As a result it is a very compact, cylindrical engine, allowing variation in compression ratio of the engine while running.

The museum has a number of these rare compact portable engines that powered fairground rides and organs.

Spock caught it, then found the control stick for the compact engine mounted at the raft's stern.

Turner was bent intently over the controls, and a steady hum emanated from the compact electric engines.

At that time, however, there were no viable high-output, compact engines to use for a new fighter.

To generate the increased power with a more compact engine for short periods of time, an engine requires an afterburner.

The resultant motion was stronger and narrower allowing a more compact engine.

For Stanzani that meant a compact engine and an all-composite chassis.

Simple design with few moving parts, giving a compact engine with low maintenance costs and reduced frictional losses.

The configuration, along with a compact engine, allowed the scooter its trademark step-through design.