Bell went on to design and produce several different experimental aircraft during the 1950s.

Later, experimental aircraft were built to study the effects of a simple swept wing.

Never before has an experimental aircraft been designed to fly so much faster and higher than any other plane.

Only four of these experimental aircraft were built with three entering flight testing.

This division did not undertake the testing of experimental aircraft.

On experimental aircraft, the engines are often run to their complete 2250-hour design life before overhaul.

After further trials during 1926 all the experimental aircraft were scrapped.

As part of this, several experimental military aircraft made their first flights from the airfield.

This was the first experimental aircraft in the world operating on liquid hydrogen.

Spending more than that on relatively experimental aircraft would be unwise, he said.