NASA Technical Note
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Page : 624 pages
File Size : 30,1 MB
Release : 1972
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Author :
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Page : 624 pages
File Size : 30,1 MB
Release : 1972
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Author : George H. Neiner
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Page : 28 pages
File Size : 33,9 MB
Release : 1970
Category : Jet engines
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The servosystem design of a high-response airflow bypass valving system for supersonic mixed-compression inlets or other industrial or aerospace pneumatic systems is described. The valve utilizes a multislotted plate to achieve flow area change with minimum stroke and mass of moving parts. The servosystem utilizes a hydraulic piston-in-cylinder actuator close-coupled to a two-stage electrohydraulic servovalve. Using electronic compensation the small-amplitude response of the system, modulating 14 percent of its full flow area, is flat within 0 to -3 dB to 110 Hz. (161 cm [to the second power] ). A mathematical model of the system is presented and analytical responses are compared with experimental data.
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Page : 364 pages
File Size : 38,85 MB
Release : 1994
Category : Aeronautics
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Author : Gary L. Cole
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Page : 44 pages
File Size : 48,45 MB
Release : 1969
Category : Airplanes
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Author : Robert J. Baumbick
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Page : 24 pages
File Size : 41,94 MB
Release : 1974
Category : Aerodynamics, Supersonic
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Results of experimental tests conducted on a supersonic, mixed-compression, axisymmetric inlet are presented. The inlet is designed for operation at Mach 2.5 with a turbofan engine (TF-30). The inlet was coupled to either a choked orifice plate or a long duct which had a variable-area choked exit plug. Closed-loop frequency responses of selected diffuser static pressures used in the terminal-shock control system are presented. Results are shown for Mach 2.5 conditions with the inlet coupled to either the choked orifice plate or the long duct. Inlet unstart-restart traces are also presented. High-response inlet bypass doors were used to generate an internal disturbance and also to achieve terminal-shock control.
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Page : 610 pages
File Size : 40,94 MB
Release : 1978
Category : Aeronautics
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Page : 1184 pages
File Size : 13,12 MB
Release : 1974
Category : Aeronautics
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Page : 224 pages
File Size : 10,88 MB
Release : 1970
Category : Science
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Page : 1388 pages
File Size : 11,97 MB
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Category : Government publications
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Author : United States. Superintendent of Documents
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Page : 1348 pages
File Size : 39,64 MB
Release : 1970
Category : United States
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