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Real-time Wind Profile Estimation using Airborne Sensors

In 't Veld, A.C. (author), De Jong, P.M.A. (author), Van Paassen, M.M. (author), Mulder, M. (author)

Wind is one of the major contributors to uncertainty in continuous descent approach operations. Especially when aircraft that are flying low or idle thrust approaches are issued a required time of arrival over the runway threshold, as is foreseen in some of the future ATC scenarios, the on-board availability of both dependable and accurate wind...

conference paper 2011

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Adaptive Optimizing Nonlinear Control Design for an Over-actuated Aircraft Model

Van Oort, E.R. (author), Sonneveldt, L. (author), Chu, Q.P. (author), Mulder, J.A. (author)

In this paper nonlinear adaptive flight control laws based on the backstepping approach are proposed which are applicable to over-actuated nonlinear systems. Instead of solving the control allocation exactly, update laws for the desired control effector signals are defined such that they converge to the optimal solution. Stability and...

conference paper 2011

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Validating the Multidimensional Spline Based Global Aerodynamic Model for the Cessna Citation II

De Visser, C.C. (author), Mulder, J.A. (author)

The validation of aerodynamic models created using flight test data is a time consuming and often costly process. In this paper a new method for the validation of global nonlinear aerodynamic models based on multivariate simplex splines is presented. This new method uses the unique properties of the multivariate simplex splines, a recent type of...

conference paper 2011

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Phase Coherence Zones in Flight Simulation

Jonik, P.M. (author), Valente Pais, A.R. (author), Van Paassen, M.M. (author), Mulder, M. (author)

In flight simulation detailed knowledge of human motion perception is crucial. Phase differences between inertial and visual motion introduced by motion filters might have negative effects on the fidelity of flight simulation. This study investigated human visual- vestibular phase-error detection. An experiment was conducted to measure the...

conference paper 2011

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Passivity Analysis for Non-Linear, Non-Stationary Entry Capsules: Rotational Motion

Mooij, E. (author)

To analyze the passivity of non-linear, time-varying systems we study an entry capsule that enters the atmosphere in a lift-down configuration (i.e., a bank angle larger than 90º) to avoid skipping flight, and which is controlled by a Reaction Control System only. Deriving the passivity conditions for rotational motion, and evaluating these...

conference paper 2011

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Creating a Simulation Environment to Analyze Benefits of Real-time Taxi Flow Optimization Using Actual Data

Koeners, G.J.M. (author), Rademaker, R.M. (author)

To make optimal use of the available runway and taxiway infrastructure and to prevent the workload of the controllers becoming a limitation, a route-planning function that generates routes automatically is needed. The uncertainty in the taxi process is an important disturbance in today’s surface operations. To allow for deconfliction in the...

conference paper 2011

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Continuous Descent Approaches with Variable Flight-Path Angles under Time Constraints

Sopjes, R. (author), De Jong, P.M.A. (author), Borst, C. (author), Van Paassen, M.M. (author), Mulder, M. (author)

In order to reduce noise nuisance around Schiphol Airport, a Continuous Descent Approach procedure was introduced in the late ’90s. Unfortunately, because unpredictable individual aircraft behavior lead to increased landing intervals for this procedure, it is currently only applied during night time operations. Time-of-Arrival control in the...

conference paper 2011

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Verified Interval Orbit Propagation in Satellite Collision Avoidance

Römgens, B.A. (author), Mooij, E. (author), Naeije, M.C. (author)

Verified interval integration methods enclose a solution set corresponding to interval initial values and parameters, and bound integration and rounding errors. Verified methods suffer from overestimation of the solution, i.e., non-solutions are also included in the solution enclosure. Two verified integration methods, interval Taylor-series and...

conference paper 2011

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Using the Solution Space Diagram in Measuring the Effect of Sector Complexity During Merging Scenarios

Abdul Rahman, S.M.B. (author), Van Paassen, M.M. (author), Mulder, M. (author)

When designing Air Traffic Control (ATC) sectors and procedures, traffic complexity and workload are important issues. For predicting ATC workload, metrics based on the Solution Space Diagram (SSD) have been proposed. This paper studies the effect of sector design on workload and SSD metrics. When considering the SSD in evaluation of a sector,...

conference paper 2011

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A Time-Space Diagram as Controller Support Tool for Closed Path Continuous Descent Operations

De Leege, A.M.P. (author), In 't Veld, A.C. (author), Mulder, M. (author), Van Paassen, M.M. (author)

Tactical control during a closed-path Continuous Descent Operation stops the aircraft from following its optimized descent. To mitigate tactical control, air traffic controllers apply arbitrary large spacing buffers to account for the unpredictability of the aircraft trajectory from the controller’s point of view. A controller support tool is...

