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From page 37... ... 37 4.1. Introduction In support of helping airport operators to better understand the tradeoffs among aircraft noise, fuel burn, and emissions from departure track optimizations, an electronic tool was developed to help facilitate scenario assessments. Read the entire page →
From page 38... ... 38 4.2.2. Tool Structure 4.2.2.1. Read the entire page →
From page 39... ... 39 parameters within the worksheet that contains the fuel burn and emissions data summary. The fuel burn and emissions computations are conducted up to a total horizontal ground distance of 12 NM radius from the start of runway roll. Read the entire page →
From page 40... ... 40 necessary to model multi-turn noise abatement procedures, which include the NAP and direct tracks, plus two additional tracks for modeling of operations heading East and South of the airport. Runway 27 includes tracks that support both heading and fanning NAPs; these tracks include the heading NAP and direct tracks plus the tracks with West and South headings. Read the entire page →
From page 41... ... 41 level is most affected by the sum of the influences from all tracks. Figure 4-3 shows the location of the points for which noise exposure is calculated. Read the entire page →
From page 42... ... 42 as well. Comparing the two figures highlights the difference RNAV procedures can make to the dispersion pattern of aircraft following a particular flight path. Read the entire page →
From page 43... ... 43 • "4. Utilization by AC Category" – allows defining the runway and flight track utilization on the basis of aircraft category. Read the entire page →
From page 44... ... 44 characteristics of an existing aircraft within the tool's fleet in order to derive a substitute aircraft, a simpler substitution can be performed by assuming an existing aircraft is representative of another aircraft (i.e., a surrogate) Read the entire page →
From page 45... ... 45 in resolving version issues that might arise when multiple versions of the same scenario have been created in different locations without appropriate file naming management. The entry for the Name field should give a user familiar with the analyses underway at the airport a clear understanding of the context of the scenario at hand, which can help an analyst quickly differentiate among files. Read the entire page →
From page 46... ... 46 Burn, and Emissions fields allow independent setting of each parameter for every aircraft in both sets of fleets. When no reduction or increase in value is desired, the appropriate fields can be either set to zero or the cells' contents deleted. Read the entire page →
From page 47... ... Table 4-4. Fuel burn and emissions parameters. Read the entire page →
From page 48... ... 48 increases as negative values. For future aircraft/engine technologies, the surrogates are expected to have lower characteristic values resulting in positive dBChange values. Read the entire page →
From page 49... ... 49 by adopting more efficient departure procedures. If a user is interested only in determining the percentage reduction achieved by new procedures and there are no technology changes, the technology adjustment fields for fuel burn and the different pollutants can be left blank. Read the entire page →
From page 50... ... 50 table, the defined distribution is applied to all aircraft in the category. Table 4-7 describes the fields found in these two tables. Read the entire page →
From page 51... ... 51 field is provided along with data validation functionality to facilitate entering the data. Three dispersion patterns are available: (1) Read the entire page →
From page 52... ... 52 a more readily understandable format. The two sets of numbers highlight the magnitude of the change in noise output by showing how many flights of the original aircraft would have to be dropped (or added) Read the entire page →
From page 53... ... 53 • Backbone Flight Tracks and Radar-Derived Dispersion Flight Tracks: Backbone tracks and sub-tracks using flight track dispersion parameters derived from radar (NAP intermediate flight tracks not included) Read the entire page →

From page 37...

... 37 4.1. Introduction In support of helping airport operators to better understand the tradeoffs among aircraft noise, fuel burn, and emissions from departure track optimizations, an electronic tool was developed to help facilitate scenario assessments.