CubeSat is the world standard for small spacecraft.
1U is the standard cubesat size of 10x10x10 cm
3U is the standard cubesat size of 30x10x10 cm
6U is the standard cubesat size of 30x20x10 cm
Professionals – All-Russian championship movement in professional skills
SB – Solar battery
OBC – On-board control computer
Magnetic field magnetometer
AVS – Angular velocity sensor
RAW – "Raw" data – data generated by the sensor and not processed
Solar sensor – A sensor of the direction of the Sun
A reaction wheel is an electromechanical device, which is an electric motor with a wheel mounted on its axis of rotation, serves to orient and stabilize the satellite
Orientation – Turning the satellite in the right direction
Stabilization – Stopping the erratic rotation of the satellite
ERS – Remote sensing of the Earth (for example, taking photos of the Earth from space)