An induction sail is one of seven types of hypothetical space drives suggested by Marc Millis of the Breakthrough Propulsion Physics Program at NASA's Glenn Research Center (see Millis drives).

 

The radiation pressure on one side of the induction sail would be increased by some yet undiscovered means, and the pressure on the other side lowered. The spacecraft would move toward the low-pressure region.

 

Compare with the diode sail and differential sail.