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42-423: The Sikorsky CH-53K King Stallion ( Sikorsky S-95 ) is a heavy transport helicopter designed and produced by Sikorsky Aircraft . The King Stallion is an evolution of the long running CH-53 series of helicopters which has been in continuous service since 1966, and features three up-rated 7,500  shp (5,590  kW ) engines, new composite rotor blades, and a wider aircraft cabin than its predecessors. It

84-500: A platoon of infantry, or transporting towed artillery or light vehicles either internally or as underslung roles. Unlike the assault helicopter they are usually not expected to land directly in a contested landing zone, but are used to reinforce and resupply landing zones taken by the initial assault wave. Examples include the unarmed versions of the Mil Mi-8, Super Puma , CH-46 Sea Knight , and NH90 . Heavy lift helicopters are

126-548: A $ 8.5 million contract for CH-53K maintenance training aids, such as the Maintenance Training Device Suite (MTDS) and Helicopter Emulation Maintenance Trainer (HEMT). The MTDS is a realistic training and evaluation environment for various avionics, electrical, and hydraulic subsystems. The HEMT is a 3D simulation of multiple scenarios, such as functional test, troubleshoot, fault isolation, removal and installation of 27 subsystems. On 24 January 2014,

168-446: A major program restructuring. Flaws included the engine re-ingesting exhaust gas, limited service life for the rotor gear boxes, late deliveries of redesigned parts, and deficiencies with the tail rotor and driveshaft. It is estimated that the delay will push back delivery of combat-ready CH-53Ks until May 2020. In 2023, an order was placed with Sikorsky Helicopters for 35 CH-53K helicopters for 2.77 billion USD, as production ramped up at

210-600: A more powerful rotor system. Sikorsky proposed the S-80 design to the Marines in 1968. The Marines considered this a good, quick solution, and funded development of a testbed helicopter. Changes on the CH-53E also included a stronger transmission and a fuselage stretched 6 feet 2 inches (1.88 m). The main rotor blades' material was changed to a titanium - fiberglass composite . A new automatic flight control system

252-465: A new digital glass cockpit with fly-by-wire controls and haptic feedback , HUMS , a new elastomeric hub system, and composite rotor blades to improve " hot and high " performance. The split torque gearbox with quill shafts started development around 2007. The gearbox assembly including rotor hub and rotating control system weighs around 11,650 lb (5,280 kg). The split torque gearbox weighs 5,270 lb (2,390 kg). For comparison,

294-558: A payload of 36,000 pounds (16,000 kg), the maximum weight on the single center point cargo hook. The first CH-53K was delivered to the USMC on 16 May 2018; at the time, 18 additional helicopters were in production, and the second was planned for delivery in early 2019. In December 2018, the CH-53K was projected to not be combat ready as expected in late 2019, due to delivery delays caused by technical flaws found in testing, which resulted in

336-503: A total of 177. For the airborne mine countermeasures role, the Navy obtained a CH-53E variant, designated MH-53E Sea Dragon , with enlarged sponsons and fuel tanks for greater fuel storage, in the 1980s. The Navy obtained 46 Sea Dragons. The USMC had planned upgrades to retain most CH-53Es, but this effort stalled. Sikorsky proposed a new model, originally designated "CH-53X"; in April 2006,

378-472: Is a Containerized Flight Training Device (CFTD) built by Lockheed Martin , Sikorsky's parent company. On 22 April 2022, Lt. General Mark R. Wise , Deputy Commandant for Aviation, declared initial operational capability for the CH-53K. In 2009, the Israeli Air Force (IAF) said it would evaluate the new variant after it flies. In August 2015, it formalized a requirement for the CH-53K, listing

420-420: Is achieved often defines the in-service date (ISD) for an associated system . Declaration of an initial operating capability may imply that the capability will be developed in the future, for example by modifications or adjustments to improve the system's performance, deployment of greater numbers of systems (perhaps of different types), or testing and training that permit wider application of the capability. Once

462-608: Is increased over the CH-53E's 73,500 lb (33,300 kg). The CH-53K will keep approximately the same footprint as the CH-53E. To this end, it has redesigned composite sponsons that cut overall width for a narrower footprint, which is better for shipboard service. In May 2018, the first CH-53K King Stallion was delivered to the USMC. The U.S. Marine Corps received its first CH-53K simulator at Marine Corps Air Station New River in Jacksonville, North Carolina on 1 May 2020. It

