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66 5. if tgt alt is higher than std alt, propagate flaps of climb to std alt to all climbs from std alt to tgt alt 6. remove (and store) all climbs following acceleration sequence 7. calculate profile as modified 8. interpolate tgt CAS from tgt length and actual length of acceleration sequence a. if tgt length > actual length, use tgt CAS = max CAS 9. if an accel step passes through tgt CAS, reduce to tgt CAS 10. remove all acceleration steps above tgt CAS 11. restore climbs following acceleration sequence 12. propagate final acceleration step flaps to all climbs that follow Implementation in AEDT The preceding pseudo code is provided to guide the potential implementation by AEDT developers. It covers the procedure modification details, all else that would be needed are simple Graphical User Interface updates to allow users to specify the limited required input data, and any related updates needed to store the new procedures within the appropriate AEDT Study database. Once specified, the resultant newly customized procedures can be used to calculate flight trajectories, noise, fuel burn, and emissions without any modifications to the rest of the AEDT system. The decision on whether, how, and when to implement this functionality within AEDT is of course at the discretion of the FAA. 4 Guidance Document Overview This project included the development of a standalone guidance document to help industry navigate and use the various flight profile modeling options currently available within AEDT in addition to those proposed by this research. Within the context of this ACRP project, the focus was placed on single-airport environmental analysis. The purpose of this guidance document includes: ï· To provide a succinct, easy-to-use resource for AEDT modelers on the topic of arrival and departure profiles. ï· To provide modelers, FAA staff, and other regulators the key information about why, when, and how arrival and departure profiles should be modeled. ï· To explain the numerous profile modeling methods available in AEDT and provided as a result of ACRP 02-55. ï· To support the ACRP 02-55 research by disseminating the key findings and to make them useful to AEDT modelers of all experience levels. The anticipated users of this Guidance Document include: ï· AEDT modelers, from novices to experts, will benefit from using this guidance document. ï· FAA staff, including Environmental Protection Specialists, NEPA Project Managers, and others will gain an understanding of the modeling process. ï· EPA staff and other air quality regulators will similarly gain an understanding of the modeling process. ï· Other technical and non-technical audiences will better understand the available methods, and which ones are best suited to different types of studies. This will allow all
