The delta wing's a wing planform in the form of a triangle, named after the Greek uppercase delta which's a triangle (Δ). Conception of this wing and its name have been suggested in the 17th century by Polish inventor Kazimierz Siemienowicz. Its use in the so called "tailless delta", for example without the horizontal tailplane, was pioneered especially by Alexander Lippisch in Germany prior to WWII, although none of his designs saw widespread service. After the war he moved to the United… (More on Delta-wing)