IR CAMERA EUSO BALLOON JEM-EUSO Balloon CDR, CNES, Toulouse. December 18, 2012 José Santiago Pérez Cano. Orbital Aerospace, Madrid, Spain. Héctor Prieto, L. Del Peral & M. D. Rodriguez Frias. UAH, Madrid, Spain.

Outline 1st Flight Mission objectives IR Camera Mechanical configuration Thermal configuration Power Battery Subsystem IR Camera Budgets IR Camera schedule

1st Flight Mission Objectives  To validate the IR camera mission concept  To obtain real data with ULIS UL micro bolometer IR camera  To assess the wavelength bands and filters selection 8.55  m band IR camera funding achieved to be on the 1 st flight and test the 8.55  m filter band for the IR camera/JEM-EUSO baseline  To validate and optimize Temperature Retrieval Algorithms  To validate and optimize Stereo Vision Technique  To validate and assess part of Calibration Strategy (  Shutter)

IR Camera Detector (UL 04171) Technology  -Si Manufacturer: ULIS Proximity electronics and Signal digitalization Resolution: 640x  m, 16bits NETD < 120mK Frame Rate: 0,5 FPS Power consumption: <300 mW (without TEC)

IR Camera Operational Bands Band 1: CWL: (+0, -0.2)  m FWHM: 0.85 ± 0.1  m Transmittance > 80; Transmittance Rejection Band: 7 to 10.0  m < 0.01; 11.4 to 20  m < 0.01 Band 2: CWL: 8.55 (+ 0.2, -0)  m FWHM: 0.85 ± 0.1  m Transmittance > 80 Transmittance Rejection Band: 7 to 11.3  m < 0.01; 12.7 to 20  m < 0.01 FOV≈12º

COTS IR Camera ICU (CPU/MEM) DC/DC converter IRX CAM640 FILTER 1 FILTER 2 OPTICS Battery Pack Sensors On/off Status leds External power supply connection Ethernet connection Alluminium panel 12V 5V 28V

IR Camera Data Management and Storage Subsystem CPU: TX-7800, with a TS-ETH10 expansion board by means of PC104 bus Redundant storage system: 2 mirrored flash memory hard disks ( Innodisk) Watchdogs timers OS: Debian Linux (Kernel 2.6) Sensors: Temperature, Humidity and Presure digitizer board (TS-ADC24 board)

Baseline COTS IR Camera IRX Camera

IR Camera

Mechanical Configuration EUSO IR Camera accomodation  Located on the external side of the Gondola  Totally isolated  Autonomous batteries EUSO IR Camera mechanical booth  Withstand environmental conditions  Water proof  Passive (alluminium panel radiator) and active thermal control (heater) EUSO Balloon Gondola

Mechanical Configuration

Complete system weight: 27.6 kg 15g (vertical) scenario 15g = 27.6x15 = 414 kg. 6x3 screw option: Weight supported per screw: 414/18 = 23 Kg per screw 5x3 screw option: Weight supported per screw: 414/15 = 27.6 Kg per screw

Thermal Configuration Radiator: emissivity 0,15 IR Earth load: 260W/m2 Albedo: 0,12 Internal dissipation: -Camera 7.8W -CPU 5W -DCDC 5W -Other 2W Housing-radiator: 300W/m2.K Housing: emissivity 0,7 15mm thick Alu Heat sinks: -80ºC ( W/mK) (View factors computed in ESARAD)

Thermal Configuration Cold Case: -Operational, steady state -Night observation Temperatures: -Camera 22ºC -CPU 14ºC -DCDC 14ºC

Thermal Configuration Hot Case: -Non operational, steady state -No observation This thermal case includes solar fluxes

IR Camera Battery Pack technical specifications IR Camera PWP 24h Altitude40km Pressure3mBar Power30W/25.71Ah, 28V Operation Duty24h (R ) Operating Temperature Range within -40˚C/+70˚C Size(230x145x160)mm Mass5kg

IR CAMERA Budgets Preliminary estimation has been done and reported:  SIZE 235 x 240 x 270 mm3  MASS 27.6 Kg  POWER 30W Functional Requirements The EUSO Balloon IR camera subsystem will be reusable for all the balloon campaign opportunities.

IR Camera Schedule IR CAM MILESTONESDATE PDR/CDRDecember CNES Filter fabricationJanuary 2013 Hardware assemblyJune 2013 TestingJuly 15th 2013 FM deliverySeptember 15th 2013 FIRST EUSO-BALLOON FLIGHTSPIRING ONTARIO (CANADA)

Questions? Thanks for your attention