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The paper gives the reason for the choice of type and size of engine most suitable for civil air transport and the design philosophy of the Eland. The controls are described with reference to the safeguard system. The suitability of the Eland for replacement of piston engines in existing aircraft is discussed in relation to the conversion of a Convair 340. A comparison is given of the cruising performance of the Convair 340 with the two types of power plant. Reference is made to other applications of the Eland and an outline is given of the future Eland development.

The purpose of this report is to acquaint the reader with some of the developments in offshore oil drilling in the Gulf of Mexico. A brief evolutionary resume is given. Some of the current problems in the design of mobile drilling units are presented, and a discussion of the economics of offshore exploration is put forth. References have been noted and summarized so that the interested reader may pursue the subject further.

The military aviation services pay a phenomenal price due to turbine engine stall. Several of the major factors which comprise a substantial portion of the total price are presented. Included are weapon system development time, operational limitations, field maintenance problems, overhaul costs and accident rates. Also presented, in a general fashion, are several technical approaches to the solution of turbine engine stall. Fundamental research and orderly development of basic engine components, power control systems, and airframe and installation factors are discussed. Emphasis is placed on the need for tighter control of production tolerances and the requirement for united efforts in the integration of components into a complete system.