Abstract
In this paper the authors present information to show that the Diesel or fuel-injection engine in some of its modified forms is well adapted to the requirements of airplane and airship propulsion. They believe that its first and most important commercial application will be in relatively large units on large aircraft and that increased fuel economy, both as to weight and cost, will be an important factor in the progress of commercial air transportation. They consider that the greatly reduced fire hazard will be an important factor in the development of quantity air transport of passengers and that the absence of radio interference will greatly simplify the problems of navigation and communication. The potential advantages of two-stroke cycle operation will be realized in the Diesel engine. In large airplanes from one to three engines of large size will be used, and these will be mounted and enclosed so as to allow of attendance during flight. Such engines will be fluid-cooled, either by liquid circulation or evaporation. The service reliability of the Diesel, they believe, will exceed that of the carbureted, air-cooled engines inaccessibly mounted, and the problems of weight and cost are less serious than are generally supposed, and will soon be solved commercially.
