May 18, 2015 Hitting Sanctuaries: Cambodia During the 1960s, the North Vietnamese and Viet Cong enjoyed sanctuaries in Cambodia, crossing the border for attacks into South Vietnam and then fleeing back across the border to safety. Moreover, the North Vietnamese, with permission of the "neutral" Cambodian government, used Cambodian ports and
May 18, 2015 Helio U-10D Super Courier The Super Courier was a light utility transport developed from a civilian design first tested in 1949. Its short takeoff and landing (STOL) capability allowed it to operate from a clearing the size of a football field, and its ability to fly slowly at speeds of approximately 25-35 mph made it an
May 4, 2015 Honeywell C-1 Autopilot The HoneywellC-1 Autopilot was an electronic-mechanical system used to lessen pilot fatigue by automatically flying an airplane in straight and level flight. It could also be used to fly the aircraft through gentle maneuvers. When combined with the Norden bombsight, it created the stability
May 1, 2015 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
April 10, 2015 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
April 10, 2015 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,
April 7, 2015 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
April 7, 2015 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
April 7, 2015 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
March 6, 2015 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