

How Demcon deflates the space junk problem
Demcon high-tech systems is developing a passive de-orbiter: a lightweight, inflatable sail that increases drag at the end of a mission and allows satellites to decelerate in a controlled manner until they burn up in the atmosphere.
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![Figure 1. Reluctance actuator with a permanent magnet placed parallel to the mover. [a] The current in the coil is negative and the flux of the coil (black) and the permanent magnet (red) are parallel in the stator. [b] The current is positive and the fluxes are anti-parallel, leading to a suppression of the magnetic saturation.](/.img/animated_true&extract_84_0_553_553&f_jpeg&s_1600x1600/dam/hightechsystems/public/showcases/Boosting-the-actuator-efficiency-of-reluctance-actuators-with-permanent-magnets/1-b-Reluctance-actuator-with-permanent-magnet.jpg)
![Figure 1. Reluctance actuator with a permanent magnet placed parallel to the mover. [a] The current in the coil is negative and the flux of the coil (black) and the permanent magnet (red) are parallel in the stator. [b] The current is positive and the fluxes are anti-parallel, leading to a suppression of the magnetic saturation.](/.img/animated_true&extract_0_96_722_361&f_jpeg&s_1600x800/dam/hightechsystems/public/showcases/Boosting-the-actuator-efficiency-of-reluctance-actuators-with-permanent-magnets/1-b-Reluctance-actuator-with-permanent-magnet.jpg)



