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504-527: Is the largest and heaviest helicopter in the U.S. military . The United States Marine Corps plans to receive 200 helicopters at a total cost of $ 25 billion. Ground Test Vehicle (GTV) testing started in April 2014; flight testing began with the maiden flight on 27 October 2015. In May 2018, the first CH-53K was delivered to the Marine Corps. On 22 April 2022, it was declared to have passed initial operational capability . Israel has also reportedly ordered

546-636: The German Air Force's CH-53G heavy lift helicopter replacement program, in which the CH-53K competed against the Boeing CH-47 Chinook . The German Federal Ministry of Defence was expected to issue an official request for information in late 2018, to award a contract in 2020, and for deliveries to begin in 2023 for an expected order of around 40 helicopters. On 29 September 2020, the German Ministry of Defense cancelled

588-763: The UH-60 Black Hawk helicopter. The CH-53K is powered by the General Electric GE38-1B engine, which was selected over the Pratt and Whitney Canada PW150 and a variant of the Rolls-Royce AE 1107C-Liberty used on the V-22 Osprey . Each of the three T408 engines is rated at 7,500 shp (5,600 kW), and gives the CH-53K the ability to fly 20 knots (37 km/h; 23 mph) faster than its CH-53E predecessor. The CH-53K features

630-671: The landing zone . This armament may be in the form of door gunners , or the modification of the helicopter with stub wings and pylons to carry missiles and rocket pods . For example, the Sikorsky S-70 , fitted with the ESSM (External Stores Support System), and the Hip E variant of the Mil Mi-8 can carry as much disposable armament as some dedicated attack helicopters . Medium transport helicopters are generally capable of moving up to

672-578: The " Schwerer Transporthubschrauber " (STH) heavy-lifting helicopter program, it having been judged to be too expensive; instead, the CH-53Gs are still to be replaced after reexamining the project. In 2022, Germany decided to procure the CH-47F Chinook instead, citing interoperability advantages with other European NATO countries—especially the Netherlands—as well as the lower unit cost compared to

714-518: The CH-53K GTV ignited its engines, spinning the rotor head without rotors attached. Low-rate production is planned to proceed from 2015 to 2017. Initial operating capability (IOC) was set to occur in 2019, with full-rate production commencing between then and 2022. The USMC intends to have eight active squadrons, one training squadron, and one reserve squadron. In April 2014, testing with blades attached began, system integration followed. Flight testing

756-565: The CH-53K passed its Critical Design Review, reading it for test production. However, the IOC fielding date was deferred to 2018. Sikorsky proposed building four pre-production aircraft for evaluation. On 4 December 2012, Sikorsky delivered the first CH-53K, a Ground Test Vehicle (GTV) airframe. Early tests included fuel system calibration and attaching test sensors across the airframe to record temperature, aerodynamic load, pressure, and vibration. Two additional static GTVs underwent structural testing at

798-471: The CH-53K, which would allow the purchase of more helicopters for the same budget. Data from Sikorsky CH-53K, GE38-1B data, and Flightglobal.com General characteristics Performance Related development Aircraft of comparable role, configuration, and era Related lists Military transport aircraft Military transport aeroplanes are defined in terms of their range capability as strategic airlift or tactical airlift to reflect

840-492: The USMC signed a $ 18.8 billion contract for 156 "CH-53K" helicopters, with deliveries to be completed by 2021. The USMC was to begin retiring CH-53Es in 2009, and needed replacements as rotorcraft reached their structural life limits in 2011–12. CH-53K flight testing was expected to begin in 2011. In August 2007, the USMC increased the order from 156 to 227. By that time, the first flight was planned for November 2011 with initial operating capability (IOC) by 2015. The CH-53K will be

882-502: The USMC's heavy lift helicopter with the MV-22 (medium lift) and UH-1Y (light lift). A 2007 RAND report on seabasing found that a higher ratio of CH-53Ks to MV-22s would reduce ship-based deployment times. In 2008, design work was well underway, along with weight reduction efforts to meet operational requirements; increased engine performance and rotor blade improvements are options to help meet requirements if needed. The rotor mast tilt

