a bipropellant rocket engine (rocket motor) which uses propellants that are in two different states, typically liquid and solid, which when reacted, create exhaust gases suitable for rocket propulsion.

(astronautics) A rocket engine (rocket motor) that uses a solid propellant that, when combusted, generates gases which are used for rocket propulsion. / (astronautics) A rocket that uses such an engine.

plural of rocket pack

(aviation) a wearable backpack device using rocket thrust to propel a person into the air / (aviation) a wearable backpack device that can propel a person into the air

(astronautics) a rocket engine that uses nuclear fusion reactions for propulsive force / (astronautics) a spacecraft having a fusion reactor that powers the rocket

plural of rocket launcher

(astronautics) A spacecraft having a fission reactor that powers the rocket. / (astronautics) A nuclear-pulse rocket that uses fission-based atomic bombs to supply propulsive force.

(astronautics) A rocket with a nuclear reactor aboard. / (astronautics) A rocket where a nuclear process, especially an on-board fission reactor, enables thrust to be produced.

plural of rocket scientist

A rocket that uses water as a propellant, which is forced out of the rocket by compressed gas (typically compressed air)