**7.1 Military aircraft design consideration**

All modern military aircraft are designed to perform multiple missions. This is inherent in the design of such aircraft, for example, the A400M military transport aircraft is designated as a tactical airlifter with strategic capabilities and can also be configured to perform long-range cargo and troop transport, medical evacuation, aerial refueling and electronic surveillance missions. *Military aircraft* is capable of operating from semiprepared runways under varied climatic and environmental conditions [1, 13, 28].

*Military aircraft design requirement* is driven by operational capabilities derived from threat perception and defence preparedness strategy of a country, whereas commercial aircraft design and development are driven by the market forces. A comparative study of the design *considerations for civil and military* aircraft is shown in **Table 1**.
