Tuesday, May 10, 2011

The Lockheed Martin F-35 Lightning II

| Tuesday, May 10, 2011 | 0 comments


The Lockheed Martin F-35 Lightning II, also known as the Joint Strike Fighter (JSF) is being developed by Lockheed Martin Aeronautics Company for the US Air Force, Navy and Marine Corps and the UK Royal Navy. The Lockheed Martin F-35 Lightning II is a family of single-seat, single-engine, fifth generation multirole fighters under development to perform ground attack, reconnaissance, and air defense missions with stealth capability. The F-35 has three main models; one is a conventional takeoff and landing variant, the second is a short take off and vertical-landing variant, and the third is a carrier-based variant.

George Standridge of Lockheed Martin has said that the F-35 will be four times more effective than legacy fighters in air-to-air combat, eight times more effective than legacy fighters in air-to-ground combat, and three times more effective than legacy fighters in reconnaissance and suppression of air defenses – while having better range and requiring less logistics support and having around the same procurement costs (if development costs are ignored) as legacy fighters. Further, the design goals call for the F-35 to be the premier strike aircraft through 2040 and be second only to the F-22 in air superiority.



The stealthy, supersonic multirole fighter was designated the F-35 Lightning II in July 2006. The JSF is being built in three variants: a conventional take-off and landing aircraft (CTOL) for the US Air Force; a carrier variant (CV) for the US Navy; and a short take-off and vertical landing (STOVL) aircraft for the US Marine Corps and the Royal Navy. A 70%-90% commonality is required for all variants.

The F-35's main engine is the Pratt & Whitney F135. The General Electric/Rolls-Royce F136 is being developed as an alternative engine. The F135/F136 engines are not designed to supercruise in the F-35. The STOVL versions of both power plants use the Rolls-Royce LiftSystem, patented by Lockheed Martin and built by Rolls-Royce. This system is more like the Russian Yak-141 and German VJ 101D/E than the preceding generation of STOVL designs, such as the Harrier Jump Jet in which all of the lifting air went through the main fan of the Rolls-Royce Pegasus engine.


The F-35A includes a GAU-22/A, a four-barrel version of the GAU-12 Equalizer 25 mm cannon. The cannon will be mounted internally with 180 rounds in the F-35A and fitted as an external pod with 220 rounds in the F-35B and F-35C. The gun pod for the B and C variants will have stealth features. This pod could be used for different equipment in the future, such as EW, reconnaissance equipment, or possibly a rearward facing radar.


Spesification:

Crew: 1
Length: 51.4 ft (15.67 m)
Wingspan: 35 ft (10.7 m)
Height: 14.2 ft (4.33 m)
Wing area: 460 ft² (42.7 m²)
Empty weight: 29,300 lb (13,300 kg)
Loaded weight: 49,540 lb (22,470 kg)
Max takeoff weight: 70,000 lb (31,800 kg)
Powerplant: 1 × Pratt & Whitney F135 afterburning turbofan
Dry thrust: 28,000 lbf (125 kN)
Thrust with afterburner: 43,000 lbf (191 kN)
Internal fuel capacity: 18,480 lb (8,382 kg)
Maximum speed: Mach 1.6+ (1,200 mph, 1,930 km/h)
Range: 1,200 nmi (2,220 km) on internal fuel
Combat radius: over 590 nmi (1,090 km) on internal fuel
Service ceiling: 60,000 ft (18,288 m)
Rate of climb: classified (not publicly available)
Wing loading: 91.4 lb/ft² (446 kg/m²)
Thrust/weight: With full fuel: 0.87 With 50% fuel: 1.07
g-Limits: 9 g

Armament

  1. Guns: 1 × General Dynamics GAU-22/A Equalizer 25 mm (0.984 in) 4-barreled gatling cannon, internally mounted with 180 rounds
  2. Hardpoints: 6 × external pylons on wings with a capacity of 15,000 lb (6,800 kg) and 2 internal bays with 2 pylons each for a total weapons payload of 18,000 lb (8,100 kg) and provisions to carry combinations of:
    • Air-to-air missiles: AIM-120 AMRAAM, AIM-132 ASRAAM, AIM-9X Sidewinder, IRIS-T, JDRADM (after 2020)
    • Air-to-surface missiles: AGM-154 JSOW, AGM-158 JASSM, Brimstone missile, Joint Air-to-Ground Missile
    • Anti-ship missiles: JSM
    • Bombs: Mark 84, Mark 83 and Mark 82 GP bombs, Mk.20 Rockeye II cluster bomb, Wind Corrected Munitions Dispenser capable, Paveway-series laser-guided bombs, Small Diameter Bomb (SDB), JDAM-series, B61 nuclear bomb

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