It sounds much more like an aero engine to me.

The company went on to produce marine and aero engines.

Some might say the slow drone of an aero engine.

The sound of the heavy aero engines was now deepening by the moment.

It is equally strong in major sub-areas such as aero engines.

It may be a matter of designing jeans, an aero engine or a financial instrument.

There was also a serious shortage of advanced aero engines in Germany during the late 1930s.

Birkigt's solution to building aero engines was ahead of its time.

The drone of the approaching aero engines is quite distinct now.

The museum possesses a number of aero engines located throughout the halls.

It continued to maintain aero engines, however, and began supporting telecommunications equipment as well.

As aero engine sales proved slow, the company extended the license deal to include local production of cars from 1934.

It was the first production sleeve valve aero engine.

This was achieved by setting up an aero engine which, when started, created the necessary draught to clear one side of the derrick.

I can get a man who's used to aero engines, too-most of their photographers are ground engineers as well.

You will have to know something, or be prepared to find out something, about designing aero engines, no easy task.

Rolls-Royce design and make the finest aero engines to be found anywhere, so we have the skills in this country.

The company provided training in the design and construction of airframes and aero engines.

Development and production of Wolseley aero engines was stopped in September 1936.

We stopped and I heard aero engines.

We were, however, still struggling to find a means to carry on the Wolseley aero engine, although hope was gradually dying.

The parent company as it now exists was formed in the late 1960's by a merging of several aero engine manufacturers.

Despite initial reluctance they agreed, and during 1915 developed the company's first aero engine, the twelve-cylinder Eagle.

"Our existing aero engines continue to maintain their reputation for unparalleled reliability.

In 1942, the two-stage Merlin 60 aero engine became available for reconnaissance aircraft.