This textbook presents the entire process of aircraft conceptual design - from requirements definition through initial sizing, congfiguration layout, analysis, sizing and trade studies - in the same manner seen in industry aircraft design groups. Interesting and easy to read, it contains more than 900 pages of design methods, illustrations, tips, explanations and equations, and has extensive appendices with key data essential to design. For the third edition, Daniel Raymer has updated his book to reflect advances in technologies such as hypersonics, stealth and STOVL, and design methods including concurrent engineering, cost as an independent variable, and the impact of the factory of the future. With his usual easy-to-read style, he has expanded his treatments of such key areas as jet engine installation, CFD, trim analysis, CAD/CAM, propeller thrust analysis, weights estimation, cost analysis and multivariable optimization. Raymer has added, by popular demand, a step-by-step description of how a typical design is developed (with illustrations), and also describes the technical concepts behind some unusual design approaches such as tailless, canard-pusher, no-lateral-symmetry (Rutan Boomerang), wing-in-ground effect, and the hypersonic waverider. Along with the addition of metric data and equations, more than 30 new illustrations and homework examples have been added.