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The Martin JRM Mars is a large, ... Model 170 prototype long-range patrol flying boat powered by four Wright R-3350-8 piston engines, one built, converted to XPB2M-1R.
Martin JRM Mars: 23 Jun 1942: Flying boat: 7: 39.04 yards (35.70 meters) 66.71 yards (61.00 meters) 73.62 tons: 14.76 tons: Heaviest until the Junkers 390, Largest serial production flying boat Latécoère 631: 4 Nov 1942: Flying boat: 11: 47.57 yards (43.50 meters) 62.77 yards (57.40 meters) 70.27 tons: Pax: 46 Longest until the Convair B-36 ...
Martin 170A JRM Mars; Martin 170B JRM-2, JRM-3; Martin 170C 165000 lb four-engine commercial flying boat; Martin 171 long-range, high-speed patrol bomber, class VPB;
The Mars was converted by the Navy into a transport aircraft designated the XPB2M-1R. Satisfied with the performance, 20 of the modified JRM-1 Mars were ordered. The first of the five production Mars flying boats entered service ferrying cargo to Hawaii and the Pacific Islands on 23 January 1944. [50]
To test the PBM's layout, Martin built a three-eighths scale flying model, the Martin 162A Tadpole Clipper with a crew of one and powered by a single 120 hp (89 kW) Chevrolet engine driving two airscrews via v-belts; this was flown in December 1937. [3] [4] This was followed by an initial production order for 21 PBM-1 aircraft on 28 December ...
The Martin 193 was a design for a giant cargo transport seaplane that was conceived in 1942 as part of the "Sky Freighter" concept for colossal flying boats that could carry large loads of troops and freight across the Atlantic Ocean in response to the sinking of Allied merchant ships by U-boats.
AB – Flying boat; AX – Amphibian; B – Free balloon; C – Dirigible; D – Kite balloon; This second system was abandoned in May 1917 without immediate replacement; until March 1922, the navy used manufacturers' model designations.
The Martin M-130 was a commercial flying boat designed and built in 1935 by the Glenn L. Martin Company in Baltimore, Maryland, for Pan American Airways. Three were built: the China Clipper , the Philippine Clipper and the Hawaii Clipper .