About MH-60L
In 1972, S-70 presented the S-70 for the United States Army's Auxiliary Tactical Transport Aircraft System (UTTAS) competition. The army identified the prototype as Yuh-60a and chose Black Hawk as the winner of the program in 1976, after the flight contest with Boeing Vertol Yuh-61.
The UH-60A, named after the Indian war leader Black Hawk, was put into service with the US army in 1979 to replace Bell UH-1 Iroquois as the tactical transport helicopter of the army. This was followed by the deportation of Black Hawk's electronic warfare and special operations variants. Improved UH-60L and UH-60M auxiliary program variants have also been developed. Modified versions have also been developed for US Navy, Air Force and Coast Guard. In addition to the use of the US Army, the UH-60 family was exported to several countries. Kara Şahinler served in the war during the clashes in Panama, Grenada. Iraq, Somalia, Balkans, Afghanistan and other regions in the Middle East.
After entering the service, helicopter was changed for new tasks and roles, including mines and medical evacuation. A EH-60 variant was developed to run an electronic war, and Special Operations Aviation developed the MH-60 variant to support its missions.
Due to the weight increases caused by the addition of task equipment and other changes, the Army ordered the UH-60L developed in 1987. The new model included all changes in the UH-60A fleet as standard design features. The UH-60L also had more power and lifting capability with T700-GE-701C engines and an improved transmission. The external lifting capacity increased by 1,000 lb (450 kg) to 9,000 lb (4.100 kg). The UH-60L also included SH-60B's automatic flight control system (AFCS) for better flight control with stronger engines. ] The production of the L model began in 1989.
The development of the next developed variant, UH-60M, was approved in 2001 to extend the service life of the UH-60 design to the 2020s. The UH-60M includes upgraded T700-GE-701D engines, improved rotor wings and state-of-the-art electronic instrumentation, flight controls and aircraft navigation control. After approved the first low-rate production of the new variant of the US Department of Defense, production started in 2006, the first of 22 new UH-60m was delivered in July 2006. After the first operational assessment, the army approved a full -rate production for 1,227 helicopters in December 2007 and a five -year contract. Until March 2009, 100 UH-60m helicopters were delivered to the army. In November 2014, the US Army ordered 102 aircraft from various H-60 types worth $ 1.3 billion.
Following an operation in May 2011, it turned out that 160. Soar uses a secret version of modified UH-60, which allowed him to escape from Pakistan radar. The analysis of the tail section, the only remaining part of the aircraft during the operation, revealed extra wings and other noise reduction measures in the tail rotor, which made the tool much quieter than traditional UH-60s. The aircraft seemed to contain features such as high -tech materials, hard angles and flat surfaces found in hidden jets. The low observable versions of Kara Şahin were examined until the mid -1970s.
In September 2012, Sikorsky was awarded a war -tempered platform show (CTPD) to further improve Black Hawk's durability and survival. The company will develop new technologies such as zero vibration system, adaptable flight control laws, advanced fire management, a more durable main rotor, full -spectrum collision and damage resistant aircraft body; Then they will transfer them to the helicopter. The improvements in Black Hawk will continue until the Future Vertical Lift program is ready to change it.
In December 2014, the 101st air download division began to test the new supply equipment called Enhanged Speed Bag System (ESBS). The soldiers in the field, which required fast supply, were tied to speed bags, to bags full of aerial furniture from a UH-60. However, all systems were special with bags that were not made to protect the items from impacts, so they would be damaged when they hit the ground until half of the air thrown from the air. ESBS, which started in 2011, tried to standardize the air supply method and keep up to 90 percent of the materials intact. The system contains the Linear brake and spendable speed line and multi -purpose cargo bag; When the bag is opened, the brake applies friction to the rope and slows down the bag on a honeycomb. ESBS not only protects the materials falling from the helicopter, but also to limit the exposure to the exposure by allowing Kara Şahin to fly higher than the ground, to fly up to 100 feet (30 m) up from 10 feet (30 m) and travel 20 sea miles (23 miles/h 37 km/h). Each bag can weigh 125-200 lb (57-91 kg) and can be placed up to six times at once, falling by 40-50 fit (12-15 m/s) per second. Since consumables can be delivered more accurately and the system can be automatically released on its own, ESBS can provide autonomous supply from unmanned helicopters.
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