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Turning mechanisms with a spring drive can be used for one-time operation during the first 50 hours of staying in the orbit,
for smooth turn and fixation of the structural elements of various spacecraft (SC) systems in the operational position:
- solar arrays;
- booms with the scientific equipment;
- platforms with the antennas and the scientific equipment.
These mechanisms include a spring drive, a centrifugal regulator, an immobile and a turning flanges, a fixation unit, a spring cocking
device, a block of microswitches, a potentiometric sensor. |
| Turning mechanism | A | B | C | D |
| Angle of turn, deg. | 180 | 136 | 100 | 180 |
| Accuracy of fixation, ang.min. | ±30 | ±60 |
| Time of turn, s | 40 | 10 | 20 |
| Second moment of load, kg•m2 | 10 | 34,3 | 25,5 | 14,7 |
| Torque at the outlet shaft of the mechanism, N•m |
2,94 - 1,18 | 1,75 - 1,54 | 6,0 - 2,84 | 1,1 - 0,5 |
| Mass of the mechanism | 1,6 | 3,6 | 0,88 | 0,34 |
Turning Mechanisms with Electromechanical Drive
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The turning mechanisms with the Electromechanical drive can be used for one-time operation during the fist 50 hours of staying in
the orbit, for smooth turn and fixation of the structural elements of various spacecraft systems in the operational position:
- solar arrays;
- booms with the scientific equipment;
- platforms with the antennas and the scientific equipment.
These mechanisms include an electric drive, a reducer, an immobile and a turning flanges, a safety clutch, a fixation unit,
a block of microswitches, a potentiometric sensor. |
| Turning mechanism | A | B | C | D | E | F | H |
| Angle of turn, deg. | 180 | 30 | 90 | 45 | 90 |
| Accuracy of fixation, ang.min. |
±5 | ±30 | ±1 | ±30 |
| Time of turn, s | 60 | 200 | 60 | 150 | 100 | 10 | 30 |
| Second moment of load, kg•m2 |
4,7 | 9,5 | 0,6 | 16,8 | 14,3 | 0,3 | 3,6 |
| Torque at the outlet shaft of the mechanism, N•m |
108 | 402 | 108 | 804 | 402 | 33 | 412 |
| Supply voltage, V | 28 |
| Consumption current, A | 0,32 | 1,1 | 0,64 | 1,1 | 0,32 | 0,64 |
| Mass of the mechanism | 2,3 | 8,5 | 3,0 | 9,8 | 9,6 | 4,3 | 6,0 |
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