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Contents: Log Angeles Delay Experiments; Distribution of Heavy Departures (1978 Demand); Los Angeles Stage 2 Delay Experiments; Summary of Experiment Results for Total Delays and Travel Times; Comparison of Experiments (Improvements), and Summary of Annual Delays.
There are three basic configurations (for the airport) selected for study by the Los Angeles Task Force. All the experiments considered in the technical plan can be performed using one of the configurations. The variation of the input (such as runway assignments for arrivals and departures) can control the experiment to reflect the desired conditions of the test.
Enclosed is data package No. 5 for review by the Task Force members. Data package No. 4 has been reviewed by the Task Force at the meeting in August 1979. All comments have been incorporated into the demand schedules presented in this data package. Estimates of yearly totals for passenger enplanements and aircraft operations are included. This data package is intended as a reference for Task Force members during the review of the results of Stage 1 experiments presented in data package No. 6. This data package encompass the following topics: Los Angeles Delay Experiments: 1978, 1982, 1987 Demand with Class Percentages; Analysis of Yearly Totals for Passenger and Aircraft Operations, and Class of Runway Demand Distributions for Arrivals and Departures.
Contents: Los Angeles Delay Experiments; 1978, 1982, 1987 Demand with Class Percentages; Analysis of Yearly Totals for Passenger and Aircraft Operations; Distribution Applied to Demand; Class and Runway Demand Distribution for Arrival and Departures; and Experimental Design for Combined Stages 1 and 2.
This report contains the results of experiments nos. 35, 36 and 37 requested by the Task Force to study delays after construction is completed on either runway 25R (VFR and IFR weather) or runway 25L (IFR weather). Also, a comparison of the traffic counts for the first Friday in August of 1978 and 1979.
This report is data package 7 for review by the Task Force members. The Stage 1 experiments have been re-worked since the last meeting in November and reflect the latest comments of the group. Attachment A is a list of the Stage 1 and Stage 2 experiments. The Stage 1 experiments (attachment B) are arranged in sets to illustrate various comparisons requested by the Task Force members. VRF and IFR weather conditions have been separated along with each configuration (westerly, easterly, and night time operations). Each experiment contains a description of the objective, the runway configuration, the related experiments and a summary of the results. A link node diagram is included to illustrate the airfield changes noted in the experiment.
The Stage 1 experiments (Attachment C) are arranged in sets to illustrate various comparisons requested by the Task Force members. VRF and IFR weather conditions have been separated along with each configuration (westerly, easterly and night time operations). Each experiment contains a description of the objective the runway configuration, the related experiments and a summary of the results. A link mode diagram is included to illustrate the airfield changes noted in the experiment. A plot of the comparison data is provided at the end of each set of experiments. The Los Angeles Stage 2 Delay Experiments are summarized in Attachment D of this data package. Link mode diagrams are included which depict the airport layout for the experiment.
Our approach was to conduct simulations for each proposed change beginning with the insertion of a size minute gap for departures, with existing operating conditions, then eliminate departure crossovers and adjust the approach speed along with the reduction of present day separation standards, etc. The presentation of the results are limited to an extreme case where all the assumptions are inserted into the simulation with the exception of scheduling the demand to the time permitted for the desired operation and excluding general aviation. Each simulation attempt resulted in a backlog of departures (nearly 150 operations) which clogged the simulation model storage and choked off the normal handling of arrivals and departures. Simple stated, the suggested expansion of the night time operation into the day time period under the assumed operating conditions did not produce enough departure capability to handle the airport demand. (The simulation model was run using a single random number seed to limit the cost of running the computer. Additional simulations can be performed with ten replications and increased model storage capacity.).