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  • Heavy Bombers

    In the summer of 1943, the U.S. began building up its heavy bomber forces in Europe at a more rapid rate, and greater numbers of B-17s and B-24s were dispatched against targets inside Germany. However, whenever they flew beyond the range of their P-47 escort, however, they risked being mauled by

  • Hitler’s Juggernaut

    Hitler's juggernaut invaded Poland on Sept. 1, 1939, and another World War began. The rapidity with which Poland fell to the invaders, largely due to the Luftwaffe, had a stunning effect upon many Americans. What little lethargy remained was shattered in April-June 1940 when Norway, Holland, Belgium

  • High Altitude Research

    In continuing its program for investigating flight at high altitudes, the Air Corps ordered from Lockheed a twin-engine airplane designated the XC-35. This was the world's first airplane specifically constructed with a pressure cabin. For its achievements with the XC-35 in high-altitude research,

  • Halberstadt CL IV

    Introduced into combat during the last great German offensive of World War I, the CL IV supported German troops by attacking Allied ground positions. Equipped with both fixed and flexible machine guns, hand-dropped grenades and small bombs, the CL IV proved very effective in this role, but it lacked

  • Heavier-than-Air Flight

    Heavier-than-air vehicles generally achieve flight with aerodynamic lift created by airflow over a surface (usually a wing). There were three basic types of early heavier-than-air vehicles -- kites, gliders and airplanes. Kites are unpowered, tethered craft. Gliders fly freely. Both kites and

  • Hispano-Suiza Model A

    The Hispano-Suiza water-cooled engine, adopted by the French Air Service in 1916, rapidly proved its value in combat. After the United States entered World War I, the Wright-Martin company adapted the "Hisso" to American manufacturing methods and produced it in large numbers.The 150-hp Model A on

  • Hmong and other Indigenous People

    The majority of the Vietnamese population is made up of ethnic Vietnamese (84%) and ethnic Chinese (2%) who for the most part tend to live in urban and coastal areas. The remaining population is made up of tribal groups whose ancestors came to Vietnam from other Asian countries and who are referred

  • History of the National Museum of the U.S. Air Force

    The National Museum of the United States Air Force is internationally acclaimed as the world's largest and oldest military aviation museum. It is located at Wright-Patterson Air Force Base, near Dayton, Ohio, home of the Wright brothers.The museum's origin dates back to 1923 when it started in the