Aircraft trajectory optimization with dynamic input variables

Lindner, Mirko; Rosenow, Judith; Fricke, Hartmut

doi:10.1007/s13272-019-00430-0

Cited by 13 publications

(10 citation statements)

References 16 publications

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“…The NASA TASAR combines lateral and vertical trajectory recalculation in case of convective weather while considering surrounding air traffic [17]. Lindner et al [5] showed that periodical weather updates and a subsequent re-optimized lateral trajectory saves fuel and reduces costs by approximately 1%. Therein, the pre-flight trajectory was calculated based on the latest available GFS cycle, then hourly weather forecasts from the GFS were assumed as weather updates to re-optimize the trajectory from the aircraft position.…”

Section: In-flight Re-optimization Of Trajectoriesmentioning

confidence: 99%

“…The optimum 4D single trajectory strongly depends on the current weather conditions. In particular, wind speed and wind direction lead to a deviation between the ground-based and the aerodynamic coordinate system of the aircraft movement [3,5]. Hence, the dispatcher optimizes the trajectory considering predicted atmospheric conditions.…”

Section: Reasons For a Required Modification Of The Filed Flight Planmentioning

confidence: 99%

“…TOMATO is based on three core modules, which iteratively improve the 4D-trajectory towards the optimization target function. For a comprehensive overview, see [3,5,15,16]. Each iteration consists of the following three steps:…”

Section: Pre-flight Trajectory Optimizationmentioning

confidence: 99%

“…In [5,14], Lindner et al presented the implementation of in-flight optimization in the TOMATO core. There, the trajectory was re-optimized from the present position as soon as the hourly weather update was received.…”

Section: In-flight Optimization Within the Corridor Of Optimizationmentioning

confidence: 99%

“…Therefore, the integration of forecast uncertainties may benefit both the flight efficiency as well as the ATM planning stability. Cyclic weather updates and re-optimization of the trajectory during the flight provide the opportunity for more efficient trajectories [5]. Current ATM infrastructure projects aim to establish less restrictive flight planning capabilities through Functional Airspace Blocks and Free Route Airspaces.…”

Section: Motivation and Introductionmentioning

confidence: 99%

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In-Flight Aircraft Trajectory Optimization within Corridors Defined by Ensemble Weather Forecasts

et al. 2020

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Today, each flight is filed as a static route not later than one hour before departure. From there on, changes of the lateral route initiated by the pilot are only possible with air traffic control clearance and in the minority. Thus, the initially optimized trajectory of the flight plan is flown, although the optimization may already be based upon outdated weather data at take-off. Global weather data as those modeled by the Global Forecast System do, however, contain hints on forecast uncertainties itself, which is quantified by considering so-called ensemble forecast data. In this study, the variability in these weather parameter uncertainties is analyzed, before the trajectory optimization model TOMATO is applied to single trajectories considering the previously quantified uncertainties. TOMATO generates, based on the set of input data as provided by the ensembles, a 3D corridor encasing all resulting optimized trajectories. Assuming that this corridor is filed in addition to the initial flight plan, the optimum trajectory can be updated even during flight, as soon as updated weather forecasts are available. In return and as a compromise, flights would have to stay within the corridor to provide planning stability for Air Traffic Management compared to full free in-flight optimization. Although the corridor restricts the re-optimized trajectory, fuel savings of up to 1.1 %, compared to the initially filed flight, could be shown.

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Section: In-flight Re-optimization Of Trajectoriesmentioning

confidence: 99%

Section: Reasons For a Required Modification Of The Filed Flight Planmentioning

confidence: 99%