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Sikorsky is an American helicopter manufacturer.
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The Caribe Doman D-10B is a Puerto Rican eight-seater general-purpose helicopter refined from the Sikorsky R-6 helicopter and first flown in 1958. The Doman D-10B is powered by a de-rated Lycoming THIO-720-A1A turbo-super-charged eight-cylinder horizontally-opposed air-cooled engine providing a top speed of 167 kmh and a range of 1205 km.
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Helicopter is the name given to a flying machine which can raise itself vertically by means of horizontally revolving propellers or air-screws - known as a rotor. The advantages of such a machine for war puposes, enabling it to rise and land on the deck of a warship with ease, hover in the air for scouting purposes, fly low and slow for attacking ground targets and to land in small areas are so great that since at least the Great War many attempts were made to build a successful helicopter, and the first known attempt was by Leonardo da Vinci in the early 16th century.
In January 1921 Etienne Ochmichen tested a helicopter in France which offered a part solution to the problem. His helicopter with a 25 hp engine lifted 584 lbs. No attempt was made howver to provide a method for balancing or moving the forwards. Both the French and British governments experimented with helicopters in 1920 and 1921, but the problem of stability in the air alluded them. The problem faced by the early helicopter designers being that they were constrained by a need for the aircraft to be able to glide safely to ground in the event of engine failure. This problem was overcome by the discovery that disconnecting the rotor from the engine in the event of engine failure, the rotor then continuing to turn for a while and provide some degree of lift to enable an emergency landing to be made.
The first successful helicopter, the VS-300, was created in 1939 by the Russian-born American engineer Igor Sikorsky.
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The Sikorsky S-61R HH-3E, (Jolly Green Giant), is a twin-engine, heavy-lift helicopter. It is used for search and recovery of personnel and aerospace hardware in support of global air and space operations. It is also used for combat and special operations. The HH-3E helicopter is a modified version of the CH-3 transport helicopter developed for aircrew rescue missions deep into enemy-held territory during the Vietnam War.
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The Sikorsky MH-53E (exported as the S-80M) is an American Navy mine-countermeasure variant of the Sikorsky S-80 heavy helicopter, first flown in 1983 entering service in 1986. The MH-53E was designed to tow a hydrofoil sled carrying mine detection and neutralising equipment and is fitted with additional fuel tanks in the hold.
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The Sikorsky MH-60G (Pave Hawk) is a twin-engine medium-lift helicopter based on the UH-60 and used for infiltration, exfiltration and resupply of special operations forces in day, night or marginal weather conditions. It can also be used for combat search and rescue missions. The MH-60G is powered by two T700-GE-701C Turboshaft engines and carries fuel for four hours flying.
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The Sikorsky RAH-66 Comanche is an American reconnaissance and attack helicopter. The first flight of the Comanche took place on the 4th of January 1996. The Comanche is designed for armed reconnaissance missions, and can locate and classify threats, recognise and identify targets and digitally transmit the information to the battlefield commander in near real-time, select the optimum force deployment and co-ordinate the attack. The Comanche is equipped with a stowable three-barrel 20 millimetre Gatling gun mounted on a Giat turret under the nose of the helicopter. The Comanche carries its missile weapons internally and has a weapons bay on each side of the fuselage. The missiles are mounted on the weapon bay doors which open sideways. The missiles fire within three seconds of the bay doors opening. Missiles which fit the internal weapon bay include the Sura D 81 mm rocket, Euromissile Hot II, AIM-92 Stinger, Oerlikon Snora 81 mm Rocket, Starstreak, TOW II, Hydra 70 rocket, Matra Bae Dynamics Mistral, the Army Counter Air Weapon System, and the Longbow Hellfire missile. The number of missiles on each door mounting varies according to the size of the missile system, for example each door will hold three Hellfire or six Stinger missiles. The helicopter can be reconfigured with optional stub wings fitted with multiple weapon pylons which carry an additional four Hellfire or eight Stinger missiles.
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The Westland Sea King is a British naval helicopter. Development started in the late 1950s under licence of the Sikorsky S-61 helicopter. Westland initially developed the Sea King as an antisubmarine warfare helicopter (or HAS, Helicopter Anti-Submarine) for the UK Royal Navy.
Sea King is also operational as a search and rescue (SAR) helicopter and as an airborne early warning (AEW) helicopter. The helicopter can carry four torpedoes: either Alliant Techsystems Mark 46, the A244S from Whitehead SpA or the Sting Ray torpedo from Marconi Electronic Systems. The helicopter can also be armed with four Mark 11 depth charges. The helicopter can carry two anti-ship missiles, either Sea Eagle or AM39 Exocet. Sea Eagle is carried by British and Indian Navy Sea Kings. The AM39 Exocet anti-ship missile by Aerospatiale is carried by the Pakistan Navy
Sea Kings.
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The Sikorsky Aircraft Corporation, a subsidiary of United Technologies Corporation, is an American company involved in the design and manufacture of advanced helicopters for commercial, industrial and military uses.
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The Sikorsky Bolshoi was the first four engined aircraft. It could carry eight passengers. Its first flight was in 1913.
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The Probert Encyclopaedia was designed, edited and programed by
Matt and Leela Probert
©1993 - 2009 The Probert Encyclopaedia
Southampton, United Kingdom
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