UTC to Provide Power Transmissions for King Stallion

By R&WI Staff | May 13, 2018
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Sikorsky CH-53K King Stallion UTC Transmission

Sikorsky CH-53K King Stallion. Photo courtesy of UTC Aerospace Systems

UTC Aerospace Systems will be providing key power transmission components for the Sikorsky CH-53K King Stallion. It will be providing the power transmission system for the tail rotor including drive shafts, couplings and bearing assemblies.

The drive shaft system is constructed of titanium and high-strength aluminum to reduce corrosion and decrease weight. The entire drive shaft system is also designed with a high degree of damage and ballistic tolerance to increase aircraft survivability in combat environments.


UTC provides the King Stallion’s disconnect mechanism, which decouples the drive shaft in the tail. It assists in allowing the tail to fold automatically when the pilot presses a button in the cockpit. By folding its main rotor, the CH-53K is shipboard-compatible and capable of operating on aircraft carriers and amphibious assault ships. It can also fold into a compact size to enable storage and maintenance to be performed either on deck or in the limited space of shipboard hangars.

The King Stallion is on pace to achieve initial operational capability in 2019 and deployment in 2023-2024.

The helicopter will support the U.S. Marine Corps in missions such as humanitarian aid, troop transport and casualty evacuation. It will also support special operations forces as well as combat search and rescue.

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