CH-53 Super Stallion Helicopter
The Marine Corps, in a search for a new heavy lift helicopter, placed its initial order for the CH-53A Sea Stallion in August 1962. At that time, it was the largest helicopter design available in the U.S. Navy BIS trials were completed in October 1966 and included 132 day and night LPH carrier landings. HMH-463, MCAF Santa Ana, completed its fleet indoctrination program with the Sea Stallion two weeks later.
The CH-53's primary mission is to move cargo and equipment. It has a secondary role of transferring troops ashore in an amphibious assault. CH-53Ds, with improved engines and increased power, are also used to recover downed aircraft, sweep mined areas and, if necessary, tow distressed ships.
The Sea Stallion's cargo/troop compartment measures 30 feet long by 7'/2 feet wide and 6'/2 feet high and has a rear door and loading ramp. To facilitate cargo handling, a remotely controlled winch is located at the forward end of the compartment. There is space for a jeep with trailer, a 105mm howitzer or a Hawk missile system. If passengers are carried, 38 combat-equipped troops or 24 litter patients can be accommodated.
Twin-turbine engines turn a single, six-bladed main rotor which has an automatic bladefolding system. Engine air separators have been incorporated on many models to reduce power loss in a sand/dust environment. An automatic flight control system lessens pilot fatigue on long missions. The CH-53 is capable of emergency water landing and takeoff.
In recent years, one of the major thrusts in the helicopter industry has been to produce more aesthetically pleasing designs. One exception to this has been the CH-53 Sea Stallion which, in its new CH-53E Super Stallion model and the MH-53E mine countermeasures version, has regressed significantly with various appurtenances and surfaces at different odd angles.
However, beauty is in the eye of the beholder, and the Marine combat officer who needs to move a 16-ton external load over rugged terrain to achieve his objective would find the newest Marine helicopter, hovering overhead as it picks up the load, beautiful!
The CH-53E is an obvious derivative from its CH-53 series forebears. However, the major changes necessary to provide the largest lift capability in the free world have resulted in its being given a new company model number, S-80 in lieu of S-65, for non-U.S. military sales. In many ways, like Topsy, it just grew from the earlier models. Recognizing the need for increased lift capability but not to the extent considered necessary by the Army in its HLH (heavy lift helicopter) program, the Marines, the Naval Air Systems Command and Sikorsky combined forces to develop the CH-53 from a 10-ton to a 16-plus-ton lifter.
Starting off with two concepts, a third engine and a seventh main rotor blade (all with increased diameter), a ground test rig was first built in the early 1970s. Two YCH-53E prototypes followed successful completion of these tests, the first making its initial hovering and limited maneuvering flight on 1 March 1974.
In addition to the engine and rotor changes and generally increased size, the most obvious change was in the tail configuration: a low-mounted symmetrical horizontal tail was surmounted by a larger vertical tail and tail rotor tilted from the vertical so that the tail rotor provided some lift in hover while counteracting the main rotor torque.
Not as obvious were the many internal improvements, particularly a new automatic flight control system. By August 1974, the first YCH-53E had shown that it could lift 17.8 tons to a 50-foot wheel height and, without an external load, could reach 170 knots at a 56,000-pound gross weight.
The capabilities demonstrated were such that, in spite of a number of setbacks in the subsequent development test program, NPEs and other milestones were achieved, and the first two preproduction aircraft and a static test article were ordered, the first flying in December 1975. By this time, the tail had been redesigned to include a single, high-mounted, strut-braced horizontal surface opposite the rotor on the 20-degree canted vertical surface, the inboard section being perpendicular to the vertical with a bend to horizontal at the strut juncture.
By the spring of 1977 testing, including shipboard trials on Iwo Jima, was well along and full production was subsequently ordered. The Dual Digital Automatic Flight Control System had proven its worth--technologically one of the newest systems in the Super Stallion and one that gives it exceptionally good flying qualities in all flight modes.
The first production aircraft flew in December 1980, being delivered to Marine squadron HMH-464 in mid-1981. Further Marine deliveries have continued and Navy squadron HM-12 took delivery of its first Navy CH-53E in November 1982 for vertical onboard delivery (VOD) operations. Modification of the first Navy production CH-53E to the MH-53E configuration led to the MH version being the Navy's principal mine countermeasures helicopter beginning in 1986. Its capability to lift (including retrieval of all Marine and most Navy carrier tactical aircraft, as well as itself), to transport heavy internal loads at reasonable speeds for extended ranges, and to tow MCM gear for long durations, makes the Super Stallion a mainstay of Naval Aviation for many years to come.
Technical data is for CH-53 Super Stallion Helicopter HH-53C
CH-53 Super Stallion Helicopter Nation: USA
Manufacturer: Sikorsky Aircraft
Type: Assault Transport Helicopter
CH-53 Super Stallion Helicopter Year: 1968
Engine: 2 General Electric T64-GE-7 turboshaft, 3,435 shp
Rotor Diameter: 72 ft 3 in
Fuselage Length: 67 ft 2 in
Overall Length: 88 ft 3 in
CH-53 Super Stallion Helicopter Height: 24 ft 11 in
Empty Weight: 23,257 lb
CH-53 Super Stallion Helicopter Max Takeoff Weight: 37,466 lb
Max Speed: 196 mph
CH-53 Super Stallion Helicopter Ceiling: 20,400 ft
Range: 540 miles
CH-53 Super Stallion Helicopter Crew: 3
Load/Armament: 38 troops
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CH-53 Super Stallion Helicopter