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NASA's Experimental Spacecrafts

<< 2/12 < > An artist’s concept of a space based vehicle using the Propulsive Small Expendable Deployer System (ProSEDS) to generate its thrust to maintain orbit without using a propellant. ProSEDS will obtain thrust as the current flowing through the tether experiences a drag force due to interaction with the Earth’s magnetic field. Drag force is coupled mechanically to the stage via the tether, thus lowering the stage’s orbital altitude.

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