Modern aircraft design is an important field that involved integration of new technologies to improve the aircraft systems with advanced configurations that leads to environmental friendly and cost effective aviation. New design technique is essential to address issues such as carbon footprint reduction, lower noise pollution and improved passenger comfort as well as contributing to national security. This group engaged in both aircraft conceptual design and air vehicle system design. Our work in this field covers all flying vehicles including civil and military aircraft, helicopters and unmanned aerial systems (UAS).