The Effect of Ownship Information and NexRad Resolution on Pilot Decision Making in the Use of a Cockpit Weather Information Display PDF Download
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Author: National Aeronautics and Space Administration (NASA)
Publisher: Createspace Independent Publishing Platform
ISBN: 9781721103522
Category :
Languages : en
Pages : 170
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Book Description
A two-phase experiment was conducted to explore the effects of data-link weather displays upon pilot decision performance. The experiment was conducted with 49 instrument rated pilots who were divided into four groups and placed in a simulator with a realistic flight scenario involving weather containing convective activity. The inflight weather display depicted NEXRAD images, with graphical and textual METARs over a moving map display. The experiment explored the effect of weather information, ownship position symbology and NEXRAD cell size resolution. The phase-two experiment compared two groups using the data-linked weather display with ownship position symbology. These groups were compared to the phase-one group that did not have ownship position symbology. The phase-two pilots were presented with either large NEXRAD cell size (8 km) or small cell size (4 km). Observations noted that the introduction of ownship symbology did not appear to significantly impact the decision making process, however, the introduction of ownship did reduce workload. Additionally, NEXRAD cell size resolution did appear to influence the tactical decision making process. Novacek, Paul F. and Burgess, Malcolm A. and Heck, Michael L. and Stokes, Alan F. and Stough, H. Paul, III (Technical Monitor) Langley Research Center NAS1-99074; RTOP 728-40-10-03
Author: National Aeronautics and Space Administration (NASA)
Publisher: Createspace Independent Publishing Platform
ISBN: 9781721103522
Category :
Languages : en
Pages : 170
Get Book Here
Book Description
A two-phase experiment was conducted to explore the effects of data-link weather displays upon pilot decision performance. The experiment was conducted with 49 instrument rated pilots who were divided into four groups and placed in a simulator with a realistic flight scenario involving weather containing convective activity. The inflight weather display depicted NEXRAD images, with graphical and textual METARs over a moving map display. The experiment explored the effect of weather information, ownship position symbology and NEXRAD cell size resolution. The phase-two experiment compared two groups using the data-linked weather display with ownship position symbology. These groups were compared to the phase-one group that did not have ownship position symbology. The phase-two pilots were presented with either large NEXRAD cell size (8 km) or small cell size (4 km). Observations noted that the introduction of ownship symbology did not appear to significantly impact the decision making process, however, the introduction of ownship did reduce workload. Additionally, NEXRAD cell size resolution did appear to influence the tactical decision making process. Novacek, Paul F. and Burgess, Malcolm A. and Heck, Michael L. and Stokes, Alan F. and Stough, H. Paul, III (Technical Monitor) Langley Research Center NAS1-99074; RTOP 728-40-10-03
Author: National Aeronautics and Space Administration (NASA)
Publisher: Createspace Independent Publishing Platform
ISBN: 9781721943487
Category :
Languages : en
Pages : 240
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Book Description
This experiment investigated improvements to cockpit weather displays to better support the hazardous weather avoidance decision-making of general aviation pilots. Forty-eight general aviation pilots were divided into three equal groups and presented with a simulated flight scenario involving embedded convective activity. The control group had access to conventional sources of pre-flight and in-flight weather products. The two treatment groups were provided with a weather display that presented NEXRAD mosaic images, graphic depiction of METARs, and text METARs. One treatment group used a NEXRAD image looping feature and the second group used the National Convective Weather Forecast (NCWF) product overlaid on the NEXRAD display. Both of the treatment displays provided a significant increase in situation awareness but, they provided incomplete information required to deal with hazardous convective weather conditions, and would require substantial pilot training to permit their safe and effective use. Burgess, Malcolm A. and Thomas, Rickey P. Langley Research Center
Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 14
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Book Description
A study was conducted to determine how variations in displayed NEXRAD weather data resolution interact with the pilot's direct view of weather. Pilots (32) were assigned to on of four groups; 8km, 4km, or 2km resolution, and a baseline condition without NEXRAD imagery. Each flew the simulator from Santa Rosa, NM with the intent to land at Albuquerque. Heavy precipitation moved into the area during the flight, and pilots were required to decide, using both the NEXRAD data and their out-the-window view, whether to continue or to divert to an alternate airport. Pilots spent more time looking at higher-resolution images than at the lower-resolution ones. Baseline-and 2km-condition pilots deferred their decisions longer than did the other two groups.
