In presenting this paper an attempt has been made to outline some of the additional problems which are connected with the design and construction of rotor blades driven by jets at the tips

The complications which arise when ram or pulse jets are fitted are not discussed in detail as it is considered that these problems are also included among those which occur when pressure jets are used as the means of propulsion

This short paper will therefore be confined to a discussion on the engineering of rotor blades driven by pressure jets at the tips