Spacecraft rocket engines come in a variety of forms and use a variety of fuels, but most rely on chemical reactions to blast propellants out of a nozzle, with the reaction force driving the ...

Two months after we removed the bow thruster of a 150-meter roro ship, our men once again mobilized to Algeciras, Spain to reinstall the unit. By performing both operations underwater, the thruster ...

Imperial College is developing a rocket thruster called the Iridium Catalysed Electrolysis CubeSat Thruster (ICE-Cube Thruster) that is so small that it can only be fabricated using techniques ...

Hydrex divers reinstalled the bow thruster of a 170-meter container ship during its stop in Rotterdam. By performing the operation underwater, the thruster could be reinstalled without making costly ...

Choosing an orbit for a satellite always comes with trade-offs. Very low Earth orbit (VLEO), between 100–450 km (62–280 miles), has distinct advantages. Remote-sensing cameras can take better pictures ...

A form of electric propulsion known as Hall thrusters — a type of ion thruster — may actually pack more bang for the buck than expected. Hall thrusters have conventionally been used to adjust the ...