Crucially, the XP-86 was not able to meet the required top speed of 600 mph (970 km/h); North American had to quickly devise a radical change that could leapfrog its rivals. The North American F-86 Sabre was the first American aircraft to take advantage of flight research data seized from the German aerodynamicists at the end of World War II. These data showed that a thin, swept wing could greatly reduce drag and delay compressibility problems that had bedeviled fighters such as the Lockheed P-38 Lightning when approaching the speed of sound. By 1944, German engineers and designers had established the benefits of swept wings based on experimental designs dating back to 1940. A study of the data showed that a swept wing would solve their speed problem, while a slat on the wing's leading edge that extended at low speeds would enhance low-speed stability.
The Sabre's swept wings and jet engine produced a flying experience that was very different from the propeller-driven fighters of the time. The transition from props to jets was not without accidents and incidents even for experienced fighter pilots. Early on in the jet age, some US manufacturers instituted safety and transition programs where experienced test and production pilots toured operational fighter squadrons to provide instruction and demonstrations designed to lower the accident rate.
Many of the American pilots were experienced World War II veterans, while the North Koreans and the Chinese lacked combat experience, thus accounting for much of the F-86's success. However, United Nations pilots suspected many of the MiG-15s were being flown by experienced Soviet pilots who also had combat experience in World War II. Former Communist sources now acknowledge Soviet pilots initially flew the majority of MiG-15s that fought in Korea, and dispute that more MiG-15s than F-86s were shot down in air combat. Later in the war, North Korean and Chinese pilots increased their participation as combat flyers. The North Koreans and their allies periodically contested air superiority in MiG Alley, an area near the mouth of the Yalu River (the boundary between Korea and China) over which the most intense air-to-air combat took place. Although the F-86A could be safely flown through Mach 1, the F-86E's all-moving tailplane greatly improved maneuverability at high speeds. The MiG-15 could not safely exceed Mach 0.92, an important disadvantage in near-sonic air combat. Far greater emphasis had been given to the training, aggressiveness, and experience of the F-86 pilots. American Sabre pilots were trained at Nellis, where the casualty rate of their training was so high, they were told, "If you ever see the flag at full staff, take a picture." Despite rules of engagement to the contrary, F-86 units frequently initiated combat over MiG bases in the Manchurian "sanctuary".
The needs of combat operations balanced against the need to maintain an adequate force structure in Western Europe led to the conversion of the 51st Fighter-Interceptor Wing from the F-80 to the F-86 in December 1951. Two fighter-bomber wings, the 8th and 18th, converted to the F-86F in the spring of 1953. No. 2 Squadron, South African Air Force (SAAF) also distinguished itself flying F-86s in Korea as part of the 18 FBW.
The old but nimble MiG-17 had become such a serious threat against the Republic F-105 Thunderchief over North Vietnam that the USAF created project "Feather Duster" to test which tactics supersonic American fighters could use against fighters such as the MiG-17. ANG F-86H units proved to be an ideal stand-in for the Soviet jets. One pilot remarked, "In any envelope except nose down and full throttle", either the F-100 or F-105 was inferior to the F-86H in a dogfight.
An U.S. F-16 Fighting Falcon flies towards Rimini, Italy to join with the Italian air force in a training mission. U.S. Air Forces from the 510th Fighter Squadron, Aviano Air Base, Italy and Italian Air Forces from the 83rd Combat Search and Rescue Squadron, Rimini, Italy, participated in a 4-day training mission from Feb. 5 to Feb. 8, 2001. The mission involved U.S. F-16 aircrews locating and authenticating survivors and coordinate pickup with Italian rescue crews. F-16s were also tasked with escorting helicopters to protect them from air and ground threats. This is the first ever tasking of a full-time combat search and rescue mission for F-16s from the 510th Fighter Squadron. (U.S. Air Force photo by Tech. Sgt. Dave Ahlschwede)
The LLVM Project is a collection of modular and reusable compiler and toolchain technologies. Despite its name, LLVM has little to do with traditional virtual machines. The name "LLVM" itself is not an acronym; it is the full name of the project. 2b1af7f3a8