The role of drag prediction in combat aircraft design and development

摘要

This paper gives an overview of combat aircraft drag prediction in the context of the overall design and development process. Following a brief summary of the author's experience in this field, the importance of drag prediction during initial configuration design is discussed, emphasising the need for the drag aerodynam-icist to develop a good understanding of the other aerodynamic disciplines involved, as well as an appreciation of the of the total design process encompassing structural design, propulsion integration and systems installation. A brief description is given of typical simplified prediction methods used in initial design, followed by an example of drag synthesis procedures based on wind-tunnel test and analysis, illustrating the need for good understanding of test techniques and the requirements of other aerodynamic disciplines. Some future challenges are identified, requiring continual involvement in research and methods development programmes.