Download or read book Visibility Unlimited written by Ernest G. Vetter and published by . This book was released on 1942 with total page 462 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Blind Landings written by Erik M. Conway and published by . This book was released on 2006 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: When darkness falls, storms rage, fog settles, or lights fail, pilots are forced to make "instrument landings," relying on technology and training to guide them through typically the most dangerous part of any flight. In this original study, Erik M. Conway recounts one of the most important stories in aviation history: the evolution of aircraft landing aids that make landing safe and routine in almost all weather conditions. Discussing technologies such as the Loth leader-cable system, the American National Bureau of Standards system, and, its descendants, the Instrument Landing System, the MIT-Army-Sperry Gyroscope microwave blind landing system, and the MIT Radiation Lab's radar-based Ground Controlled Approach system, Conway interweaves technological change, training innovation, and pilots' experiences to examine the evolution of blind landing technologies. He shows how systems originally intended to produce routine, all-weather blind landings gradually developed into routine instrument-guided approaches. Even so, after two decades of development and experience, pilots still did not want to place the most critical phase of flight, the landing, entirely in technology's invisible hand. By the end of World War II, the very concept of landing blind therefore had disappeared from the trade literature, a victim of human limitations.
Download or read book Visibility written by and published by . This book was released on 1955 with total page 8 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Aviation Weather written by United States. National Weather Service and published by . This book was released on 1965 with total page 299 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Politics of In Visibility written by Kath Woodward and published by Springer. This book was released on 2015-09-01 with total page 179 pages. Available in PDF, EPUB and Kindle. Book excerpt: Visibility matters in contemporary societies; online, in the media and in the public eye. But who is seen and how? Are women still seen through a male gaze? This book explores the politics of looking and being looked at, and the relationship between actual and virtual worlds, for example in sport, art and cinema.
Download or read book Estimates of Visibility from High Altitude Aircraft written by John D. Coakley and published by . This book was released on 1948 with total page 60 pages. Available in PDF, EPUB and Kindle. Book excerpt: The distance at which an object becomes visible depends upon such factors as brightness contrast, target size, brightness level, and atmospheric attenuation. Numerical values are selected to represent the influence of these variables under the conditions of high altitude flight. Visibility is examined under the following conditions: (a) Altitude of observer--sea level, 50,000, 100,000, and 200,000 feet. (b) Altitude of target--from sea level to approximately 300,000 feet (60 miles). (c) Background brightness conditions--from 1 to 32 footlamberts. (d) Contrast ratio between target and background--for values of 1, 5, 10, and 100. The computation of visibility is based on visual acuity data corrected for the effect of atmospheric attenuation at various altitudes. A round object with a diameter of 10 feet may be used as a representative target. (Author).
Download or read book Flight written by and published by . This book was released on 1921 with total page 1336 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Physiology of Flight written by United States. Air Force and published by . This book was released on 1953 with total page 204 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Comments on Air to Air Visibility at High Altitude written by and published by . This book was released on 1954 with total page 14 pages. Available in PDF, EPUB and Kindle. Book excerpt: Aviators flying at high altitude report difficulty in sighting other aircraft. The factors causing this poor air-to air visibility are discussed, particularly the phenomenon of 'empty field' myopia. It is concluded that the correction of the myopia may moderately improve air-to-air vision. An experiment for quantitatively determining the improvement is proposed, and some practical methods of correcting the empty field myopia are suggested.
