Models 123, 139 and 166
Series "Martin Bombers"
the MB's during the 1920's, the Martin B-10
series set the standard for land-based bombers
for a decade - during which "Martin Bomber"
described a whole generation of aircraft
types. Its design marked the first successful
military application of the new airframe
technology of the 1930's - streamlined monocoque
fuselage, variable-pitch propellers, and
thick metal wings with lift-enhancing flaps,
integral fuel tanks, and retractable landing
served in every bombardment group in the
Air Corps during the 1930's. As fast as
contemporary pursuit planes, they proved
nearly unstoppable in Army maneuvers.