders of magnitude
Mass range:1-1000 amu/q, (1-50 shown)
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Termination
➲ Termination movie (balloon_termination.flv, Parachute test flight for Mars Science Lander /JPL, http://stratocat.com)
Image: Google
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3. July 2008 01:10 UTC
Landing
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Touchdown
Image: CSBF
Image: Google
MEAP on parachute as seen from recovery aircraft moments before touchdown.
Google shows many lakes....
Image: CSBF
Lucky landing on dry land...
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MEAP back on ground
MEAP with crashed solar panels (as planned) but otherwise completely intact. P-BACE was still recording GPS data!
MEAP with remainder of flight train and recovery helicopter in background
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Umingmaktok, Nunavut
MEAP gondola arrives (movie) (uming.mpg)
Umingmaktok airfield
135km to UmingmaktokImage: Google
CSBF recovery crew
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Solid state disk recovery
➲ Instrument was found in very good condition➲ Both disks were taken out of the instrument and data
copied successfully➲ Instrument prepared for transport by air
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Development timeline
FlightJune 28 - July 3, 2008
Flight rehearsal, two launch attemptsDuring June 2008
Integration with MEAP, final software tests
Begin June 2008
Shipping to Esrange, SwedenLate Mai 2008
Test & CalibrationApril - Mai 2008
Integration of P-BACEApril 2008
Onboard and ground software development
March 2008
P-BACE development + manufacturingNovember 2007 - March 2008
Decision to fly P-BACE on MEAPNovember 2007
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Summary
➲ Demonstrated fast development process➲ Very successful flight of MEAP/P-BACE➲ All objectives fulfilled➲ Valuable expertise gained by all involved parties
➲ Instrument back in Bern for refurbishment and post-calibration
➲ Data analysis in progress
http://www.irf.se/meap-pbace
Launch 22. October 2008
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Supplementary slides
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Atmospheric composition
Average measured 2000 at Mauna Loa Hawaii,http://cdiac.esd.ornl.gov/ftp/maunaloa-co2/maunaloa.co2The planetary scientists companion