The engine was designed to suit a wide range of military and commercial helicopter designs.

In 1952 Westland decided on three helicopter designs for possible development:

The Hughes Model 269 was the first successful helicopter design.

The later saw some use on post-war helicopter designs.

Bell submitted the D-262, a modification of the D-255, but still a conventional helicopter design.

Mickie then and there decided that if the opportunity arose he would team up with Raoul on future helicopter design.

This article deals with powered aircraft such as airplanes and helicopter designs.

The 204 was a giant step forward in helicopter design, being one of the first to be powered by a turboshaft.

Young's private experiments with helicopter design had mostly involved small scale models.

It was founded in 1946, initially as a helicopter design and manufacturing company.