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Momentus-X1 is a 16U CubeSat built as a demonstrator for Momentus' water based propulsion system.

The mission is a technology demonstration of Momentus' Vigoride water based microwave electrothermal propulsion for orbit transfer vehicles and satellites. The purpose of El Camino Real will be to flight demonstrate the core propulsion technology. The company flies their high performance X-Band (10 GHz) microwave electrothermal thruster with enough water propellant to be able to run the thruster long enough to fully characterize its performance in space with dozens of stop start cycles and then safely de-orbit the vehicle.

Alternate Names

  • MomentusX1
  • 44408
  • El Camino Real

Facts in Brief

Launch Date: 2019-07-05
Launch Vehicle: Soyuz-2.1b/Fregat
Launch Site: Vostochny Cosmodrome, Russia

Funding Agency

  • Unknown (United States)


  • Technology Applications

Additional Information

Questions and comments about this spacecraft can be directed to: Coordinated Request and User Support Office

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