Navy Set to Install Hybrid Electric Drives in Destroyer Fleet Staring Next Year - USNI News: Next year the Navy will begin installing a hybrid electric drive (HED) system on 34 Flight IIA Arleigh Burke guided missile destroyers in a bid to lower the fuel costs of the ships, Naval Sea Systems Command (NAVSEA) told USNI News in a statement.
The system, which will marry an electric motor to the ships’ main reduction gear to drive the ship at low speeds, promises to save the service thousands of barrels of fuel in over a ship’s deployment.
Earlier this year L-3 — the company was awarded contract in 2012 to develop the technology — delivered two pre-production HED systems for testing ahead of the first installation in the Burkes in the fourth quarter of Fiscal Year 2016 after research and development testing is done, NAVSEA said.
The almost $50 million program, to date, follows the lead of the U.K. Royal Navy which used a similar scheme to drive its Type 23 Duke-class frigates.
While the Burke’s four LM-2500 gas turbines are highly efficient at top speeds, the efficiency decreases at lower speeds, wasting more fuel.
Utilizing a preexisting quill drive in the main reduction gear, the HED motor is capable of turning the drive shaft and propelling the ship at speeds less than 13 kts. That speed range would work well with missions like ballistic missile defense or maritime security operations.
