Tuesday, 15 February 2011

Stealth Fighter Jets - F-22 Raptor & F-35 Lightning II






F-22 Raptor

(US Air Force)
Updated: 2011-02-15 17:30
F-22 Raptor

Two US Air Force F-22 Raptor stealth jet fighters fly near Andersen Air Force Base in this handout photo dated August 4, 2010. [Photo/Agencies]

The sophisticated F-22 aerodesign, advanced flight controls, thrust vectoring, and high thrust-to-weight ratio provide the capability to outmaneuver all current and projected aircraft. The F-22 design has been extensively tested and refined aerodynamically during the development process.

The F-22's characteristics provide a synergistic effect ensuring F-22A lethality against all advanced air threats. The combination of stealth, integrated avionics and supercruise drastically shrinks surface-to-air missile engagement envelopes and minimizes enemy capabilities to track and engage the F-22. The combination of reduced observability and supercruise accentuates the advantage of surprise in a tactical environment.

The F-22 will have better reliability and maintainability than any fighter aircraft in history. Increased F-22 reliability and maintainability pays off in less manpower required to fix the aircraft and the ability to operate more efficiently.

Background

The Advanced Tactical Fighter entered the Demonstration and Validation phase in 1986. The prototype aircraft (YF-22 and YF-23) both completed their first flights in late 1990. Ultimately the YF-22 was selected as best of the two and the engineering and manufacturing development effort began in 1991 with development contracts to Lockheed/Boeing (airframe) and Pratt & Whitney (engines). EMD included extensive subsystem and system testing as well as flight testing with nine aircraft at Edwards Air Force Base, Calif. The first EMD flight was in 1997 and at the completion of its flight test life this aircraft was used for live-fire testing.

The program received approval to enter low rate initial production in 2001. Initial operational and test evaluation by the Air Force Operational Test and Evaluation Center was successfully completed in 2004. Based on maturity of design and other factors the program received approval for full rate production in 2005. Air Education and Training Command, Air Combat Command and Pacific Air Forces are the primary Air Force organizations flying the F-22. The aircraft designation was the F/A-22 for a short time before being renamed F-22A in December 2005.

General Characteristics

Primary Function: Air dominance, multi-role fighter
Contractor: Lockheed-Martin, Boeing
Power Plant: Two Pratt & Whitney F119-PW-100 turbofan engines with afterburners and two-dimensional thrust vectoring nozzles.
Thrust: 35,000-pound class (each engine)
Wingspan: 44 feet, 6 inches (13.6 meters)
Length: 62 feet, 1 inch (18.9 meters)
Height: 16 feet, 8 inches (5.1 meters)
Weight: 43,340 pounds (19,700 kilograms)
Maximum Takeoff Weight: 83,500 pounds (38,000 kilograms)
Fuel Capacity: Internal: 18,000 pounds (8,200 kilograms); with 2 external wing fuel tanks: 26,000 pounds (11,900 kilograms)
Payload: Same as armament air-to-air or air-to-ground loadouts; with or without 2 external wing fuel tanks.
Speed: Mach 2 class with supercruise capability
Range: More than 1,850 miles ferry range with 2 external wing fuel tanks (1,600 nautical miles)
Ceiling: Above 50,000 feet (15 kilometers)
Armament: One M61A2 20-millimeter cannon with 480 rounds, internal side weapon bays carriage of two AIM-9 infrared (heat seeking) air-to-air missiles and internal main weapon bays carriage of six AIM-120 radar-guided air-to-air missiles (air-to-air loadout) or two 1,000-pound GBU-32 JDAMs and two AIM-120 radar-guided air-to-air missiles (air-to-ground loadout)
Crew: One
Unit Cost: $143 million
Initial operating capability: December 2005
Inventory: Total force, 137





F-35 Lightning II

(lockheedmartin.com)
Updated: 2011-02-15 17:30
F-35 Lightning II
F-35 Lightning II [Photo/lockheedmartin.com]

The F-35 Lightning II, also known as the Joint Strike Fighter (JSF), integrates advanced very low observable stealth into a supersonic, highly agile 5th generation fighter. The capabilities built into the F-35 Lightning II provide the pilot with unprecedented situational awareness and unmatched lethality and survivability.

While each variant (F-35A, F-35B, F-35C) is uniquely designed to operate from different bases, all three variants set new standards in network-enabled mission systems, sensor fusion, supportability and maintainability.

The world's most experienced aerospace industry leaders (Lockheed Martin, Northrop Grumman, BAE Systems and the Fighter Engine Team—Pratt & Whitney and GE Rolls-Royce) combine sophisticated manufacturing, engineering and technological capabilities to develop the F-35 Lightning II. This, along with global partnerships, has been an integral part of the JSF Program. Setting the stage for reliability and maintainability, the F-35's built-in sustainment establishes new levels of operational readiness and helps meet the needs across the spectrum of military operations.

With its host of next-generation technologies and unprecedented capabilities, the F-35 is the world's most advanced multirole fighter.

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