Shape change and ablation modelling of thermal protection systems of high-speed aerospace vehicles

Ertürk, Görkem


Electrical impedance tomography using induced and injected currents
Gençer, Nevzat Güneri; Kuzuoğlu, Mustafa (IOP Publishing, 1992-01-01)
A two-dimensional forward problem formulation is introduced for electrical impedance tomography (EIT) using induced currents. The forward problem is linearised around a certain resistivity distribution and the inverse problem is formulated as a solution of a linear system of equations. Sensitivity of boundary measurements to resistivity variations arc analysed for spatially uniform, linear and quadratic fields. The formulation, however, is suitable for studying the effects of a general magnetic field applie...
Epileptic Seizures-Induced Structural Changes in Rat Spine Bone Tissues: FTIR Microspectroscopic and Chemometric Study
Garip, Sebnem; ŞAHİN, DENİZ; Severcan, Mete; Severcan, Feride (2013-01-29)
Infrared Spectroscopy Offers Tremendous Potential in Cancer Diagnosis
Severcan, Feride; Abbas, Sherif; Yonar, Dilek; Emri, Salih (2019-02-15)
Shape recognition using attributed string matching with polygon vertices as the primitives
Kaygin, S; Bulut, Mehmet Mete (2002-01-01)
Attributed string matching has been utilized for polygon matching in various applications, in which line segments are the primitives. Adding a merge operator avoids the segmentation inconsistencies due to the noisy images or distorted shapes, however it is computationally expensive. In this paper, the vertices of the polygons are suggested as the primitives of the attributed strings. Deletion and insertion of a vertex corresponds to merging two consecutive line segments and splitting a line segment, respect...
Autonomous spacecraft rendezvous and docking on safe trajectories
Büyükkoçak, Ali Tevfik; Tekinalp, Ozan; Department of Aerospace Engineering (2018)
In this thesis, rendezvous and docking operation of a pair of low earth orbit spacecraft is addressed. Two different sets of equations for the nonlinear orbital relative motion of spacecraft are derived and simulation codes for this motion are developed. First, Hill-Clohessy-Wiltshire (HCW) equations are used in chaser-target spacecraft configuration with Model Predictive Control (MPC) algorithm including some safety considerations such as debris avoidance, direction of approach constraint and slow impact r...
Citation Formats
G. Ertürk, “Shape change and ablation modelling of thermal protection systems of high-speed aerospace vehicles ,” M.S. - Master of Science, Middle East Technical University, 2003.