Martin 262 Convoy Fighter – US Navy VTOL Turboprop from 1950

The Martin 262 Convoy Fighter was to be the cornerstone of the US Navy- this defensive fighter has propellers moving at supersonic speeds and can take off and land vertically. It was supposed to begin an era of the helicopter-like plane, but this never happened. The Search for a New Convoy FighterWorld War II showed a flaw for the US Navy- their convoy ships were extremely vulnerable to air attacks from the enemy, requiring excessive protection from warships. The answer would be developing a new type of plane that would have the power of a normal fighter interceptor but didn’t need a carrier to launch or land and a plane that could take off vertically. The Martin 262The competition was pretty fierce, but it was the Glenn Martin company that rose to the challenge. The company developed the Martin model 262, a series of three different fighters called A, B, and C, only differing in the placement of the propeller. Worst Conditions Known to ManDuring testing, Martin assumed the worst conditions during the landing of the aircraft. Pilots couldn’t easily land the aircraft back on the deck.Unique LandingMartin designed the aircraft not to land on the ship’s deck but right on the side of the middle using a special platform to catch the plane as it hovered vertically, allowing pilots to simply match the speed of the vessel.

Downfall

Martin’s obsession with options eventually became its own undoing. Not only that they showed three different models to the Navy, but they also couldn’t decide on a budget and their lack of confidence turned the Navy off. However, its biggest blow was its weight- the aircraft was estimated to weigh 16,000 pounds versus the Navy’s own estimate of 17,500 pounds. At the end of the day, the Navy went for the lighter Lockheed and Convair. 

The Martin Model 262 was an unconventional turboprop VTOL aircraft proposal submitted to the US Navy’s convoy fighter competition of 1950, which ultimately produced the Convair XFY-1 Pogo and Lockheed XFV-1 Salmon.

It was a swept-wing aircraft with triple vertical tails powered by an Allison XT-40-A-8 turboprop engine driving 16 ft contra-rotating propellers. The launch and recovery system consisted of a hinged vertical platform mounted on a merchant ship. The pilot approached the platform from the side and hovered vertically just in front of it, attaching the aircraft to the platform with a retractable nose-gear spike and landing on two small retractable wing gear.

The fighter was armed with four 20 mm cannon and was designed to protect convoy vessels from enemy air attack. In addition to the basic Model 262, Martin also presented Modifications A, B and C, the configurations of which were even more unorthodox than the main proposal.

 

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