Book excerpt: "Based on pre-war research and captured German wartime technology, a number of French jet, ramjet and rocket-powered aircraft reached at least prototype form. Vertical take-off, variable geometry wings and even flying boat concepts were among some of the most radical aircraft designs, studies and projects ever produced anywhere in the world. Driven by the need to equip its air forces, compete in export markets and catch-up with its international competitors, French companies gave free reign to their designers to come up with radical and unconventional airctaft."--Jacket.