Download or read book Final Approach Visibility Studies written by and published by . This book was released on 1955 with total page 116 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Civil Air Regulations written by and published by . This book was released on 1947-10 with total page 18 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Everything Explained for the Professional Pilot written by Richie Lengel and published by . This book was released on 2012 with total page 394 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Visibility of the Image written by Lambert Wiesing and published by Bloomsbury Publishing. This book was released on 2016-09-22 with total page 281 pages. Available in PDF, EPUB and Kindle. Book excerpt: Now available in English for the first time, The Visibility of the Image explores the development of an influential aesthetic tradition through the work of six figures. Analysing their contribution to the progress of formal aesthetics, from its origins in Germany in the 1880s to semiotic interpretations in America a century later, the six chapters cover: Robert Zimmermann (1824-1898), the first to separate aesthetics and metaphysics and approach aesthetics along the lines of formal logic, providing a purely syntactic way of using signs, regardless of objective content; Alois Riegl (1858-1905), who went on to further develop aesthetics on the model of formal logic, creating a theory of style in response to Zimmermann's call for an aesthetics oriented toward formal logic; Heinrich Wölfflin (1864-1945), who represents a step toward an understanding of consciousness by using pictures as cognitive tools; Konrad Fiedler (1841-1895), the Saxon philosopher who considered the possibility that some kinds of images are made and viewed not for what they show, but for their visibility's sake alone; Maurice Merleau-Ponty (1908-1961), responsible for taking up the connections between the problems of reducing the range of potential meanings and contexts of a given image down to just the picture surface; Charles William Morris (1901-1979), who set out to establish whether a picture with no objective reference, such as an abstract painting, still counts as a sign, and if so, in what sense. Bringing these thinkers together and interlinking their ideas, Lambert Wiesing presents an engaging history of formal aesthetics, while reconstructing the philosophical foundations for the appearance of new image forms in the 20th century, including the video-clip, abstract collage, digital simulation and virtual reality. Using this original approach, The Visibility of the Image introduces the rise of modern image theory and provides a valuable account of our engagement with pictures in the 21st century.
Download or read book Meteorology and Flight written by Tom Bradbury and published by A&C Black. This book was released on 1996 with total page 186 pages. Available in PDF, EPUB and Kindle. Book excerpt: A practical weather book for anyone interested in flight, covering both large and small-scale systems. This edition contains up-to-date information on means of obtaining data such as the MetFAX system, plus details on METAR and TAF reports. The book describes the infulence of high-level jet streams on the development of depressions, as well as detailing thermals, lee waves and up-and-down currents which are important to pilots of sailplanes, microlights, hang gliders and balloons. Diagrams show the movement of air at various heights and also trace the development of clouds, from fair weather cumulus to giant cumulonimbus and the associated hazards of lightning, hail, downbursts and outflows.
Download or read book Object Visibility Patterns in Low Level Flight written by Robert H. Wright and published by . This book was released on 1975 with total page 36 pages. Available in PDF, EPUB and Kindle. Book excerpt: Line of sight viewing angle, range and time distributions are given for a 70 kilometer sample of tree-top level annular (fisheye) imagery, and comparison made between these data and theoretical random single tree line of sight distributions. The effects of location over open and tree covered terrain are assessed, and limited data on the effect of altitude presented. Relative azimuth, elevation and range of objects when they first emerged into view were recorded by type of object. Relative angle of crossing linear features was determined, along with the duration that information of navigational value could be determined. When over trees the actual masking function was grossly different from the theoretical curves, while over open terrain actual masking approximated the five percent cover theoretical curve at close range and the one percent curve at 1000 meters. Over trees, masking for tank-size vehicles ranged from 83 to 93 percent, and over open terrain from 10 to 77 percent masking. Only 12.5 percent of linear features were found to be oriented within plus or minus 30 degrees of the nose at crossing, while 58.3 percent were within plus or minus 30 degrees of perpendicular to the nose. This finding implies viewing to the sides as an aircraft crosses features is necessary in order to see the feature details that will provide positive geographic orientation. The detailed viewing along linear features required for positive geographic orientation was available for an average of 24 meters, or one second at 50 knots. Limited data are presented on the effect of altitude on duration of line of sight to objects that provide information of value in geographic orientation. (Author).
Download or read book Flying Magazine written by and published by . This book was released on 1981-08 with total page 106 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Head up Transition Behavior of Pilots During Simulated Low visibility Approaches written by Richard F. Haines and published by . This book was released on 1980 with total page 40 pages. Available in PDF, EPUB and Kindle. Book excerpt:
