Lockheed Martin X-35B

Lockheed Martin X-35

КраїніСша
РольКонцепт-демонстратор літака
Перший політ24 жовтня 2000 року
Побудований2

The Lockheed Martin Х-35 — концептуальний демонстраційний літак (CDA), розроблений компанією Lockheed Martin для програми Joint Strike Fighter. X-35 був оголошений переможцем над конкуруючим Boeing X-32, а розроблена озброєна версія надійшла у виробництво на початку 21-го століття як F-35 Lightning II.

Джерело: Lockheed Martin X-35 у Вікіпедії

Lockheed Martin X-35B Joint Strike Fighter Walk Around
ФотографівJohn Heck, Vladimir Yakubov
ЛокалізацієюЦентр NASM Удвар-Хейзі, Шантійї
Фото90
Зачекайте, шукаємо для вас Lockheed Martin X-35...
X-35 Walk Around
ФотографWayne Fowler
ЛокалізацієюUnkbow
Фото29

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General Characteristics and Role

The Lockheed Martin X-35B was the Short Takeoff and Vertical Landing (STOVL) demonstrator variant in the Joint Strike Fighter (JSF) program competition against the Boeing X-32. Its primary role was to prove the feasibility of a high-performance, supersonic, stealth fighter capable of operating from aircraft carriers, amphibious assault ships, and forward operating bases without conventional runways. The X-35B successfully demonstrated the necessary technological leaps, including supersonic flight, STOVL capability, and in-flight refueling. Its success, particularly its unique lift system, was key to Lockheed Martin winning the JSF contract, leading to the development of the F-35 Lightning II.

Property Typical Value (X-35B Demonstrator)
Роль Experimental STOVL Fighter Demonstrator
National Origin США
Виробник Lockheed Martin, Northrop Grumman, BAE Systems
First Flight (STOVL) 24 June 2001
команда 1 Pilot
Довжина 15.47 m (50 ft 9 in)
Розмах крил 10.05 m (33 ft 0 in)
Максимальна швидкість Supersonic (Achieved Mach 1.05 during testing)
Configuration Single-engine, stealth, STOVL

Lift System and Powerplant

  • Engine: 1 x Pratt & Whitney JSF-119-PW-100 (a derivative of the F119).
  • Key Innovation (STOVL): The X-35B utilized a unique three-bearing swivel duct nozzle (3BSN) for downward thrust and a Rolls-Royce LiftFan located behind the cockpit.
  • LiftFan Principle: The LiftFan is driven by a shaft from the main engine, drawing cold air from above the fuselage and directing it downward, providing a massive increase in vertical lift thrust without relying solely on exhaust gas (a less hot and more efficient method).
  • Thrust (Vertical): The combined vertical thrust from the main nozzle and the LiftFan exceeded 40,000 lbf (180 kN).
  • Achievement: The X-35B famously completed the “Three-in-One Flight” by taking off in a short distance, going supersonic, and landing vertically in a single flight, a first for any aircraft.

Program Outcome and Legacy

  • Competition Victory: The X-35 design was declared the winner of the JSF competition in 2001, primarily due to the simpler, more reliable, and lower-risk STOVL system compared to the Boeing X-32.
  • F-35 Lineage: The X-35B directly led to the development of the F-35B Lightning II, the production STOVL variant currently used by the U.S. Marine Corps and Royal Air Force/Royal Navy.
  • Influence: The X-35 program successfully combined stealth, supersonic performance, and STOVL capability in a single platform, demonstrating a significant leap in fighter technology.
  • Preservation: The X-35B demonstrator is preserved and displayed at the National Air and Space Museum’s Steven F. Udvar-Hazy Center in Chantilly, Virginia.

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