Effects of Weather on Airport Capacity
Effects of Weather on Airport Capacity

Author: F. B. Pogust

Publisher:

Published: 1963

Total Pages: 102

ISBN-13:

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On the basis of movement data for 681 days at Idlewild and aircraft spacing data from Idlewild and O'Hare Airports, the effects of various weather conditions on airport capacity were analyzed. The movement data was used to show how wind and ceiling visibility influence runway choice and the type of aircraft demanding service, which, in turn, affect airport capacity. An analysis of the movement rate versus the calculated IFR capacity led to the isolation of a variation in capacity in relation to a weather factor. This factor, called the Ceiling Visibility Factor (CVF), was defined as the product of ceiling and visibility and, on the basis of available data, was plotted as a function of a percentage of calculated IFR capacity. An analysis of spacing data, taken on days when weather was a factor in aircraft operations, was used to identify a special arrival-spacing situation that occurs at large air-carrier airports when all large aircraft always use IFR separation. An accumulation of weather sensitive spacing factors was begun. A possible means of applying the results of this project to problems of flow control and air-traffic metering for future automated terminal air-traffic control systems has been analyzed. (Author).

Toward a Concept of Operations for Aviation Weather Information Implementation in the Evolving National Airspace System
Toward a Concept of Operations for Aviation Weather Information Implementation in the Evolving National Airspace System

Author: National Aeronautics and Space Adm Nasa

Publisher: Independently Published

Published: 2018-09-17

Total Pages: 34

ISBN-13: 9781723769832

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The capacity of the National Airspace System is being stressed due to the limits of current technologies. Because of this, the FAA and NASA are working to develop new technologies to increase the system's capacity which enhancing safety. Adverse weather has been determined to be a major factor in aircraft accidents and fatalities and the FAA and NASA have developed programs to improve aviation weather information technologies and communications for system users The Aviation Weather Information Element of the Weather Accident Prevention Project of NASA's Aviation Safety Program is currently working to develop these technologies in coordination with the FAA and industry. This paper sets forth a theoretical approach to implement these new technologies while addressing the National Airspace System (NAS) as an evolving system with Weather Information as one of its subSystems. With this approach in place, system users will be able to acquire the type of weather information that is needed based upon the type of decision-making situation and condition that is encountered. The theoretical approach addressed in this paper takes the form of a model for weather information implementation. This model addresses the use of weather information in three decision-making situations, based upon the system user's operational perspective. The model also addresses two decision-making conditions, which are based upon the need for collaboration due to the level of support offered by the weather information provided by each new product or technology. The model is proposed for use in weather information implementation in order to provide a systems approach to the NAS. Enhancements to the NAS collaborative decision-making capabilities are also suggested.McAdaragh, Raymon M.Langley Research CenterNATIONAL AIRSPACE SYSTEM; WEATHER; ACCIDENT PREVENTION; AIRCRAFT ACCIDENTS; FLIGHT SAFETY; AIRCRAFT SAFETY; AUGMENTATION; DECISION MAKING; FLIGHT CONDITIONS; INFORMATION SYSTEMS

Aviation Weather Surveillance Systems
Aviation Weather Surveillance Systems

Author: Pravas Mahapatra

Publisher: IET

Published: 1999

Total Pages: 484

ISBN-13: 9780852969373

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Focusing on radar-based surveillance, this book has been written to provide a comprehensive introduction to the science, sensors and systems that form modern aviation weather surveillance systems.

Examining the Pilot and Controller Performance Data When in a Free Flight with Weather Phenomenon
Examining the Pilot and Controller Performance Data When in a Free Flight with Weather Phenomenon

Author: National Aeronautics and Space Administration (NASA)

Publisher: Createspace Independent Publishing Platform

Published: 2018-05-31

Total Pages: 58

ISBN-13: 9781720516804

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The present study investigated effects of weather related factors on the performance of pilots under free flight. A weather scenario was defined by a combination of precipitation factors (light rain, moderate rain, and heavy rain or snow), visibility (1,4,8 miles), wind conditions (light, medium, or heavy), cloud ceiling (800ft. below, 1800ft above, and 4000ft horizontal). The performance of the aircraft self-separation was evaluated in terms of detection accuracy and detection times for student- and commercial (expert) pilots. Overall, the results obtained from a behavioral analysis showed that in general, the ability to recognize intruder aircraft conflict incidents, followed by the ability to acquire the spatial location of the intruder aircraft relative to ownership aircraft were judged to be the major cognitive tasks as perceived by the participants during self-separation. Further, the participants rarely used cockpit display of traffic information (CDTI) during conflict management related to aircraft separation, but used CDTI highly during decision-making tasks. In all weather scenarios, there were remarkable differences between expert and student pilots in detection times. In summary, weather scenarios were observed to affect intruder aircraft detection performance accuracies. There was interaction effects between weather Scenario-1 and Scenario-2 for climbing task data generated by both expert- and student- pilots at high traffic density. Scenario-3 weather condition provided an opportunity for poor detection accuracy as well as detection time increase. This may be attributed to low visibility. The intruder aircraft detection times were not affected by the weather conditions during climbing and descending tasks. The decision of pilots to fly into certain weather condition was dependent in part on the warning distance to the location of the weather. When pilots were warned of the weather conditions, they were more likely to fly their aircraft into it, but mos