A locomotive booster for steam locomotives is a small supplementary two-cylinder steam engine back-gear-connected to the trailing truck axle on the locomotive...

A booster is a rocket (or rocket engine) used either in the first stage of a multistage launch vehicle or in parallel with longer-burning sustainer rockets...

methalox. SpaceX's super-heavy-lift Starship uses Raptor engines in its Super Heavy booster and in the Starship second stage. Starship missions include...

V2 booster. About forty two minutes before flight, propellant load of the booster begins. At the T – 19:40 mark, engine chill begins on the booster. This...

in which it is used Booster dose, or booster shot, in medicine, a vaccination given after a previous vaccination Booster engine, extra cylinders on a...

develop new expendable boosters based around the F-1 engine design. These include the Saturn-Shuttle, and the Pyrios booster (see below) in 2013. As...

pre-flight modifications. A 33-engine static-fire was conducted on Booster 11 on Orbital Launch Mount A on April 5. Booster 11's hot-staging ring was installed...

A Falcon 9 first-stage booster is a reusable rocket booster used on the Falcon 9 and Falcon Heavy orbital launch vehicles manufactured by SpaceX. The manufacture...

verification] (the booster had been upgraded for the second flight test) and delaying the vent of liquid oxygen (LOX) to after Starship engine cutoff (SECO)...

Vulcan booster engines, thrust structure and first stage avionics, which could be detached as a module from the propellant tanks after booster engine cutoff;...