Modeling and verification of a missile launcher system

Isik, C.
Ider, S. K.
Acar, B.
The launcher models used in most of the previous studies have few degrees of freedom that cannot possibly capture many important motion characteristics. In this work, a flexible multibody model of a missile launcher system is built. The fixed, azimuth and elevation platforms and the launching pod are modeled as flexible bodies. Both the normal vibration modes and constraint modes are considered. Modes that do not contribute significantly to the total strain energy are eliminated to reduce simulation time. The joint flexibility effects are also included to the model by spring-damper elements. For the plume force and the motor thrust, experimental data are utilized. The forces transmitted to the base of the launcher system and the azimuth platform displacements during the launch are determined. Launching tests show good conformity with the simulation results, thus revealing that the developed model provides a realistic representation of the system.


Remote ionization by a short pulse laser beam propagating in the atmosphere
Yedierler, Burak (AIP Publishing, 2008-07-01)
Self-focusing of high power, short laser pulses is considered for the purpose of identifying physical parameters that allow a remotely controllable ionization in the atmosphere. The propagation equation including diffraction, group velocity dispersion, Kerr nonlinearity and bound electrons effects is derived. A Lagrange density describing the propagation equation depending on a general pulse amplitude is presented for a propagation regime in the absence of ionization and plasma defocusing. Lagrange equation...
Modeling and simulation of shaped charges
Gürel, Eser; Sert, Cüneyt; Department of Mechanical Engineering (2009)
Shaped charges are explosive devices with a high penetration capability and are used for both civilian and military purposes. In civilian applications shaped charge devices are used in demolition works, oil drilling and mining. In the military applications, shaped charges are used against different kinds of armors, primarily as anti-tank devices. This thesis work involves the modeling and simulation of shaped charge devices, with the focus being on anti-tank warhead design. Both numerical simulation and ana...
Doyum, Ahmet Bülent; NABEL, E (Elsevier BV, 1991-06-01)
In order to produce radiographs with controlled image quality, among other factors, it is important to know and to be able to monitor any changes in the actual size of the radiation source. This article describes a simple and practical method for the determination of source sizes which can be conveniently applied in any radiographic testing shop or even in the field. The use of a microdensitometer often needed for focal spot size measurements is avoided.
Nonlinear longitudinal compression of short laser pulses in the atmosphere
Yedierler, Burak (AIP Publishing, 2009-05-01)
Propagation of short and intense laser beams in the atmosphere is considered for the purpose of identifying the temporal compression. The conditions and validity of linear and nonlinear compression theories are discussed. The effects of chirping and pulse power in the preionization regime are deliberated. The fact that the linear theory cannot explain the pulse compression in the atmosphere is presented.
Development of a multigrid accelerated euler solver on adaptively refined two- and three-dimensional cartesian grids
Çakmak, Mehtap; Aksel, Mehmet Haluk; Department of Mechanical Engineering (2009)
Cartesian grids offer a valuable option to simulate aerodynamic flows around complex geometries such as multi-element airfoils, aircrafts, and rockets. Therefore, an adaptively-refined Cartesian grid generator and Euler solver are developed. For the mesh generation part of the algorithm, dynamic data structures are used to determine connectivity information between cells and uniform mesh is created in the domain. Marching squares and cubes algorithms are used to form interfaces of cut and split cells. Geome...
Citation Formats
C. Isik, S. K. Ider, and B. Acar, “Modeling and verification of a missile launcher system,” PROCEEDINGS OF THE INSTITUTION OF MECHANICAL ENGINEERS PART K-JOURNAL OF MULTI-BODY DYNAMICS, pp. 100–107, 2014, Accessed: 00, 2020. [Online]. Available: