Agent-Based Simulation of Off-Nominal Conditions During a Spiral Descent (NextGen Vehicle NRA)

Hedrick, Matthew; Kelley, R W

doi:10.2514/6.2009-7046

Cited by 3 publications

References 3 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

Curvilinear Approach to Landing

Pieniążek,

Cieciński

2024

Transactions on Aerospace Research

View full text Add to dashboard Cite

The article describes the problem of controlling an aircraft control when performing a landing on a curvilinear trajectory. The adoption of a curvilinear approach trajectory allows reducing the impact of air traffic on the areas adjacent to the airport. Performing the correct approach on the curvilinear path requires support. For the correct execution of the landing manoeuvre on the curvilinear track, it is necessary to establish reference points so that the repeatability of the manoeuvre is ensured, especially in the case of landing more than one aircraft at the same time. In the following parts, the landing control system is presented. Particularly carefully presented is the issue of performing tests of the designed control system, which in the case of the aircraft control system during the approach to landing must be extremely thoroughly verified. The test plan included both verification the correctness of the adopted control laws and their robustness to interference occurring as a result of atmospheric air streams.

show abstract

Curvilinear Approach to Landing

Pieniążek,

Cieciński

2024

Transactions on Aerospace Research

View full text Add to dashboard Cite

show abstract

Airborne Technology For Advanced Vehicle Operations In The Next Generation ATS.

Weber

2009

9th AIAA Aviation Technology, Integration, and Operations Conference (ATIO)

View full text Add to dashboard Cite

Flyover Noise Measurements of a Spiraling Noise Abatement Approach Procedure

Bertsch

Looye

Anton

et al. 2010

48th AIAA Aerospace Sciences Meeting Including the New Horizons Forum and Aerospace Exposition

View full text Add to dashboard Cite

DLR is investigating alternative low-noise approach procedures. One such procedure involves approaching the airport at a considerably higher altitude compared with standard landing trajectories, followed by a spiraling descent (helix flight path) shortly before the runway threshold. In this way, high ground noise levels by approaching aircraft are dislocated away from the common approach path and concentrated in the area near the helix path, i. e. in direct vicinity of the airport. Ground noise levels along the entire flight path prior to the helix are significantly reduced. The effectiveness of this procedure, referred to as Helical Noise Abatement Procedure (HeNAP), has been quantified by means of computational simulation analyses. These analyses also focused on aspects such as increased fuel burn and the occurrence of multiple noise events below the helix. In June 2009 a new DLR autopilot especially capable of tracking curved flight path trajectories was flight tested. Three HeNAPs were included in the flight plan, as well as standard and steep landing approaches. In addition, dedicated fly-over noise measurements were organized, supported by RWTH Aachen University. Twelve ground microphones have been installed along the common approach path and the helical flight segment. Despite adverse wind conditions at the only available test day, the measured data confirm the predicted noise dislocation effects. High noise levels have been limited to observer locations around the helix. DLR noise prediction methods have been compared with the experimental data. Predicted trends and noise dislocation effects are in good agreement with the measurements whereas the absolute numerical values show discrepancies. The flight test was closely accompanied by a R&D member of DFS to study the impact of spiraling procedures on ATM integration and air traffic controller workload, e. g. increased interaction with the pilots. Obviously, a spiraling approach procedure would not be implemented into the existing air traffic scenario with its common approach paths and highly frequented airports. The operational and economic environment still need more detailed investigation. Helical approaches become more feasible for implementation at small, low-frequented regional airports or during night hours to avoid possible noise related curfews.

show abstract

Agent-Based Simulation of Off-Nominal Conditions During a Spiral Descent (NextGen Vehicle NRA)

Cited by 3 publications

References 3 publications

Curvilinear Approach to Landing

Curvilinear Approach to Landing

Airborne Technology For Advanced Vehicle Operations In The Next Generation ATS.

Flyover Noise Measurements of a Spiraling Noise Abatement Approach Procedure

Contact Info

Product

Resources

About