conference paper 2011

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Effect of cruise altitude and alternative aviation fuels on radiative forcing

Snijders, T.A. (author), Melkert, J.A. (author)

The radiative forcing caused by the emissions of jet aircraft is calculated using data from an aircraft performance model. Data from the performance model is needed to calculate the emissions of the aircraft. The sensitivity function and lifetime of the emitted gasses and particles are used to calculate the integrated radiative forcing of the...

conference paper 2011

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Numerical Study on Control of Tollmien-Schlichting Waves Using Plasma Actuators

Kotsonis, M. (author), Giepman, R. (author), Veldhuis, L.L.M. (author)

A numerical investigation on the use of plasma actuators for transition control is presented. The numerical framework involves the solution of the full unsteady 2D incompressible Navier Stokes equations using a finite volume formulation. The set of equations is formulated by solving for the perturbations in the flow while a mean laminar boundary...

conference paper 2011

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Adjoint Optimization of a Wing Using the CSRT Method

Straathof, M.H. (author), Van Tooren, M.J.L. (author)

This paper will demonstrate the potential of the Class-Shape-Refinement-Transformation (CSRT) method for aerodynamically optimizing three-dimensional surfaces. The CSRT method was coupled to an in-house Euler solver and this combination was used in an optimization framework to optimize the ONERA M6 wing in transonic conditions. The gradients of...

conference paper 2011

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A two-parameter method for eN transition prediction

Van Ingen, J.L. (author), Kotsonis, M. (author)

A correction to the eN method for transition prediction, that at present is in use at Delft University, is developed and tested. The existing method is based on solutions of the Falkner-Skan similar boundary layer equation without suction or blowing. The correction is based on additional solutions of this equation with suction and blowing. For...

conference paper 2011

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Aircraft Noise Simulation for a Virtual Reality Environment

Arntzen, M. (author), Van Veen, T.A. (author), Visser, H.G. (author), Simons, D.G. (author)

Aircraft noise annoyance predictions based on traditional tools lack fidelity when modelling a single aircraft flyover. For evaluating annoyance of new procedures, different aircraft types or changing atmospheric conditions, a new modelling approach is necessary. A research effort has been initiated to develop a toolchain that links each of the...

conference paper 2011

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Environmental Impact Evaluation of Aircraft at System-of-Systems Level

Schroijen, M.J.T. (author), Van Tooren, M.J.L. (author), Voskuijl, M. (author), Curran, R. (author)

Next generations of civil transport aircraft will need to be evaluated not only against their behaviour as an aircraft system but also as a part of the larger air transport system. In addition to this are the sustainability issues related to for instance noise and emissions, represented by environmental impact. Both issues mandate the...

conference paper 2011

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Topology Design of Pressure Adaptive Honeycomb for a Morphing Fowler Flap

Scheepstra, J. (author), Vos, R. (author), Barrett, R. (author)

A new method for designing a morphing Fowler flap based on pressure-adaptive honeycomb is detailed. Pressure adaptive honeycomb has been shown to be able to induce gross camber deformations in airfoil sections, such as a flap. However, due to the large amount of design variables the integration of the honeycomb as a distributed actuator in a...

conference paper 2011

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On the development of a heuristic routing application for the automatic wire harness design in the aircraft

Zhu, Z. (author), Van Tooren, M.J.L. (author), Van der Elst, S.W.G. (author)

Based on the use of dedicated software tools, Knowledge Based Engineering (KBE) techniques are able to capture and reuse engineering product and process knowledge to reduce time and cost during product development. In this paper a conceptual design of an automatic wire harness routing application is proposed, based on KBE. As the core of this...

conference paper 2011

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Model Reduction in Co-Rotated Multi-Body Dynamics Based on the Dual Craig-Bampton Method

Weerathunge Kadawathagedara, S.T. (author), Rixen, D.J. (author)

A new reduction method for dynamical analsis of multi-body systems is presented in this paper. It fundamentally differs from the ones previously published in the way kinematical constraints are handled. Our approach is based on component mode synthesis, but the specificity of articulated mechanism, in which components are assembled through...

conference paper 2011

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Design of Fiber-steered Variable-stiffness Laminates Based on a Given Lamination Parameters Distribution

Van Campen, J.M.J.F. (author), Kassapoglou, C. (author), Gürdal, Z. (author)

Mechanical properties of fiber-reinforced laminated composite materials are directionally dependent. Contemporary laminated composite design aims to make effective use of these directional properties by means of stacking sequence design, selecting the fiber orientation angle of each ply from a predefined set. Automated fiber-placement (AFP)...

conference paper 2011