Mechanistic evaluation of rigid airport pavements

Güçbilmez, Emin


A layerwise approach to modeling piezolaminated plates
Ertürk, Cevher Levent; Tekinalp, Ozan; Department of Aerospace Engineering (2005)
In this thesis, optimal placement of adhesively bonded piezoelectric patches on laminated plates and the determination of geometry of the bonding area to maximize actuation effect are studied. A new finite element model, in which each layer is considered to be a separate plate, is developed. The adhesive layer is modeled as a distributed spring system. In this way, relative transverse normal and shear motion of the layers are allowed. Effect of delamination on the adhesive layer stresses is also studied and...
Numerical and experimantal analysis of flapping motion in hover, application to micro air vehicles
Kurtuluş, Dilek Funda; Alemdaroğlu, Hüseyin Nafiz; Department of Aerospace Engineering (2005)
The aerodynamics phenomena of flapping motion in hover are considered in view of the future Micro Air Vehicle applications. The aim of this work is to characterize the vortex dynamics generated by the wing in motion using direct numerical simulation and experimental analysis then to propose a simplified analytical model for prediction of the forces in order to optimize the parameters of the motion leading to maximum force. A great number of cases are investigated corresponding to different angles of attack,...
Design and performance analysis of a variable pitch axial flow fan for Anakara wind tunnel
Yalçın, Levent; Akmandor, İbrahim Sinan; Department of Aerospace Engineering (2006)
In this study, a variable pitch axial flow fan is designed and analysed for Ankara Wind Tunnel (AWT). In order to determine the loss caharacteristics of AWT, an algorithm is developed and the results are validated. Also some pressure and velocity measurements are made at the fan section to find the losses experimentally. After completion of the fan design, analyses are made at different volumetric flowrates and blade angles including the design point and the performance characteristics of the fan are obtain...
A tool for designing robust autopilots for ramjet missiles
Kahvecioğlu, Alper; Alemdaroğlu, Hüseyin Nafiz; Department of Aerospace Engineering (2006)
The study presented in this thesis comprises the development of the longitudinal autopilot algorithm for a ramjet powered air-to-surface missile. Ramjet Missiles have short time-of-flight, however they suffer from limited angle of attack margins due to poor operational-region characteristics of the ramjet engine. Because of such limitations and presence of uncertainties involved, Robust Control Techniques are used for the controller design. Robust Control Techniques not only provide an easy limitation/uncer...
Typological residential urbanism: an alternative analysis of the TOKİ housing production as a dominant type
Parlak, Neris; Cengizkan, Ali; Department of Architecture (2015)
Housing production in Turkey has increased enormously in recent years. Quality of the urban form as a result of this housing production is extremely significant since it directly affects the quality of Turkish cities. This thesis aims to draw attention to the potential of the concept of typology on evaluating the quality of urban form of housing environments. Thus, the thesis attempts to test the potential by carrying out a typological analysis of the housing production of TOKİ, which is one of the three ma...
Citation Formats
E. Güçbilmez, “Mechanistic evaluation of rigid airport pavements,” Ph.D. - Doctoral Program, Middle East Technical University, 1992.