The Aircraft Departure Optimizer (ADO) - A performance-tailored approach to noise abatement departure procedures

Abstract

The Aircraft Departure Optimizer (ADO), developed by the German Aerospace Center (DLR), seeks to reduce community noise by tailoring departure procedures to aircraft performance, environmental conditions, and population distribution. Unlike fixed NADP-1 and NADP-2 profiles, ADO dynamically optimizes cutback and acceleration heights, with noise impacts evaluated using Empa's sonAWARE model. Initial A320 simulator trials with twelve pilots indicated measurable noise benefits on one route, while others showed no clear improvements, underscoring the dependence on geography and population distribution. A usability study found that the Electronic Flight Bag application integrated well into pilot workflows without increasing workload. Recent real-world A330 trials are further assessing scalability for wide-body operations and validating the concept under airline conditions. The results highlight broader issues worth exploring. Therefore, questions such as whether acceleration and cutback heights should evolve toward more aircraft- and weight-specific settings at individual airports and how far departure procedures can or should move away from their current way of standardization.