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924-400: The battle front. Military transport helicopters are used in places where the use of conventional aircraft is impossible. For example, the military transport helicopter is the primary transport asset of US Marines deploying from LHDs and LHA . The landing possibilities of helicopters are almost unlimited, and where landing is impossible, for example densely packed jungle, the ability of

966-402: The capability is fully developed, full operational capability may be declared. For example, the capability may be fielded to a limited number of users with plans to roll out to all users incrementally over a period (possibly incorporating changes along the way). The point at which the first users begin using the capability is IOC, with FOC achieved when all intended users (by agreement between

1008-419: The developer and the user) have the capability. This does not preclude additional users from obtaining the capability after FOC. Alternatively the specifics of the program may cause a contract and acquisition-defined definition that differs from the concept of available in minimally deployable form, for example IOC on a website, which does not have material production or maintenance, may have been defined as when

1050-514: The final twin-engined H-53s, and had extensive avionics upgrades for all-weather operation. In October 1967, the USMC issued a requirement for a helicopter with a lifting capacity 1.8 times that of the CH-53D, that could fit on amphibious assault ships . Before this, Sikorsky had been working on an enhancement to the CH-53D, under the company designation "S-80", featuring a third turboshaft engine and

1092-544: The firm's Stratford manufacturing plant. In January 2013, the program had an estimated cost of US$ 23.17 billion (~$ 29.9 billion in 2023) after procurement of the planned 200 CH-53Ks. In April 2013, the U.S. Navy program manager stated that work had gone well and it may become operational ahead of schedule. On 31 May 2013, the Navy awarded Sikorsky a $ 435 million (~$ 561 million in 2023) contract to deliver four prototype CH-53Ks for evaluation and mission testing; The first two prototypes focused on structural flight loads while

1134-414: The helicopter to hover allows troops to deploy by abseiling and roping . Transport helicopters are operated in assault, medium and heavy classes. Air assault helicopters are usually the smallest of the transport types, and designed to move an infantry squad or section and their equipment. Helicopters in the assault role are generally armed for self-protection both in transit and for suppression of

1176-472: The largest and most capable of the transport types, currently limited in service to the CH-53 Sea Stallion and related CH-53E Super Stallion , CH-47 Chinook , Mil Mi-26 , and Aérospatiale Super Frelon . Capable of lifting up to 80 troops and moving small Armoured fighting vehicles (usually as slung loads but also internally), these helicopters operate in the tactical transport role in much

1218-439: The manufacturing facility to fill orders. The CH-53K King Stallion is a heavy lift helicopter, being a general redesign of the preceding CH-53E, the main improvements being the new engines and cockpit layout. It has over twice the lift capacity and radius of action of the CH-53E, and a wider cargo hold to allow it to carry a Humvee internally. A new composite rotor blade system is also used, featuring technology similar to that of

1260-434: The need to break apart pallets between airlifter and helicopter. The CH-53K is to surpass the capability of its predecessor by carrying nearly 30% more than the CH-53E's external payload of 27,000 lb (12,200 kg) over the same radius of 110 nmi (204 km). The CH-53K's payload reaches a maximum of 35,000 lb (15,900 kg). The CH-53K's maximum gross weight will be 88,000 lb (39,900 kg), which

1302-448: The needs of the land forces which they most often support. These roughly correspond to the commercial flight length distinctions: Eurocontrol defines short-haul routes as shorter than 1,500 km (810 nmi), long-haul routes as longer than 4,000 km (2,200 nmi) and medium-haul between. The military glider is an unpowered tactical air transport which has been used in some campaigns to transport troops and/or equipment to

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1344-511: The same way as small fixed wing turboprop air-lifters. The lower speed, range and increased fuel consumption of helicopters are offset by their not requiring a runway. Initial operating capability Initial operating capability or initial operational capability ( IOC ) is the state achieved when a capability is available in its minimum usefully deployable form. The term is often used in government or military procurement . The United States Department of Defense chooses to use

