main engine

Chief thrust source

The main engine is the primary source of propulsion in a ship, aircraft, or spacecraft—distinguished from auxiliary engines that power secondary systems.

In rocketry, the main engine provides thrust during the primary phase of flight: The main engine cut off two minutes after launch.

On ships, it drives the propeller that moves the vessel forward.

Related

internal combustion · combustion · fuel injection · horsepower · crankshaft · pistons · boiler · exhaust · fuel · ship · vessel · room · starboard · throttle · power · steam power · steam · roar

Categories
Opposites
primary vs. auxiliary propulsion

main engineAPU

Non-propulsion energy source

booster rocket · thruster · outboard motor · retrorocket

propulsion vs. braking/resistance

main enginebraking system

Equipment for slowing vehicles

retrorocket · drag chute · airbrake · anchor · sea anchor

Family

main, engine, mainly, mains, engines, engined, engineering, engineer, engineers

Familiarity
Top 200,000
Profile
Known to kids · Used worldwide · Timeless · Concrete · Everyday, not technical · Rated G