by Ray Widerhold, edited by Bob Underwood, this instructional publication, aimed at radio control modelers, discusses what makes an airplane fly, characteristics of different aircraft, airfoils, aerodynamics, the interaction of flight forces, engine care and operation, fuel systems, propellers, and radio control equipment.

Softbound, 8½" x 11", 122 pages. Illustrated with numerous line drawings. Condition as new, except for very slight staining on spine.