The development of a modern aviation engine poses many technical and industrial problems. An aviation engine must have a high mass power, a small footprint, be robust and enduring and present both construction characteristics that will make it as simple as possible its mass production and maintenance during its use.

The problem thus posed in general terms will be solved by numerous tests and researches. This work will focus on:

• The choice of materials, their resistance, their ease of use;
• Fuels and lubricants;
• The drawing of the different organs;
• Fatigue coefficients due to employment schemes;
• The improvement of the yield, in particular by the study of the cycle of combustion;
• Study of manufacturing processes and standardization, etc., etc.

These researches call for a very deep knowledge of physics, chemistry, mechanics, they require a long specialization and can be entrusted only to highly qualified and highly professional technicians who bring to these studies the enthusiasm and willingness to apply their personal contribution to aeronautical progress.

Although the SOCIÉTÉ NATIONALE DE CONSTRUCTION DE MOTEURS has addressed all the characteristic points required for the development of the modern and powerful aircraft engine, some studies have particularly attracted its attention because it is part of an area still imperfectly explored; Those are: