M-Cubed

M-Cubed is a miniaturized satellite built by students at the University of Michigan in a joint project run by the Michigan Exploration Laboratory (MXL) and JPL. It is an example of the popular CubeSat design for amateur satellites. It was launched from Vandenberg Air Force Base on October 28, 2011 atop a Delta II rocket. M-Cubed was launched as a secondary payload to the Suomi NPP satellite, along with AubieSat-1, DICE-1, DICE-2, Explorer-1 Prime, and RAX-2.[2]

M-Cubed
Mission typeTechnology/Education
OperatorUniversity of Michigan
COSPAR ID2011-061F
SATCAT no.37855
Mission duration11 years, 11 months and 27 days (elasped)
Spacecraft properties
Spacecraft typeCubeSat
Start of mission
Launch date28 October 2011 (2011-10-28)
RocketDelta II 7920-10C
Launch siteVandenberg SLC-2W
Orbital parameters
Reference systemGeocentric
RegimeLow Earth
Eccentricity0.0215612
Inclination101.7178°
RAAN229.4521°
Argument of perigee355.7858°
Mean anomaly120.6105°
Mean motion14.90323087 orbits/day
EpochJuly 7, 2014[1]
 

M-Cubed, short for Michigan Multipurpose Minisat, was designed as a technology demonstrator for a new FPGA-based image processing system intended for a future NASA mission, Aerosol-Cloud-Ecosystem, recommended by the Earth Science Decadal Survey.[3] The mission was also intended to validate the satellite bus design for use in future cubesat missions. The satellite uses a passive magnetorquer for attitude control, consisting of a large permanent magnet that aligns the satellite with the Earth's magnetic field. On-board control is provided by a Taskit Stamp9G20 microcontroller running Real time Linux.[2]

Following launch, MXL was unable to command M-Cubed, and observed anomalies in its transmitted data. MXL concluded that the M-Cubed CubeSat became magnetically conjoined to Explorer-1 [Prime], a second CubeSat released at the same time, via both satellites' attitude control magnets.[2][4] This is the first recorded instance of two satellites unintentionally and non-destructively latching together.[5] As a result of this incident, M-Cubed was unable to complete its mission.[2]

The M-Cubed mission was successfully re-flown as MCubed-2,[6] launched on December 6, 2013.[5]

See also

References
  1. "NORAD Catalog Number 37855". Retrieved July 9, 2014.
  2. "M3 / M-Cubed". eoPortal. Retrieved July 9, 2014.
  3. "Student-built satellite to prepare NASA instrument". Phys.org. October 26, 2011. Retrieved July 9, 2014.
  4. Springmann, J. C.; Bertino-Reibstein, A.; Cutler, J. W. (2013). "Investigation of the on-orbit conjunction between the MCubed and HRBE CubeSats". 2013 IEEE Aerospace Conference. p. 173. Bibcode:2013aero.confE.173S. doi:10.1109/AERO.2013.6497127. ISBN 978-1-4673-1813-6. S2CID 18625435.
  5. "MCubed-2". National Space Flight Data Center. August 16, 2013. Retrieved July 9, 2014.
  6. "MCubed-2". eoPortal. Retrieved July 9, 2014.
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