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The F-35 was the product of the Joint Strike Fighter (JSF) program, which was the merger of various combat aircraft programs from the 1980s and 1990s. One progenitor program was the Defense Advanced Research Projects Agency (DARPA) Advanced Short Take-Off/Vertical Landing (ASTOVL) which ran from 1983 to 1994; ASTOVL aimed to develop a Harrier jump jet replacement for the U.S. Marine Corps ...
The F-35 Lightning II uses the Rolls-Royce LiftSystem, in which 29,000 hp [14] [15] [16] is diverted forward through a driveshaft from the engine's low-pressure (LP) turbine via a clutch [17] and bevel-gearbox to a vertically mounted, contra-rotating lift fan located forward of the main engine.
On 7 July 2006, the U.S. Air Force, the lead service for the aircraft, officially announced the name of the F-35: Lightning II, in honor of Lockheed's World War II-era twin-propeller Lockheed P-38 Lightning for the United States Army Air Forces and the Cold War-era jet, the English Electric Lightning for the Royal Air Force. [22] [a]
Rolls-Royce LiftSystem. Instead of using separate lift engines, like the Yakovlev Yak-38, or rotating nozzles for engine bypass air, like the Harrier, the "LiftSystem" has a shaft-driven LiftFan, designed by Lockheed Martin and developed by Rolls-Royce, [3] and a thrust vectoring nozzle for the engine exhaust that provides lift and can also withstand afterburning temperatures in conventional ...
Lockheed's F-35B Lightning II. ... However, Lockheed's F-35 program was plagued by payment headwinds brought on by the government contracting process, causing the company's shares to slide 5% ...
The Pratt & Whitney F135 is an afterburning turbofan developed for the Lockheed Martin F-35 Lightning II, a single-engine strike fighter.It has two variants; a Conventional Take-Off and Landing variant used in the F-35A and F-35C, and a two-cycle Short Take-Off Vertical Landing variant used in the F-35B that includes a forward lift fan. [1]
The disadvantage of a rotary launcher is a slow release of stores. The rotary launcher of the B-1 for example requires seven seconds until the next store is rotated into release position. [1] An example of the concept is the Common Strategic Rotary Launcher, which was introduced in the 1980s on the B-52 and B-1B to carry the AGM-69 and AGM-86. [2]
There are a number of differences between the X-35 and F-35, which was designed to be an operational weapon system. The forward fuselage was lengthened by 5 inches (13 cm) to make room for mission avionics, while the horizontal stabilizers were correspondingly moved 2 inches (5.1 cm) aft to retain balance and control.