The Largest Security-Cleared Career Network for Defense and Intelligence Jobs - JOIN NOW

Military


Pulqui II IAe-33

The Pulqui II was a fighter aircraft that pioneered the use of swept wings and flew at high subsonic speeds. This aircraft, considered one of the top three fighters of the moment next to Mig 15 Russian and F-86 American, was equipped with a turbine Rolls Royce NENE II of 2,267 kg of thrust that allowed him to reach a maximum speed of 1050 km / h, a service ceiling of 11,600 meters and a operating endurance of 2 hours 20 minutes.

In 1947, this project was proposed by Professor Kurt Tank (a bit of reach the Argentina) to then-President general Juan Domingo Perón. One of Kurt Tank's projects at Focke-Wulf was designing the Ta-183. Information on the Ta-183 design obtained by the Russians at the end of World War II greatly influenced the design of the Russian Mig-15 jet fighter. The Pulqui-II, a derivation of the Ta-183 design flown in Argentina after World War II, had been built by former Focke-Wulf employees who had fled to Argentina. On 27 June 1950, the IA-33 Pulqui II, a second Argentine jet prototype, made its maiden flight [pulqui is a is aweet and scentles local liquor].

In 1946 Doctor Kurt Tank, who was chief designer during the war for the firm of Focke Wulf, offered of his own free will to work for the Soviets. He was turned down by General Kutsevalov and General Lukin on the grounds that he had been a member of the Nazi party. What ensued was a comic-opera effort to kidnap Tank involving the Dictator's son Vassily Stalin, and the then Deputy Chief of the KGB Ivan Serov. Added to this duo, the main task of which was to pursue the exploitation of remaining German aviation talent, was the same General Lukin who had a notorious reputation among Germans for the pillaging and deportation of their aviation industry and technicians in the previous year. Notably, serious efforts to improve voluntary cooperation were lacking. Tokaev, the senior Soviet technical advisor on aviation matters in Berlin, by his admission, discouraged a number of potential collaborators by his honest portrayal of the reality of their service.

The upshot of the story is that Tokaev defected and Kurt Tank eventually designed jet aircraft for the Peron government in Argentina. He worked for the Industria Aeronáutica Militar, developing the Pulqui I, the first South American jet plane. Tank brought to the country, the microfilmed drawings of the TA-183 project, which was in full swing by the German Focke-Wulf factory, at the end of WWII. The TA-183 had been designed by the engineer Hans Multhopp under Kurt Tank, and scale models of the same were extensively tested in wind tunnels and propelled rocket. Basically, it was a fighter aircraft with wings swept, agile and maneuverable, to fly on the edge of the sound barrier, with an armament of 8% of the total weight. It should also operate on tracks with little preparation with which was essential to a landing gear resistant, takeoffs and landings short (STOL) and easy maintenance operations.

As it was not available to German manufactured products, a Rolls Royce turbine was mounted for the propulsion of aircraft. German specialists not felt very happy with this solution, as compared to axial turbines installed in Germany, the engine (Nene II) was outdated and also much more expensive. But there was no other choice and had to dip to what could be achieved. Designers in Córdoba the safety of flight was first and foremost. Necessary tests of flight mechanics built a model glider in scale 1:1 with about 50 test flights were conducted. In the wind tunnel tests were made to determine the aerodynamic properties.

After two years of planning and construction, the first prototype of Pulqui II entered the testing phase. The Air Force, in an effort to stress the national character of the project, appointed his Chief of test, the Argentine officer pilots for the first test Captain Edmundo Osvaldo "skewer" Weiss.

On June 16, 1950 Captain Edmundo Osvaldo Weiss sat in the cockpit and after a final review of the controls and receipt of instructions, accelerates the Nene II to soar with excitement and expectation of those who watched him. This first flight lasted 28 minutes, and Weiss executed basic moves applicable to all prototype, in permanent radio contact with Kurt Tank. Experienced in jet aircraft, the pilot landed cleanly but with power. On the descent of the machine, amid the general enthusiasm, Weiss said that the aircraft was manoeuvrable, it climbed well, that was fast and easy to use. In mid-July 1950, the second pilot was a German, Otto Behrens, former head of air test of Rechlin (Mecklenburg) unit.

While initial problems in the construction of the Pulqui II were eliminated, the pulqui reached a speed of 1,040 km/h in horizontal flight, and a range of 2,000 km and a ceiling 14,600 m. Military experts took the view that the Pulqui, whose newest prototype, was Meanwhile, gunship with four 20 mm cannons, could compete and beat most modern jet fighters British and American. Anyway, the Pulqui had a striking resemblance to the more recent Soviet model, the MIG-15.

It has been common to erroneously attribute the Soviet MiG-15 to a design by Kurt Tank, who had been chief designer for Focke-Wulf during WWII. In 1945, levels of Frocke-Wulf to the jet fighter Ta-183, which were not built in Germany, had fallen into the hands of the Red Army together with some technicians. Despite that failed attempt to recruit at Professor Tank for construction in the Soviet Union, the aircraft entered series production soon and found their massive implementation in the war of Korea.

Although the fuselage arrangement bears a superficial similarity to Tank's later Pulqui II aircraft. The wing planform is decidedly different. Further, Tank himself went through a straight-lving configuration in 1947 before producing his Argentine swept-wing prototype in 1950. In fact, the Soviets may have understood theoretical aspects of transonic flight some three years before the West. The apparent similarity between the U.S. F-86 Sabre the MiG-15. and Tank's designs derives from a common reliance on the 1940's technology and from the principles of aerodynamics as given practical meaning by extensive German wind tunnel testing available to all competing post war nations. The Soviet YAK-25 featured two engines carried in underwing pods in a configuration similar to that of Sukhoi's early SU-9 and 11 and of the Me-262 which Yakovlev himself had much maligned. Further, the wing bore a striking resemblance to that which appeared on the 1950 Pulqui II design by Kurt Tank.

The test flight of the fourth prototype was made in 1954, and after the fall of Perón in the so-called "Revolución Libertadora" of 1955 only the fifth Pulqui was ready to go into action. At that point, Tank and a large part of his team had already left the Argentina. They lost political support for Peronist prestige. Even so the technicians who were in the factory made a demonstration of the capabilities of the aircraft, which at the controls of the Ten 1. Balado, had an accident on the return of the same, due to the failure of the supply of oxygen, causing hypoxia. The aircraft suffered substantial damage and was unable to recover. Last but not least to 1959 was completed N ° 5 of which little is known for its flights. It is housed in the Museum of industry in Córdoba.

Wingspan 10,62 m
Length 11,60 m
Height 3.25 m
Empty weight 3,554 Kg.
Total weight 5.988 Kg.
Armament 464 Kg.
Speed. Maximum 1,080 Km/h
Speed. Cruise 962 Km/h
Autonomy 2 hrs.
range 3.090 Km
Service ceiling 15,000 m
Armament 4 Oerlikon 20 mm cannons





NEWSLETTER
Join the GlobalSecurity.org mailing list



 
Page last modified: 21-07-2016 18:45:20 ZULU