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Attitude and Orientation Control System [AOCS]

Electromagnetic Unit (EMU) - Magnetic Torquer for Nanosatellites

  • Purpose: Creation of a dipole magnetic moment, the value of which is proportional to the current flowing through two independent windings. EMU is used in attitude control system of spacecraft for the orientation and unloading of the reaction wheel.
  • Year of release: 2019
  • Guaranteed service life (years): 5
  • Estimated production / delivery time (months): 3
  • Flight qualification of the product: Yes
  • Brief history of flight qualification: Ground experimental testing.
  • Possibility to adapt the product to customer requirements: Yes
ParameterValue
Working orbitsLow, medium and geostationary orbits
Mass of EMU0,027 kg
Magnetic moment≥0 ,2 А·m² throughout the operating temperature range
Residual magnetic moment≤ 0,001 А·m²
Number of windings1 or 2
Supply voltage5 ± 0,1 V
Power consumption≤ 0,2 W
Operating temperature rangefrom -20 to + 55 °С
Overall dimensionsØ9 х 64 mm

Electromagnetic unit (EMU) - Magnetic Torquer for nanosatellites.

Remark

There is an option to develop and supply EMU with magnetic moment from 0.2 to 2 А·m² according to customer requirements.