Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. Pages: 55. Chapters: Bell UH-1 Iroquois, Eurocopter HH-65 Dolphin, Westland Sea King, Bell UH-1N Twin Huey, Sikorsky S-92, Sikorsky S-61, Sikorsky HH-60 Jayhawk, Eurocopter AS332 Super Puma, AgustaWestland AW109, Bell 204/205, Sikorsky S-61R, Sikorsky H-19, Sikorsky S-70, Eurocopter EC155, Eurocopter EC225 Super Puma, AgustaWestland CH-149 Cormorant, Bell 212, Boeing Vertol CH-113 Labrador, Westland Whirlwind, Sikorsky S-62. Excerpt: The Bell UH-1 Iroquois is a military helicopter powered by a single, turboshaft engine, with a two-bladed main rotor and tail rotor. The helicopter was developed by Bell Helicopter to meet the United States Army's requirement for a medical evacuation and utility helicopter in 1952, and first flew on 20 October 1956. Ordered into production in March 1960, the UH-1 was the first turbine-powered helicopter to enter production for the United States military, and more than 16,000 have been produced worldwide. The first combat operation of the UH-1 was in the service of the U.S. Army during the Vietnam War. The original designation of HU-1 led to the helicopter's nickname of Huey. In September 1962, the designation was changed to UH-1, but Huey remained in common use. Approximately 7,000 UH-1 aircraft saw service in Vietnam. A Bell XH-40, a prototype of the UH-1In 1952, the Army identified a requirement for a new helicopter to serve as medical evacuation (MEDEVAC), instrument trainer and general utility aircraft. The Army determined that current helicopters were too large, underpowered, or were too complex to maintain easily. In November 1953, revised military requirements were submitted to the Department of the Army. Twenty companies submitted designs in their bid for the contract, including Bell Helicopter with the Model 204 and Kaman Aircraft with a turbine-powered version of the H-43. On 23 February 1955, ..