Group for Aeronautical Research and Technology in Europe

Development of a Design Procedure for Aeronautical Structures Based on Reliability

In this paper, an approach to aeronautical structural design based on reliability analysis is presented. In this way, the concept of level of safety is discussed and methods of its calculation using statistical data are described. Based on the concept of level of safety, a design procedure is proposed. In order to validate this design procedure, two design cases are studied. In the first case s...

A Comparison Study on Various Finite Element Models of Riveted Lap Joint by the Use of Dynamic Model Updating

Till now, various models have been proposed in literature to simulate the behavior of riveted structures. In order to find the most accurate analytical method in modeling the dynamic behavior of riveted structures, a comparison study is performed on several of these models, in this research. For this purpose, experimental modal analysis tests are conducted on a riveted plate to verify the effic...

Heterogeneity of European DRG Systems and Potentials for a Common Eurodrg System; Comment on “Cholecystectomy and Diagnosis-Related Groups (DRGs): Patient Classification and Hospital Reimbursement in 11 European Countries”

Diagnosis-Related Group (DRG) systems across Europe are very heterogeneous, in particular because of different classification variables and algorithms as well as costing methodologies. But, given the challenge of increasing patient mobility within Europe, health systems are forced to incorporate a common patient classification language in order to compare and identify similar patients e.g. for ...

Investigation of Effect of Accumulation Layer Thickness of ENZ material on Electro-Absorption Modulator

In this paper, the performance of an optical modulator based on indium tin oxide is investigated at telecommunication wavelength for different accumulation thickness. The plan of metal-oxide-semiconductor is utilized to change the carrier concentration at indium tin oxide-hafnium oxide interface. An optical mode solver based finite element method has been used to calculate the basic parameters ...

Existence of infinitely many solutions for coupled system of Schrödinger-Maxwell's equations

A Centennial Review of Sub-sonic Transport Aircraft

From Wright Brothers 1903 to present day 2003, aeronautical technology has made a profound progress. This paper demonstrates the outcome of this progress in weight, wing area, and engine thrust in three categories of transport aircraft of short to long range, regional jets, and turbo-prop commuter aircraft. Also the paper includes those aircraft with distinct jump in aeronautical technology. Fe...