Vol. 2 No. 25 … The American Jet Plane and What Makes It Fly ……. Cover : Two Props And A Jet ….. Flying staggered echelon with two sister ships from Bell Aircraft, the jet-propelled P-59 Airacomet fighter-trainer (bottom) shows her lines alongside those of the P-39 Airacobra (top) and the P-63 Kingcobra (middle). What makes the “jet job” fly is told on pages 2, 3, and 4.