A method suitable for dealing with extended longitudinal manoeuvres is outlined, based on a step-by-step integration process It is shown how the necessary calculation is carried out on a digital computer, using a programme consisting of two parts A general part is applicable to any manoeuvre, and a special part idealises the pilot's action in performing the particular manoeuvre under consideration Using two illustrative examples, it is demonstrated how the method can be used to deal with problems which usually come under the heading of performance, but nevertheless involve handling qualities Some numerical results aid in the illustration

The CHAIRMAN, in introducing the Author, said that Dr Morley had been for 16 years on the scientific staff of the Engine Department of the Royal Aircraft Establishment and, at the end of the war, was Deputy Head of the Gas Dynamics Division which subsequently became the Supersonics Division Three years after that he was senior lecturer of aircraft propulsion at Cranfield In his present position as Forward Projects Engineer for the Napier Company he was engaged on technical investigations into developments in aeronautics

The recent years have seen a tremendous increase in the importance of the helicopter both as a defence aircraft, for anti mine, anti submarine and assault purposes and as a civil transport between busy centres, and it has been overwhelmingly successful in a multitude of special duties from rescue work to crop spraying, some impossible with fixed wing aircraft The wider application of the helicopter in these many roles has directed increased attention towards the enhanced engine performance possible with the gas turbine, and to the more difficult problems of coupling the greater potential output of this form of engine with the inherent safety features of the aircraft