Models and Algorithms for Transient Queueing Congestion at Airports

Models and Algorithms for Transient Queueing Congestion at Airports

W e develop a new model for studying the phenomenon of congestion in a transient environment, focusing on the problem of aircraft landings at a busy "hub" airport. Our model is based on a Markov / semi-Markov treatment of changes in the weather, the principal source of uncertainty governing service times, together with a treatment of the arrival stream as time-varying but deterministic. The mod...

Models and Algorithms for Transient Queueing Congestion at a Hub Airport

This paper studies the relationship between the hub-and-spoke design in air transportation and the phenomenon of landing congestion in a transient environment. We model the weather, the principal source of uncertainty, as a Markov or semi-Markov process, and we treat arrivals as time-varying but deterministic. We develop a recursive algorithm for predicting transient queueing delays. To test ou...

Models and Methods for Analyzing Internet Congestion Control Algorithms

Impact of Congestion on Taxi Times, Fuel Burn, and Emissions at Major Airports

Operations on the airport surface include those at the gates, the ramp areas adjoining the gates, the taxiways, and the runway system. Each component could be subject to queuing delays and is also influenced by downstream factors such as the terminal airspace. On the basis of observations by Idris (4), four regions were identified on the surface where queues primarily form during the departure ...

Transient Queueing Analysis

T exact distribution of the nth customer’s sojourn time in an M/M/s queue with k customers initially present is derived. Algorithms for computing the covariance between sojourn times for an M/M/1 queue with k customers present at time 0 are also developed. Maple computer code is developed for practical application of transient queue analysis for many system measures of performance without regar...