1386-592: The term initial operational capability when referring to IOC. For a U.S. Department of Defense military acquisition , IOC includes operating the training and maintaining parts of the overall system per DOTMLPF , and is defined as: "In general, attained when some units and/or organizations in the force structure scheduled to receive a system have received it and have the ability to employ and maintain it. The specifics for any particular system IOC are defined in that system’s Capability Development Document (CDD) and Capability Production Document (CPD)." The date at which IOC

1428-507: The third and fourth validated general performance, propulsion and avionics. Major subcontractors include Aurora Flight Sciences (main rotor pylon), Exelis Aerostructures (tail rotor pylon and sponsons), GKN Aerospace (aft transition), Onboard Systems International (external cargo hook), Rockwell Collins (avionics management system), Sanmina-SCI Corporation (communications), and Spirit AeroSystems (cockpit and cabin). In October 2013, Sikorsky gave Kratos Defense & Security Solutions

1470-503: The twin-engine Mil Mi-26 's split torque gearbox weighs 8,020 lb (3,639 kg). The CH-53K has an improved external cargo handling system, survivability enhancements, and improvements to extend service life. The cabin will be 30 ft (9.14 m) long by 9 ft (2.74 m) wide by 6.5 ft (1.98 m) tall. Its cabin will be 1 ft (30 cm) wider and 15% larger, but will have new shorter composite sponsons. The CH-53K can carry two 463L master pallets , eliminating

1512-625: The type as a "very high priority" item to enable the service to perform missions only the platform is capable of. Israel's current CH-53 "Yasur" fleet is to remain operational until 2025. The CH-53K competed with the Boeing CH-47F Chinook for an order of approximately 20 helicopters to replace the CH-53 Yasur. In February 2021, the Israeli Ministry of Defense announced the CH-53K's selection. On 31 December 2021, it

1554-508: The type; other potential export customers include Japan. The Sikorsky CH-53 Sea Stallion came out of the US Marine Corps' (USMC) "Heavy Helicopter Experimental" (HH(X)) competition begun in 1962. Sikorsky 's S-65 was selected over Boeing Vertol 's modified CH-47 Chinook version. The prototype YCH-53A first flew on 14 October 1964. It was designated CH-53A Sea Stallion , delivery of production helicopters began in 1966. The CH-53A

1596-458: Was added. The vertical tail was also enlarged, with the tail rotor tilted upwards slightly to provide some lift in hover. The initial YCH-53E first flew in 1974. Following successful testing, the initial production contract was awarded in 1978, and service introduction followed in February 1981. The US Navy acquired the CH-53E in small numbers for shipboard resupply. The Marines and Navy acquired

1638-456: Was announced that Israel had signed a deal to buy 12 CH-53Ks. In August 2023, Sikorsky announced they had been awarded a contract by the US Navy for 35 helicopters at a total cost of $ 2.77 billion, including eight aircraft for Israel. Japan has reportedly shown interest in the CH-53K. In February 2018, Sikorsky signed an agreement valued at around €4 billion with Rheinmetall to team up for

1680-484: Was decreased and components shifted to ensure the center of gravity does not shift too far rearward as fuel is burned. Design requirements were frozen in 2009–10. On 22 January 2010, Sikorsky opened a $ 20 million Precision Components Technology Center in Stratford, Connecticut , for producing CH-53K parts, such as the rotating and stationary swashplates , main and tail rotor hubs, and main rotor sleeves. On 3 August 2010,

1722-784: Was equipped with two T64-GE-6 turboshaft engines, and had a maximum gross weight of 46,000 pounds (21,000 kg). Variants of the original CH-53A Sea Stallion include the RH-53A/D, HH-53B/C, CH-53D, CH-53G, and MH-53H /J/M . The RH-53A and RH-53D were used by the United States Navy for minesweeping . The CH-53D had a more powerful version of the General Electric T64 engine, used in all H-53 variants, and external fuel tanks. The US Air Force 's HH-53B/C Super Jolly Green Giant were for special operations and combat rescue. The Air Force's MH-53H/J/M Pave Low were

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1764-413: Was set to start in late 2014, each test aircraft flying approximately 500 hours over three years. The maiden flight was delayed, due to issues with the titanium quill shafts in the transmission and gear box. On 5 May 2014, General James F. Amos announced during the official rollout that it will be called the "King Stallion". On 27 October 2015, the CH-53K took its first flight. On 7 March 2018, one lifted

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