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Sikorsky S-70

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An Australian S-70A-9 in 2005
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An Australian S-70A-9 in 2005
The Sikorsky S-70 is a medium-lift military helicopter family manufactured by Sikorsky.

The S-70 is used by over 20 nations. It is in service with the armed forces of Argentina, Australia, Austria, Bahrain, Brazil, Brunei, the People's Republic of China, Colombia, Egypt, Israel, Japan, Jordan, Malaysia, Mexico, Morocco, the Philippines, Saudi Arabia, South Korea, Republic of China (Taiwan), Thailand, and Turkey, but is best known as the primary utility and assault helicopter of the United States Army. The S-70 family was developed to meet a US Army requirement for a replacement of the venerable UH-1 Iroquois family of utility medium-lift helicopters in 1972. Its US military designation is H-60.

The S-70 can perform a wide array of missions, including air cavalry, electronic warfare, and aeromedical evacuation: several versions are even used to transport the President of the United States, which while carrying the President is known as Marine One. In air assault operations it can move a squad of 11 combat troops and equipment or carry the 105 mm M102 howitzer, thirty rounds of ammunition, and a six-man crew. Alternatively, it can carry 2,600 lb (1,170 kg) of cargo or sling load 9,000 lb (4,050 kg) of cargo. The S-70 is equipped with advanced avionics and electronics, such as the Global Positioning System.

Three prototypes were constructed, the first (YUH-60A) flying in October 1974, and evaluated against a rival (YUH-61A) Boeing-Vertol design. The S-70 was selected for production and entered service as UH-60A Black Hawk with the US Army in 1979. In the late 1980s the model was upgraded to the UH-60L (first production aircraft 89-29179) which featured more power and lift with the upgrade to the -701C model of the GE engines.

A newer model being engineered, which will extend the service life of both UH-60A's and UH-60L's well into the 2020s, features still more power and lift and state of the art electronic instrumentation, flight controls and aircraft navigation control.

The United States Navy received the first navalised SH-60B Sea Hawk in 1983 and the SH-60F in 1988.

The HH-60G Pave Hawk is a highly modified version of the S-70 primarily designed to recover downed aircrew or other isolated personnel during war and equipped with a rescue hoist with a 250 ft (75 m) cable that has a 600 lb (270 kg) lift capability, and a retractable in-flight refueling probe. The United States Air Force received the MH-60G Pave Hawk in 1982.

The United States Coast Guard received the HH-60J Jayhawk in 1992. It is similar to the HH-60G Pave Hawk, but navalised.

The S-70A Firehawk is a version of the S-70 designed for firefighting, rescue, medical evacuation, and external lift of bulky cargo and equipment. The Oregon National Guard was the first military organization in the world to add the Firehawk to its inventory; the Los Angeles County Fire Department was the first municipal organization.

The Army also flies medical evacuation models which are configured as rotary winged medical suites. They also used the S-70 for special operations by the 160th Special Operations Aviation Regiment ("Night Stalkers") known as the MH-60K at Fort Campbell, Kentucky.

The Maple Hawk was a variant offered by Sikorsky to the Canadian Forces during the tender to replace the military's search and rescue helicopters.

The unit cost varies with the version. For example, the unit cost of the Army's UH-60L Black Hawk is $5.9 million while the unit cost of the Air Force MH-60G Pave Hawk is $10.2 million.

Dimensions of a UH-60 helicopter
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Dimensions of a UH-60 helicopter

H-60

S-70

The corporate name for the H-60/S-70 family is the S-70 Black Hawk

Derivatives

 


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