the wright model b was an early pusher biplane designed by the wright brothers in the united states in 1910. it was the first of their designs to be built in quantity. unlike the model a, it featured a true elevator carried at the tail rather than at the front. it was the last wright model to have an open-frame tail. the model b was a dedicated two-seater with the pilot and a passenger sitting side-by-side on the leading edge of the lower wing.