The Osprey looks like a conventional airplane, with two large propeller engines at the ends of its wings.
He noticed how loud their propeller engines were over the beautiful San Francisco Bay.
One of the models uses a propeller engine while the other uses a small micro jet engine.
The Beriev Be-112 is a proposed amphibian plane with two propeller engines, projected to carry 27 passengers.
Maybe you can beat a sword into a ploughshare, but try 'beating' a propeller engine into a jet engine!
You have to discard the propeller engine and go back to the drawing board.
The engine selection was an attempt to couple the high-speed capability of the jet engine with the endurance offered by the propeller engine.
However, because they accelerate a large mass of air, propeller engines, such as turboprops, can be very efficient.
A larger follow-on version with a small propeller engine started as the DFS 194.
It was a seaplane, an aircraft that landed in the sea, not on an airstrip, powered by 4 propeller engines.