CubeTorquer

Low remanance torquers and coils

The main method of actuation for LEO satellites are magnetic torquers rods. CubeTorquer is a nano-satellite magnetic torquer that uses a specially treated ferrous core with ultra-low remanence and high linearity.

Ultra Low Remanance

When it comes to magnetic control on satellites, the most important thing is to remove all unwanted magnetic disturbances. One of the most common such disturbances is remanent magnetic dipoles left in parts of the satellite, after a torquer have been pulsed. For this reason we use a highly specialized material for the ferrous core of our rods. Further, we treat this material to ultimately give our rods ultra-low remanence

 

Ultra Low Remanance

When it comes to magnetic control on satellites, the most important thing is to remove all unwanted magnetic disturbances. One of the most common such disturbances is remanent magnetic dipoles left in parts of the satellite, after a torquer have been pulsed. For this reason we use a highly specialized material for the ferrous core of our rods. Further, we treat this material to ultimately give our rods ultra-low remanence

 

Compact.

In small satellites, there is a strong requirement to make things as compact as possible. The way the standard CubeSat boards are stacked makes it difficult to have three rods to form a 3-Axis system. For that reason we also offer a low-profile air-core coil that slots into the stack between the CubeSat PCBs. In this way, we can create a very compact 3-Axis magnetic control system.

Compact.

In small satellites, there is a strong requirement to make things as compact as possible. The way the standard CubeSat boards are stacked makes it difficult to have three rods to form a 3-Axis system. For that reason we also offer a low-profile air-core coil that slots into the stack between the CubeSat PCBs. In this way, we can create a very compact 3-Axis magnetic control system.

Specifications Summary

Functional Specifications

Nominal magnetic moment            ±0.24 Am 2 @ 2.5 V @ 20⁰C

Saturation magnetic moment         ±1.5 Am2

Linearity within ± 0.4 Am2               2.5 %

Residual moment                              < 0.48 milli-Am2

Resistance                                          29-31 Ω

Inductance                                         0.15 H

Physical Specifications

Overall length                                60 mm

Overall diameter                           10 mm

Rod core diameter                         5 mm

Rod core material                          Supra 50

Mass                                                22 ± 0.25 gram

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