Impact of freeze horizon on the variation of delay distribution and workload for en route metering

Steven Lent, Jennifer Lock, Parimal Kopardekar, Steven Landry, Steven Green, Michael Jastrzebski

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

In time-based metering operations the freeze horizon is a key parameter with respect to operational efficiency and feasibility. Freeze horizon is the upstream distance/time from the metering fix at which the sequence and scheduled times of arrival for the metered flights are frozen and conformance operations can begin. When delay absorption begins too soon, systemic uncertainties such as internal departure times can result in unnecessary delay. When delay absorption begins too late, controller workload increases, and conformance to the schedule may require excessively large speed and/or turning maneuvers. This paper examines the variation in the distribution of delay and workload as a function of freeze horizon in order to better select efficient and feasible freeze horizons for time-based metering operations. The results indicate that the freeze horizon duration significantly affects the distribution of delay among the sectors. Additionally, the number of delay absorption control actions (e.g., speed and heading changes), which contribute to controller workload, varies with the freeze horizon.

Original languageEnglish (US)
Title of host publicationCollection of Technical Papers - AIAA 4th Aviation Technology, Integration, and Operations Forum, ATIO
PublisherAmerican Institute of Aeronautics and Astronautics Inc.
Pages358-374
Number of pages17
ISBN (Print)1563477181, 9781563477188
DOIs
StatePublished - 2004
EventCollection of Technical Papers - AIAA 4th Aviation Technology, Integration, and Operations Forum, ATIO - Chicago, IL, United States
Duration: Sep 20 2004Sep 23 2004

Publication series

NameCollection of Technical Papers - AIAA 4th Aviation Technology, Integration, and Operations Forum, ATIO
Volume1

Conference

ConferenceCollection of Technical Papers - AIAA 4th Aviation Technology, Integration, and Operations Forum, ATIO
Country/TerritoryUnited States
CityChicago, IL
Period9/20/049/23/04

All Science Journal Classification (ASJC) codes

  • Engineering(all)

Fingerprint

Dive into the research topics of 'Impact of freeze horizon on the variation of delay distribution and workload for en route metering'. Together they form a unique fingerprint.

Cite this