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Publisher:
ISBN:
Category :
Languages : en
Pages : 0
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Book Description
A study was conducted to determine how variations in displayed NEXRAD weather data resolution interact with the pilot's direct view of weather. Pilots (32) were assigned to on of four groups; 8km, 4km, or 2km resolution, and a baseline condition without NEXRAD imagery. Each flew the simulator from Santa Rosa, NM with the intent to land at Albuquerque. Heavy precipitation moved into the area during the flight, and pilots were required to decide, using both the NEXRAD data and their out-the-window view, whether to continue or to divert to an alternate airport. Pilots spent more time looking at higher-resolution images than at the lower-resolution ones. Baseline-and 2km-condition pilots deferred their decisions longer than did the other two groups.
Author: National Aeronautics and Space Administration (NASA)
Publisher: Createspace Independent Publishing Platform
ISBN: 9781720516804
Category :
Languages : en
Pages : 58
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Book Description
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
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Category :
Languages : en
Pages : 28
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Author: Janelle V. O'Brien
Publisher:
ISBN: 9781423570905
Category :
Languages : en
Pages : 72
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Book Description
As the concept of Free Flight continues to be explored, it becomes increasingly evident that pilots must have displays that effectively depict traffic and weather information as more and more responsibility for separation from such hazards transfers from air traffic controllers to pilots. This research effort seeks to address two display design Issues: dimensionality (3D perspective versus 2D coplanar displays) and database integration (separation or integration through overlays of traffic and weather information within displays) . it was hypothesized that the 2D displays would result in fewer traffic and weather conflicts then the 3D displays, replicating the findings of Merwin and Wickens (1996) regarding traffic avoidance. As suggested by the Proximity Compatibility Principle (Wickens & Carswell, 1995), the data base integrated displays were expected to result in fewer conflicts than the separated displays for trials in which both weather and traffic were critical for maneuver choice. Finally, as revealed in Merwin and Wickens (1996), it was hypothesized that display type and scenario geometry would effect maneuver strategies. 17 general aviation flight instructors flew a series of trials with four display types in which dimensionality, database integration, and hazard geometries were manipulated. Analyses of the data revealed that the 2D displays result in a smaller percentage of conflicts with traffic and weather hazards. The results regarding database integration suggest that displays in which traffic and weather are overlaid result in fewer hazard conflicts for trials in which both hazard types are critical to maneuver selection. Display type and scenario geometry were also found to effect maneuver strategies, including a pronounced 2D advantage for trials in which the traffic is descending or ascending, while performance for level i>IL&H92H(-H1I1>
Author: O. Veronika Prinzo
Publisher:
ISBN:
Category : Aeronautical instruments
Languages : en
Pages : 24
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Author: G-10 W Weather Information Systems Committee
Publisher:
ISBN:
Category :
Languages : en
Pages : 0
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Book Description
This SAE Aerospace Recommended Practice (ARP) addresses the information content for the electronic presentation of data linked weather Meteorological (MET) information used in the cockpit. It defines guidelines for the electronic presentation of MET information (including text, graphics, textures, icons, and symbology) to the flight crew.This ARP is applicable to certified equipment for the electronic display (whether installed or portable) of MET information in the cockpit. This ARP also provides a set of symbols that illustrate the depiction of data linked MET information on flight deck display systems such as Navigation Displays, Multi-function Displays, and Electronic Flight Bags. These recommendations complement standard symbology guidelines for airborne applications already in existence (see reference section for applicable documents). Weather data, information, and products are widely available today to the public as well as to the aviation community. Weather information has been provided to the cockpits of General Aviation (GA) users for several years and is now being introduced into the cockpit of commercial aircraft. Guidelines for the standardization of this information are needed to ensure the appropriate display of weather information in the cockpit to adequately address issues of workload, meteorological situation awareness, training, and information management.
Author: National Aeronautics and Space Adm Nasa
Publisher:
ISBN: 9781724168313
Category :
Languages : en
Pages : 26
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Book Description
This effort was supported by the System-Wide Accident Prevention element of NASA s Aviation Safety Program. This document may serve as a first step toward the goal of integrating traffic, weather, and terrain information; it provides recommendations for a cockpit display that integrates weather information with traffic information. While some of the recommendations are general enough to be used for any type of operations, these recommendations are targeted for Federal Aviation Regulations Part 121 Operations. The document is organized in the following manner. First, weather information is discussed as an independent subject matter, and recommendations are presented for presenting weather in the cockpit. Second, traffic is discussed independently, but this discussion essentially reviews work on the display of traffic in the cockpit. Third, recommendations for the cockpit integration of weather and traffic information are discussed. Fourth, several research groups are recognized for their efforts in developing systems that are relevant to the current discussion. Finally, closing remarks provide suggestions for future efforts. Comerford, Doreen A. Ames Research Center NASA/TM-2004-212830, IH-055...
