Lockheed F-22A Raptor – Φώτο & Βίντεο

Φωτογραφίες ενός Lockheed F-22A Raptor, του Λόκχιντ Μάρτιν/Μπόινγκ F-22 Ράπτορ είναι ένα μονοθέσιο, δικινητήριο υπερανιχνεύσιμο μαχητικό αεροσκάφος πέμπτης γενιάς που χρησιμοποιεί τεχνολογία stealth.

Πηγή: Λόκχιντ Μάρτιν F-22 Ράπτορ στη Βικιπαίδεια

The Lockheed F-22 Raptor is a fifth-generation, single-seat, twin-engine, all-weather stealth tactical fighter aircraft developed for the United States Air Force (USAF). The result of the USAF’s Advanced Tactical Fighter (ATF) program, the aircraft was designed primarily as an air superiority fighter, but also has ground attack, electronic warfare, and signal intelligence capabilities. The F-22 is the first operational aircraft to combine supercruise, supermaneuverability, stealth, and sensor fusion in a single platform.
The F-22’s development began in 1981 with the request for information (RFI) for the ATF program. The program aimed to produce a new air superiority fighter that could counter and defeat any potential adversary, including the Soviet Union’s new generation of fighters such as the Su-27 and MiG-29. Lockheed and Boeing teamed up to submit their proposal for the YF-22 prototype, which competed against the Northrop YF-23. The YF-22 was selected as the winner of the fly-off competition in 1991 and was awarded the contract to produce the F-22.
The F-22 entered service in December 2005 and achieved initial operational capability (IOC) in December 2007. The USAF originally planned to buy 750 F-22s, but the program was cut to 187 operational aircraft due to high costs, a lack of clear air-to-air missions due to delays in Russian and Chinese fighter programs, a ban on exports, and development of the more versatile F-35. The last F-22 was delivered in 2012.
The F-22 is powered by two Pratt & Whitney F119-PW-100 afterburning turbofan engines that enable it to reach speeds of over Mach 2.2 without using afterburners (supercruise). The engines also feature thrust vectoring nozzles that can direct the engine thrust up or down, giving the F-22 exceptional agility and maneuverability. The F-22 has a trapezoidal wing with a large wing area and high sweep angle, which provide high lift and low drag at supersonic speeds. The wing also incorporates leading-edge extensions (LEX) that generate vortices that enhance lift and aid in roll control.
The F-22’s stealth features include a diamond-shaped fuselage that reduces radar cross-section (RCS), radar-absorbent material (RAM) that covers most of the surface area, serrated edges and gaps that minimize radar reflections, and internal weapons bays that eliminate external stores. The F-22 also has a sophisticated avionics suite that integrates multiple sensors and systems, such as the AN/APG-77 active electronically scanned array (AESA) radar, the AN/AAR-56 infrared and ultraviolet missile launch detector (MLD), the AN/ALR-94 passive radar warning receiver (RWR), and the AN/ALE-55 fiber-optic towed decoy (FOTD). The F-22 can also communicate with other platforms through its multifunction advanced data link (MADL), which is compatible with the Link 16 network.
Το F-22 μπορεί να μεταφέρει μια ποικιλία όπλων για διαφορετικές αποστολές. Για μάχες αέρος-αέρος, μπορεί να μεταφέρει έξι πυραύλους AIM-120 AMRAAM και δύο πυραύλους AIM-9 Sidewinder εσωτερικά. Για αποστολές αέρος-εδάφους, μπορεί να μεταφέρει δύο βόμβες JDAM 1,000 lb (450 kg) ή οκτώ βόμβες SDB 250 lb (110 kg) εσωτερικά. Μπορεί επίσης να μεταφέρει εξωτερικές δεξαμενές καυσίμων ή όπλα σε τέσσερα σκληρά σημεία κάτω από τα φτερά, αλλά αυτό υποβαθμίζει την απόδοση stealth. Το F-22 διαθέτει επίσης ένα εσωτερικό περιστροφικό πυροβόλο M61A2 Vulcan 20 mm με 480 βλήματα.
The F-22 is widely regarded as the most advanced and capable fighter aircraft in the world. It has demonstrated its superiority over other fighters in numerous exercises and simulations, such as Red Flag and Northern Edge. It has also participated in several combat operations, such as Operation Inherent Resolve against ISIS in Syria and Iraq, Operation Odyssey Dawn in Libya, and Operation Enduring Freedom in Afghanistan. The F-22 is expected to remain in service until at least 2060.