Helicopters of the Past: Unconventional Designs and Record-Breaking Feats




Introduction:

Helicopters have gone a long way since their origin, with many types and designs being created for certain uses. In this post, we will take a look at some of the distinctive and unorthodox helicopter designs from the past that have made a mark in aviation history. From the first specialised attack helicopter, to a helicopter with intermeshing rotors, to the fastest conventional helicopter, to the biggest helicopter in world history, these aircraft have established records, pushed limits, and grabbed the imagination of aviation aficionados.

Bell AH-1 Cobra: First Dedicated Attack Heli

The Bell AH-1 Cobra, debuted in 1965, was the world's first wholly purpose-built attack helicopter, equipping the US Army with remarkable close combat air power. With its sleek and beautiful appearance, the Cobra adopted many aspects from fighter planes, notably the seating configuration with the crew of two seated in series in a long but narrow cockpit with a bubble canopy. The co-pilot/gunner sat at the front, while the pilot occupied the raised rear seat.

The Cobra was swift, strong, and carried powerful weaponry in an efficient configuration. Two short wings protruded from the sides of the fuselage, housing missiles and minigun pods or cannons, with a total of 30,000 pounds of ordnance that could be carried beneath the small yet durable wings. The Cobra continues to serve the US Marine Corps over half a century later, displaying its lasting qualities and effect on current attack helicopter design.

Kaman K-Max K-1200: Strangest Super Achiever

The Kaman K-Max K-1200, termed the "strangest" helicopter because to its unusual synchropter or intermeshing rotor design, is a multimillion-dollar US-built flying aircraft that resembles a dolphin from the side. The intermeshing rotors tilt and share airspace nanoseconds apart but never contact, providing for lifting capability that much beyond that of a standard helicopter of its size.

Despite its compressed shape, the K-1200 has the astonishing capacity to hoist a freight load higher than its empty weight, weighing only 5,145 pounds but capable of taking on an extra 6,855 pounds for a maximum gross weight of 12,000 pounds. This has made it a favourite option for firefighting, search and rescue, and other heavy-lift missions, showing its unique strengths and adaptability in demanding conditions.

Kellet-Hughes XH-17: The Weirdest

The Kellet-Hughes XH-17, called "the weirdest" helicopter owing to its unique look, resembled a helicopter that crashed with a crane and flew off as one giant tangle. The XH-17 was built as a testing rig for exploring and testing the ideas of rotary-winged planes driven by jets on the rotor tips, instead of typical helicopter drive systems.

With a rotor diameter of 130 feet and a maximum payload of just over 10,000 pounds, the XH-17 was a gigantic vehicle equipped with jet engines placed to the tips of each rotor. Despite its odd look, the XH-17 proved the possibilities for employing jet-powered rotor tips in helicopter design, and its development cleared the way for subsequent developments in rotary-winged aircraft.

Westland Lynx: Fastest Helicopter

The Westland Lynx, recognised as the fastest conventional helicopter in the world, achieved the official world speed record for a helicopter flight in 1986, a record that has yet to be exceeded. The Lynx attained an average speed of slightly over 248 kilometres per hour over Somerset,


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