Autolanding Strategies for a Fixed Wing UAV in Adverse Atmospheric Conditions

Autopilot and guidance design for a Mini ROV (Remotely Operated Underwater Vehicle Cevher, Fırat Yılmaz; Leblebicioğlu, Mehmet Kemal; Department of Electrical and Electronics Engineering (2012) This thesis consists of a mathematical model, autopilot and guidance design of a mini ROV (Remotely Operated Underwater Vehicle) and investigates the effects of environmental forces (ocean currents etc.) on the guidance algorithms. First of all, a non-linear 6 degrees-of-freedom (DOF) mathematical model is obtained. This model includes hydrodynamics forces and moments. There is no exact calculation method for hydrodynamic coefficients; however strip theory and results of computational fluid dynamics (CFD) a...
Autopilot and guidance for anti-tank imaging infrared guided missiles Özcan, Ali Erdem; Leblecioğlu, Kemal; Department of Electrical and Electronics Engineering (2008) An anti-tank guided missile is a weapon system primarily designed to hit and destroy armored tanks and other armored vehicles. Developed first-generation command-guided and second-generation semi-automatic command guided missiles had many disadvantages and lower hit rates. For that reason, third generation imaging infrared fire-and-forget missile concept is very popular nowadays. In this thesis, mainly, a mathematical model for a fire-and-forget anti-tank missile is developed and a flight control autopilot ...
Autopilot design and guidance control of ulisar uuv (unmanned underwater vehicle) Isıyel, Kadir; Leblebicioğlu, Mehmet Kemal; Department of Electrical and Electronics Engineering (2007) Unmanned Underwater Vehicles (UUV) in open-seas are highly nonlinear with system motions. Because of the complex interaction of the body with environment it is difficult to control them efficiently. Linearization is applied to system in order to design controllers developed for linear systems. To overcome the effects of disturbances, a mathematical model which will compensate all disturbances and effects of linearization is required. In this study first a mathematical model is formed wherein the linear and ...
Autopilot and guidance algorithms for infrared guided misiles Kılıç, Kayhan Çağlar; