The CH-53K will use the General Electric GE38-1B engine. Progress was being made in weight reduction efforts to meet operational requirements.

executiveclassdating com-52

The contract includes a full-fidelity Maintenance Training Device Suite (MTDS) and a Helicopter Emulation Maintenance Trainer (HEMT) for the Marine Corps.

The full-fidelity MTDS provides a true-to-life environment for training and evaluating the maintainers of multiple subsystems on the CH-53K platform.

The US Marine Corps had been planning to upgrade most of its CH-53Es to keep them in service, but this plan stalled.

Sikorsky then proposed a new version, originally the "CH-53X", and in April 2006 the USMC signed a contract for 156 aircraft as the "CH-53K" The CH-53K is a general redesign of the CH-53E.

The Sikorsky CH-53K King Stallion is a large, heavy-lift cargo helicopter currently being developed by Sikorsky Aircraft for the United States Marine Corps (USMC).

The design features three 7,500 shp (5,590 k W) engines, new composite rotor blades, and a wider aircraft cabin than previous CH-53 variants. The USMC plans to receive 200 helicopters at a total cost of billion.

Two additional static ground test articles underwent structural testing at the company's main manufacturing plant in Stratford, Connecticut.

Sikorsky says its first two flight-test vehicles will examine structural flight loads while the third and fourth prototypes will concentrate on validating the CH-53K’s general performance, propulsion system and avionics.

The main improvements are new engines and cockpit layout.