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The Martin JRM Mars is a large, four-engined cargo transport flying boat designed and built by the Martin Company for the United States Navy during World War II. It was the largest Allied flying boat to enter production, although only seven were built.
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 .
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 ...
JRM-3 Marshall Mars burning near Honolulu, Hawaii 5 April Martin JRM-3 Mars flying boat, BuNo 76822 named "Marshall Mars", destroyed by fire near Honolulu, Hawaiian Islands – force landed in Keehi Lagoon, Oahu, with engine fire. Crew were rescued after which aircraft exploded.
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.
Despite being largely overshadowed, limited use of the type continued with some operators, such as in the case of the Shin Meiwa US-1A and the Martin JRM Mars. In the 21st century, flying boats maintain a few niche uses, such as dropping water on forest fires, air transport around archipelagos, and access to undeveloped areas. Many modern ...
The mystery of Mars's interior has been revealed thanks to marsquakes. Using data compiled by NASA's InSight mission that has detected hundreds of marsquakes since landing on the red planet in ...
Although these two planes went into service with the Navy, the Constitution design ultimately proved underpowered and too large for practical airline use at the time. Although the Martin JRM Mars flying boat had a slightly longer wingspan, the Constitution remains the largest fixed-wing aircraft type ever operated by the U.S. Navy.