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The illustrated encyclopedia of helicopters. New York: Bonanza Books. ISBN 0-517-43935-2. Best, Martin S. (September 2014). "A History of the Fairchild Hiller FH-1100 Helicopter: Part 2: Development and Operation of the FH-1100". Air-Britain Archive. pp. 107– 122. ISSN 0262-4923. Donald, David (1998). The complete encyclopedia of world ...
A mimeograph machine (often abbreviated to mimeo, sometimes called a stencil duplicator or stencil machine) was a low-cost duplicating machine that worked by forcing ink through a stencil onto paper. [1] The process was called mimeography, and a copy made by the process was a mimeograph.
hydraulic motor generator HMD Helmet-mounted display: HMU hydro-mechanical unit: In turbine engine: HOGE hover out of ground effect Helicopter operations HOTAS Hands On Throttle And Stick HPA human-powered aircraft: Aircraft type HPC high pressure compressor: In turbine engine: HPR High Pressure Rotor HPT high pressure turbine: In turbine ...
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Using letter copying presses, copies could be made up to twenty-four hours after a letter was written, though copies made within a few hours were best. A copying clerk would begin by counting the number of master letters to be written during the next few hours and by preparing the copying book. Suppose the clerk wanted to copy 20 one-page letters.
A Xerox digital photocopier in 2010. A photocopier (also called copier or copy machine, and formerly Xerox machine, the generic trademark) is a machine that makes copies of documents and other visual images onto paper or plastic film quickly and cheaply.
A Bell UH-1 Iroquois helicopter. A helicopter is a powered rotorcraft with rotors driven by the engine(s) throughout the flight, allowing it to take off and land vertically, hover, and fly forward, backward, or laterally. Helicopters have several different configurations of one or more main rotors.
The helicopter first flew on November 5, 1964. After test flight at Hughes facility at Culver City, California , the XV-9A was transferred to Edwards Air Force Base for further tests. The tests were satisfactory and the company was confident that the hot-cycle system would be widely used, although the XV-9A was noisy and had a high fuel ...