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Verwertbare Ergebnisse
Aircraft performance model: One of the main goals of ARAMIS is to analyze and adapt an aircraft performance model for use within tools for accurate 4D planning, guidance and control. The phase of flight considered in ARAMIS starts at the initial approach fix and ends at the runway threshold. One of the most important issues within this phase of flight is the complexity due to the variety in throttle and flap settings depending on procedures used by different airports, airlines, aircraft types and wind conditions.
First the requirements for such an aircraft performance model have been studied and an inventory and classification of existing aircraft performance models has been made. It was concluded that there are two classes of aircraft models which have possibilities for use within the ARAMIS project, i.e. the class of Flight Mechanical Point-Mass models (know as class B models) and the class of Parametric models (known as class C models). Both the selected aircraft performance model and its input data, i.e. the aircraft performance data, must satisfy the relevant requirements listed during the study.
The second part of this work consists of a selection, adaptation and evaluation of an aircraft performance model. In addition, some recommendations for adaptation of the existing aircraft performance database Base of Aircraft Data (BADA) are given.
Weather model: ARAMIS has produced a nowcasting model, derived from WAFTAGE, which can significantly reduce the errors in the NWP forecasts currently provided to aviation users in the terminal area. In conclusion, the WAFTAGE model could be implemented in a terminal area to provide gridded nowcasts of winds (and temperatures) every 15 minutes provided an adequate source of observations becomes available either from aircraft (via an appropriate air to ground data link) or from other sensors such as a network of strategically placed profilers.
Demonstration: The project is developing a set of computer programs which aim to demonstrate the interest of the studied models, so their usability in a ground-based tool to assist controllers. The main part of these tools is a trajectory predictor which is based on the aircraft model B and on the on-line weather nowcasts to provide accurate estimated time of arrivals.
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