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collection:
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nasa new
collection
nasa new
collection
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mediatype:
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texts
mediatype
texts
mediatype
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collection:
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nasa_techdocs
collection
nasa_techdocs
collection
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title:
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Use of a Prototype Airborne Separation Assurance System for Resolving Near-Term Conflicts During Autonomous Aircraft Operations
title
Use of a Prototype Airborne Separation Assurance System for Resolving Near-Term Conflicts During Autonomous Aircraft Operations
title
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description:
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NASA is currently investigating a new concept of operations for the National Airspace System, designed to improve capacity while maintaining or improving current levels of safety. This concept, known as Distributed Air/Ground Traffic Management (DAGTM), allows appropriately equipped autonomous aircraft to maneuver freely for flight optimization while resolving conflicts with other traffic and staying out of special use airspace and hazardous weather. In order to perform these tasks, pilots use prototype conflict detection, prevention, and resolution tools, collectively known as an Airborne Separation Assurance System (ASAS). While ASAS would normally allow pilots to resolve conflicts before they become hazardous, evaluation of system performance in sudden, near-term conflicts is needed in order to determine concept feasibility. An experiment was conducted in NASA Langley's Air Traffic Operations Lab to evaluate the prototype ASAS for enabling pilots to resolve near-term conflicts and examine possible operational effects associated with the use of lower separation minimums. Sixteen commercial airline pilots flew a total of 32 traffic scenarios that required them to use prototype ASAS tools to resolve close range pop-up conflicts. Required separation standards were set at either 3 or 5 NM lateral spacing, with 1000 ft vertical separation being used for both cases. Reducing the lateral separation from 5 to 3 NM did not appear to increase operational risk, as indicated by the proximity to the intruder aircraft. Pilots performed better when they followed tactical guidance cues provided by ASAS than when they didn't follow the guidance. In an effort to improve compliance rate, ASAS design changes are currently under consideration. Further studies will of evaluate these design changes and consider integration issues between ASAS and existing Airborne Collision Avoidance Systems (ACAS).
description
NASA is currently investigating a new concept of operations for the National Airspace System, designed to improve capacity while maintaining or improving current levels of safety. This concept, known as Distributed Air/Ground Traffic Management (DAGTM), allows appropriately equipped autonomous aircraft to maneuver freely for flight optimization while resolving conflicts with other traffic and staying out of special use airspace and hazardous weather. In order to perform these tasks, pilots use prototype conflict detection, prevention, and resolution tools, collectively known as an Airborne Separation Assurance System (ASAS). While ASAS would normally allow pilots to resolve conflicts before they become hazardous, evaluation of system performance in sudden, near-term conflicts is needed in order to determine concept feasibility. An experiment was conducted in NASA Langley's Air Traffic Operations Lab to evaluate the prototype ASAS for enabling pilots to resolve near-term conflicts and examine possible operational effects associated with the use of lower separation minimums. Sixteen commercial airline pilots flew a total of 32 traffic scenarios that required them to use prototype ASAS tools to resolve close range pop-up conflicts. Required separation standards were set at either 3 or 5 NM lateral spacing, with 1000 ft vertical separation being used for both cases. Reducing the lateral separation from 5 to 3 NM did not appear to increase operational risk, as indicated by the proximity to the intruder aircraft. Pilots performed better when they followed tactical guidance cues provided by ASAS than when they didn't follow the guidance. In an effort to improve compliance rate, ASAS design changes are currently under consideration. Further studies will of evaluate these design changes and consider integration issues between ASAS and existing Airborne Collision Avoidance Systems (ACAS).
description
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subject:
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MARS ENVIRONMENT
subject
MARS ENVIRONMENT
subject
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subject:
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SIMULATION
subject
SIMULATION
subject
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subject:
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DUST
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subject:
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HEAT FLUX
subject
HEAT FLUX
subject
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subject:
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CLIMATE
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subject:
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MARS ATMOSPHERE
subject
MARS ATMOSPHERE
subject
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subject:
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ANNUAL VARIATIONS
subject
ANNUAL VARIATIONS
subject
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subject:
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ATMOSPHERIC GENERAL CIRCULATION MODELS
subject
ATMOSPHERIC GENERAL CIRCULATION MODELS
subject
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subject:
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POLAR REGIONS
subject
POLAR REGIONS
subject
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subject:
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HEAT BALANCE
subject
HEAT BALANCE
subject
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subject:
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BAROCLINIC INSTABILITY
subject
BAROCLINIC INSTABILITY
subject
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identifier:
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nasa_techdoc_2004008 5730
identifier
nasa_techdoc_2004008 5730
identifier
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licenseurl:
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uploader:
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gwilliam@archive.org
uploader
gwilliam@archive.org
uploader
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addeddate:
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2011-06-03 02:50:08
addeddate
2011-06-03 02:50:08
addeddate
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publicdate:
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2011-06-03 02:50:08
publicdate
2011-06-03 02:50:08
publicdate
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creator:
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Barhydt, Richard
creator
Barhydt, Richard
creator
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creator:
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Eischeid, Todd M.
creator
Eischeid, Todd M.
creator
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creator:
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Palmer, Michael T.
creator
Palmer, Michael T.
creator
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creator:
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Wing, David J
creator
Wing, David J
creator
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ImageUID:
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file:/home/lunaadmin /Source_download/201 106/1/nasa_techdoc_2 0040085730/200400857 30.pdf
ImageUID
file:/home/lunaadmin /Source_download/201 106/1/nasa_techdoc_2 0040085730/200400857 30.pdf
ImageUID
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date:
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2003
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rights:
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Public Domain
rights
Public Domain
rights
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ppi:
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300
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year:
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2003
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language:
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eng
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document-source:
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CASI
document_source
CASI
document-source
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documentid:
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20040085730
documentid
20040085730
documentid
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nasa-center:
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Langley Research Center
nasa_center
Langley Research Center
nasa-center
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online-source:
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http://wayback.archi ve-it.org/1792/20100 214020734/http://hdl .handle.net/2060/200 40085730
online_source
http://wayback.archi ve-it.org/1792/20100 214020734/http://hdl .handle.net/2060/200 40085730
online-source
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original-nasa-rights:
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Unclassified; Copyright; Unlimited; Publicly available;
original_nasa_rights
Unclassified; Copyright; Unlimited; Publicly available;
original-nasa-rights
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updated-added-to-ntrs:
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2009-07-29
updated_added_to_ntr s
2009-07-29
updated-added-to-ntr s
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contributor:
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NASA
contributor
NASA
contributor
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identifier-access:
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identifier_access
identifier-access
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identifier-ark:
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ark:/13960/t95729m75
identifier_ark
ark:/13960/t95729m75
identifier-ark
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ocr:
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ABBYY FineReader 8.0
ocr
ABBYY FineReader 8.0
ocr
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repub_state:
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4
repub_state
4
repub_state
|
