They are all turboprops—each with two engines in which a gas turbine, as in a jet, drives propellers.
|gas turbine |
An internal-combustion engine consisting of an air compressor, combustion chamber, and turbine wheel that is turned by the expanding products of combustion. The four major types of gas turbine engines are the turboprop, turbojet, turbofan, and turboshaft. See more at turbojet.