Production ended when the Napier aero engine was acquired by Rolls-Royce Limited in 1961.
The Eland powered various other aircraft, including the Westland Westminster helicopter, and the Canadair CL-66. It also powered two versions of the Convair CV-240 family of aircraft (the CV-540 and CC-109 Cosmopolitan).
The Fairey Rotodyne had two Eland turboshaft engines, each rated at 2800 SHP. These drove controllable pitch propellors in forward flight. To drive the rotors for vertical take-off and landing, each engine drove a compressor via a clutch (fluid coupling), and each compressor supplied air to one pair of blade tip jets.
For more information, see Wikipedia entry.
Sources of Information
-  Wikipedia - Convair CV-240 family