Mechanical Unit of Antenna Pointing System. Type 4
Glavkosmos
A two-degree-of-freedom electromechanical drive designed to provide precise rotation for spacecraft antennas in two mutually perpendicular planes.
Key figurescomparable across the catalogue
- Design life
- 19.5 years
- Lead time
- 6 months
Normalised to common units so this product can be compared with others in its category. The supplier's own wording is below.
As published by the supplier
- Year of release
- 2014
- Design life
- 15 years
- Lead time
- 6 months
- Rotation angle for each axis
- ±16 °
- Slew rate
- 0-7 °/min
- Measurement error of the rotation angle for each axis, not exceeding
- 60 arcsec
- Developed torque for each axis, not less than
- 30 N·m
- Load inertia moment, not exceeding
- 30 kg·m2
- Self-braking torque in a de-energized state of the electric motors for each axis, not less than
- 11 N·m
- Operating temperature range
- -30 to +60 °C
- Operational life defined by hours, not less than
- 88000
- Active lifetime
- 15 years
- Overall guaranteed lifetime
- 19.5 years
About
The Mechanical Unit of Antenna Pointing System, Type 4, is an electromechanical drive with two degrees of freedom. Its primary purpose is to facilitate the rotation of an antenna’s mounting plane relative to the control module’s mounting plane, enabling movement in two mutually perpendicular axes. This system supports both tracking and pointing operating regimes. Key features include a rotation angle of ±16° for each axis, a slew rate ranging from 0 to 7 °/min, and a measurement error of the rotation angle not exceeding 60 arcsec. It can develop a torque of at least 30 N·m per axis and handle a load inertia moment of up to 30 kg·m². The unit also features a self-braking torque of at least 11 N·m per axis when the electric motors are de-energized. Designed for a wide operating temperature range of -30 to +60 °С, it boasts an operational life of not less than 88,000 hours, an active lifetime of 15 years, and an overall guaranteed lifetime of 19.5 years. The product was released in 2014 with an estimated production/delivery time of 6 months.
Documentation
No public datasheet yet — request the datasheet / ICD from the supplier.