Martin T4M
The Martin T4M was an American torpedo bomber of the 1920s. A development by the Glenn L. Martin Company of their earlier Martin T3M, and like it a single-engined biplane, the T4M served as the standard torpedo bomber aboard the aircraft carriers of the United States Navy through much of the 1930s.
Development and design
The Martin Model 74 was designed and developed by the Glenn L. Martin Company as a result of testing of the experimental radial engined developments of the Martin T3M, the XT3M-3 and XT3M-4. The resulting prototype, designated XT4M-1, first flew in April 1927, and was purchased by the U.S. Navy for further evaluation.
The XT4M-1 had new single-bay fabric covered metal wings of shorter span than the wooden wings of the T3M. It was powered by a Pratt & Whitney Hornet, (as used by the XT3M-3), and was fitted with a revised rudder. The fuselage was similar to that of the T3M-2, and like the earlier aircraft, could be fitted with either a wheeled undercarriage or floats.
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