The F135 engine, powering the world’s most advanced fighter jet, the F-35, comes in three different variants: one for conventional takeoffs and landings, one specialized for use on aircraft carriers, and a short take-off and vertical landing (STOVL) version.
While the conventional and aircraft carrier versions share many similarities, the carrier engine is equipped with superior corrosion resistance to withstand the harsh saltwater environment on board. The STOVL engine, created in collaboration with Rolls-Royce, is a unique design. It features a 3 Bearing Swivel Module, which acts as a thrust vectoring nozzle. Coupled with a lift fan situated at the front of the aircraft, this engine enables vertical lift-off, similar to the Harrier AV-8B Jump Jets.
In addition to performance, reliability was a crucial aspect of the F135 development. To achieve this, the engine was designed with fewer parts compared to similar engines. Field-replaceable parts and maintenance can be handled with just six common tools readily available at any hardware store. The engine also includes a Health Management System that transmits real-time data to maintenance personnel on the ground. This allows them to prepare and acquire necessary parts before the aircraft even lands, minimizing downtime.
Although a repower for the F-35 has been put on hold for now, the F135 is undergoing an Engine Core Upgrade. This upgrade focuses on thermal management to address overheating issues and increasing the capacity to generate additional electricity. These updates are necessary for the ongoing Block 4 upgrade of the jet.
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