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Anonymous asked in Science & MathematicsEngineering · 1 decade ago

Who came up with the technology (or figured out how) to weld aluminum?

I am also looking for ANY information (other than what shows up on yahoo/google searches) on "Republic Aviation" based in Farmingdale NY. Does this company still operate? ANY info would be appreciated!!! My grandfather (whom I never met) worked for them and was affiliated with the FBI, the FBI won't release any info on him and I want to know more about what he did.

2 Answers

  • Anonymous
    1 decade ago
    Favorite Answer

    Republic Aviation Company

    From Wikipedia, the free encyclopedia

    Based in Farmingdale, Long Island, New York, the Republic Aviation Corporation was an American aircraft manufacturer responsible for the design and production of many important aircraft, including the P-47 Thunderbolt, F-84 Thunderjet, and F-105 Thunderchief.

    The Seversky Aircraft Company was founded in 1931 by Alexander de Seversky, a Russian expatriate and veteran WWI pilot who had lost a leg in the war. In the beginning, many of Seversky Aircraft's designers were Russian engineers that Servinsky had rescued from Stalin's purges by bringing them to the United States, including Michael Gregor and Alexander Kartveli, who would go on to design many of Republic's most famous aircraft.

    After several failed attempts, the Seversky Aircraft finally won a design competition for a new Army Air Corps fighter, and was awarded its first military contract in 1936 for the production of its Seversky P-35. The P-35 would achieve fame on December 7, 1941 when it became the first American aircraft to engage Japanese planes during WWII when several P-35's managed to get airborne during the Battle of Pearl Harbor.

    In 1939, Seversky Aircraft again entered in a military fighter competition, this time with the much improved AP-4. Unfortunately, the contract was instead awarded to the somewhat inferior Curtiss P-40, but the Army Air Corp was very pleased with the aircraft's medium and high altitude performance and ordered 13 additional AP-4's for testing.

    [edit] Republic Aviation

    By April 1939, the Seversky Aircraft Corporation had lost $550,000, and Seversky was forced out of the company he had founded. The board voted Wallice Kellet as President to replace him, and in September 1939, the company was reorganized as the Republic Aviation Corporation. Seversky continued to fight for his company, and the matter was not resolved to his satisfaction until September 1942.

    Meanwhile, Seversky's AP-4 continued in development, finally going into production as the P-43 Lancer. 272 P-43 Lancers would eventually be produced, with 108 of them being sent to China to be used against the Japanese. Many of these aircraft would pass through the hands of The AVG Flying Tigers, who were very pleased with the plane's performance at altitudes up to 30,000, while their P-40's were ineffective at altitudes over 20,000. Unfortunately, Claire Chennault disliked the early P-43's lack of self sealing fuel tanks and armor and declined to retain the plane for his crews.

    In 1939, both Republic and Curtiss participated in an Army competition to develop a lightweight interceptor. Curtiss submitted a light weight version of the P-40 designated the XP-46 while Republic submitted a similar design designated the XP-47. Both designs were based on a lightweight aircraft built around an Allison V-1710 V-12 engine, with the Republic design using a turbo-supercharger. In the end, neither design showed a significant improvement over the P-40 and neither would see production.

    Further development of the P-43 continued in the form of a lightweight version using a Pratt & Whitney R-2180 radial engine. The resulting aircraft was known as the XP-44. When the R-2180 didn't produce the expected horsepower, Republic switched to the Wright R-2600. Despite possessing 1,600 horsepower, his engine couldn't be turbo-supercharged and Republic finally modified the design again, this time to accommodate the enormous Pratt & Whitney R-2800 Double Wasp engine, which produced an incredible 1,850 horsepower. The resulting aircraft, now known as the P-44, was truly impressive. Capable of speeds of 404 mph at 20,000 ft, and a climb rate of 4,000 ft. per minute, the aircraft would have been an exceptional interceptor. Unfortunately, the aircraft was capable of carrying no more fuel than the P-43, and the Double Wasp engine was far more thirsty, significantly limiting the aircraft's range.

    As the air war in Europe progressed, the Army was discovering that what it really needed was a long range fighter capable of escorting bombers into Germany. Alexander Kartveli was called to the Army's Experimental Aircraft division and told of the new requirements, and that the P-44 would not be ordered in its current configuration. This was a devastating setback for Kartveli and Republic Aircraft because Kartveli knew the XP-44 could not be redesigned to meet these new requirements. On the train back to New York, he began sketching a new design. This aircraft would become the P-47 Thunderbolt.

    These Republic Aviation DVDs may interest you also:

    See details P-47 THUNDERBOLT How to Fly FLight Training Films on DVD

    WWII Military Aviation Documentary

    Presented on this DVD is a Series of 3 USAF Training Films from 1943. These Training Films were intended for all young pilots aspiring to fly the P-47 fighter.

    Runtime: 70 Minutes

    Market price: $17.99

    Our price: $11.99


    This is a collection of two very informative training films on Aluminum Welding. GREAT FOOTAGE!!!!

    First Film Title: Aluminum Tungsten Inert Gas Welding

    Some of the topics covered in the film include:

    How to set up the Tig Equipment

    How to weld a butt joint and a T Joint

    Horizontal Position Welding

    Proper safety precautions

    Plus Much More!!!!

    Second Film Title: Overhead Tee and Open Corner Joints on Aluminum Plate

    Mig Welding Aluminum

    Setting Up Equipment

    Proper Ventilation

    Personal Safety Equipment

    Current Range Selection

    Electrode Polarity Selection

    Plus Much More!!!!

    Great Video and Audio Quality!!!

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  • 6 years ago

    Michael Gregor and Alexander Kartveli are NOT russian engineers (although that what they were known as unfortunately). They are both Georgian. It might not matter to you but it really matters for Georgia.

    • mtg6 years agoReport

      Russia always took credit for anything done by any other nationalities of the former USSR. Georgia was occupied by Russia in 1921 and that was the reason Kartveli did not return to his homeland. I think it is unfortunate and ironic he is known as Russian engineer :(

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