From the smallest gnat to the largest aircraft all things that fly obey the same aerodynamic principles. In The Simple Science of Flight Henk Tennekes investigates just how machines & creatures fly: what size wings they need how much energy is required for their journeys how they cross deserts & oceans how they take off climb & soar. Fascinated by the similarities between nature & technology Tennekes offers an introduction to flight that teaches by association. Swans & Boeings differ in numerous ways but they follow the same aerodynamic principles. Biological evolution & its technical counterpart exhibit exciting parallels. What makes some airplanes successful & others misfits? Why does the Boeing 747 endure but the Concorde now seem a fluke? Tennekes explains the science of flight through comparisons examples equations & anecdotes. The new edition of this popular book has been thoroughly revised & much expanded. Highlights of the new material include a description of the incredible performance of bar-tailed godwits (7 000 miles nonstop from Alaska to New Zealand) an analysis of the convergence of modern jetliners (from both Boeing & Airbus) a discussion of the metabolization of energy featuring Lance Armstrong a novel treatment of the aerodynamics of drag & trailing vortices & an emphasis throughout on evolution in nature & in engineering. Tennekes draws on new evidence on bird migration new wind-tunnel studies & data on new airliners. & his analysis of the relative efficiency of planes trains & automobiles is newly relevant. (On a cost-per-seat scale a 747 is more efficient than a passenger car.)