Development of a sabot design tool for aeroballistic range testing

Kafdağlı, Karaca Efe
The aim of this thesis is to investigate the general design and analysis principles of sabots and to develop a sabot design tool. Structures which support and align the models in gun bore, and separate without disturbing the flight path of models are called sabots. In the scope of this study, structurally critical regions and loads acting on sabots due to acceleration in the gun are determined. To calculate the loads acting and to size the sabots, approximate relations are derived by the help of strength of materials approach and finite element solutions. Conventional sabots are investigated and new sabot geometries are designed to resist high accelerations. To achieve the desired test velocity without affecting the stability of the model is the main objective. Sabots should be as light as possible, to reach the desired velocity with minimum inertial load, in other words minimum gun chamber pressure. To obtain the less weight sabot geometry with enough strength to resist the loads acting, a computer tool is developed. Structural analyses are automatically performed by the help of the sabot design tool. The advantage of the design tool is to reduce the design engineer’s work time spent for routine analyses processes. The output of the tool, which is sabot geometry, should be evaluated as a result of preliminary design process, and can be used as an input for detailed design process. Detailed geometric modifications required for production can be applied on the tool output, and final product can be manufactured reliably and in the shortest possible time.


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Şenelt, Engin; Alemdaroğlu, Hüseyin Nafiz; Department of Aerospace Engineering (2010)
The aim of this study is to describe the conceptual design, performance analysis to validate the design and manufacturing steps of Middle East Technical University Tactical Unmanned Air Vehicle (METU TUAV). The system requirements are adopted from a market study and assumed as is. Utilizing competitor search and conceptual design methodology, the rough parameters of the aircraft are defined and a performance analysis is conducted to validate the requirements. After the design team is content that the design...
Development of a closely coupled approach for solution of static and dynamic aeroelastic problems
Başkut, Erkut; Seber, Güçlü; Department of Aerospace Engineering (2010)
In this thesis a fluid-structure coupling procedure which consists of a commercial flow solver, FLUENT, a finite element structural solver, MSC/NASTRAN, and the coupling interface between the two disciplines is developed in order to solve static and dynamic aeroelastic problems. The flow solver relies on inviscid Euler equations with finite volume discretization. In order to perform faster computations, multiple processors are parallelized. Closely coupled approach is used to solve the coupled field aeroela...
Structural design, analysis and composite manufacturing applications for a tactical unmanned air vehicle
Soysal, Sercan; Kayran, Altan; Department of Aerospace Engineering (2008)
In this study structural design, analysis and composite manufacturing applications for a tactical UAV, which was designed and manufactured in Aerospace Engineering Department of Middle East Technical University (METU), is introduced. In order to make an accurate structural analysis, the material and loading is modeled properly. Computational fluid dynamics (CFD) was used to determine the 3D pressure distribution around the wing and then the nodal forces were exported into the finite element program by means...
Discrete fiber angle and continuous fiber path optimization in composite structures
İnci, Hasan; Kayran, Altan; Department of Aerospace Engineering (2012)
Fiber orientation angle stands out as one of the most effective design variables in the design optimization of composite structures. During the manufacturing of the composite structures, one can change the fiber orientation according to the specific design needs and constraints to optimize a pre-determined performance index. Fiber placement machines can place different width tows in curvilinear paths resulting in continuous change of the fiber orientation angle in a layer of the composite structure. By allo...
Investigation of the effect of semi-geodesic winding on the vibration characteristics of filament wound shells of revolution
İbrahimoğlu, Can Serkan; Kayran, Altan; Department of Aerospace Engineering (2010)
In this thesis, the effect of semi-geodesic winding on the free vibration characteristics of filament wound composite shells of revolution with variable radii of curvature is studied. The analysis is performed by a semi-analytical solution method which is based on the numerical integration of the finite exponential Fourier transform of the fundamental shell of revolution equations. The governing equations for the free vibration analysis are initially obtained in terms of fundamental shell variables, and the...
Citation Formats
K. E. Kafdağlı, “Development of a sabot design tool for aeroballistic range testing,” M.S. - Master of Science, Middle East Technical University, 2006.