Britain's Gift To The Soviets | When Rolls Royce Gave The Jet Engine To Russia, And They Copied It

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284.1 هزار بار بازدید - ماه قبل - In 1951, a Mikoyan-Gurevich MiG-15
In 1951, a Mikoyan-Gurevich MiG-15 was shot down over Korea's west coast and plummeted into the Yellow Sea.
The jet was pulled from the shallow water by US and South Korean forces and transported by a British frigate for study.
At a US Air Force base in Dayton, Ohio, the plane is poured over. One of the first discoveries of this incredible aircraft comes when the engine is inspected. Expecting to find a hybrid of Russian and
German jet technology, the teams studying the captured prize receive a shock. The plane
is powered by what appears to be a Rolls-Royce Neen II, designed in England.
The Mikoyan-Gurevich MiG-15 (Russian: Микоян-Гуревич МиГ-15; USAF/DoD designation: Type 14; NATO reporting name: Fagot) is a jet fighter aircraft developed by Mikoyan-Gurevich for the Soviet Union. The MiG-15 was one of the first successful jet fighters to incorporate swept wings to achieve high transonic speeds. In aerial combat during the Korean War, it outclassed straight-winged jet day fighters, which were largely relegated to ground-attack roles. In response to the MiG-15's appearance and in order to counter it, the United States Air Force rushed the North American F-86 Sabre to Korea.
When refined into the more advanced MiG-17, the basic design would again surprise the West when it proved effective against supersonic fighters such as the Republic F-105 Thunderchief and McDonnell Douglas F-4 Phantom II in the Vietnam War of the 1960s.
The MiG-15 is believed to be one of the most produced jet aircraft, with more than 13,000 manufactured. The MiG-15 remains in service with the Korean People's Army Air Force as an advanced trainer.
The first turbojet fighter developed by Mikoyan-Gurevich OKB was the Mikoyan-Gurevich MiG-9, which appeared in the years immediately after World War II. It used a pair of reverse-engineered German BMW 003 engines. The MiG-9 was a troublesome design that suffered from weak, unreliable engines and control problems. Categorized as a first-generation jet fighter, it was designed with the straight-style wings common to piston-engined fighters.

In 1946 Soviet engine technology was far behind the West's. The Germans had been unable to develop airworthy turbojets with thrust over 1,130 kilograms-force (11,100 N; 2,500 lbf) capable of running for more than a few hours at the time of the surrender in May 1945, which limited the performance of immediate Soviet postwar jet aircraft designs. The Soviet aviation minister Mikhail Khrunichev and aircraft designer A. S. Yakovlev suggested to Premier Joseph Stalin that the USSR buy the reliable, fully developed Rolls-Royce Nene (having been alerted to the fact that the U.K. Labour government wanted to improve post-war UK-Russia foreign relations) for the purpose of copying them in a minimum of time. Stalin is said to have replied, "What fool will sell us his secrets?"
MiG-15 General characteristics:
Crew: 1
Length: 10.102 m (33 ft 2 in)
Wingspan: 10.085 m (33 ft 1 in)
Height: 3.7 m (12 ft 2 in)
Wing area: 20.6 m2 (222 sq ft)
Airfoil: root: TsAGI S-10; tip: TsAGI SR-3
Empty weight: 3,681 kg (8,115 lb)
Gross weight: 5,044 kg (11,120 lb)
Max takeoff weight: 6,106 kg (13,461 lb) with 2x600 L (160 US gal; 130 imp gal) drop-tanks
Fuel capacity: 1,420 L (380 US gal; 310 imp gal) internal
Powerplant: 1 × Klimov VK-1 centrifugal-flow turbojet, 26.5 kN (5,950 lbf) thrust
Performance

Maximum speed: 1,076 km/h (669 mph, 581 kn) at sea level
1,107 km/h (688 mph; 598 kn) / M0.9 at 3,000 m (9,800 ft)
Maximum speed: Mach 0.87 at sea level
Cruise speed: 850 km/h (530 mph, 460 kn) Mach 0.69
Ferry range: 2,520 km (1,570 mi, 1,360 nmi) at 12,000 m (39,000 ft) with 2x600 L (160 US gal; 130 imp gal) drop-tanks
Service ceiling: 15,500 m (50,900 ft)
Rate of climb: 51.2 m/s (10,080 ft/min)
Wing loading: 296.4 kg/m2 (60.7 lb/sq ft)
Thrust/weight: 0.54
Armament
Guns:
2 × 23 mm Nudelman-Rikhter NR-23 autocannon in the lower left fuselage (80 rounds per gun, 160 rounds total)
1 × 37 mm Nudelman N-37 autocannon in the lower right fuselage (40 rounds total)
Hardpoints: 2 , with provisions to carry combinations of:
Bombs: 100 kg (220 lb) bombs
Other: drop tanks or unguided rockets

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ماه قبل در تاریخ 1403/04/02 منتشر شده است.
284,193 بـار بازدید شده
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