Efficient prediction of urban air mobility noise in a vertiport environment

Efficient calculation of urban air mobility noise footprint in a vertiport environment, considering acoustic effects of various designs, operational conditions, and environmental factors, is essential to limit the noise impact on the community at an early stage. To this purpose, the computationally efficient low-fidelity approach presented by...

The Effect of Wind Stress on Seasonal Sea-Level Change on the Northwestern European Shelf

Projections of relative sea level change (RSLC) are commonly reported at an annual mean basis. The seasonality of RSLC is often not considered, even though it may modulate the impacts of annual mean RSLC. Here, we study seasonal differences in twenty-first-century ocean dynamic sea level change (DSLC; 2081–2100 minus 1995–2014) on the...

Towards Estimation and Correction of Wind Effects on a Quadrotor UAV

In this paper the problem of estimation and correction of wind effects on a quadrotor UAV, without using wind sensors, is discussed. A large body of research addresses the effects of wind on a quadrotor, however most of them consider it only as a disturbance in their control loop and, for this reason, they solved the problem compensating for the...

Verticale structuur van de wind- en dichtheidsgedreven reststroom in de Nederlandse kustzone

kan de verticale structuur van de reststroomcirculatie in de kustzone van de Noordzee verklaard worden uit effecten teweeggebracht door de wind en door horizontale dichtheidsverschillen (veroorzaakt door de toevoer van Rijn-water). Informatie over de verticale structuur van de reststroom is van groot belang voor kennis omtrent verspreiding van...

Investigation on MLS approach path interception and transition techniques: part I: fast-time computer simulations

MLS provides the possibility to define non-straight-in approach paths and to use more advanced interception procedures. From an ATC point-of-view it became necessary to structure this capability as a prerequisite in order to make a realistic use of the potential capabilities of MLS. Four different MLS approach path interception procedures were...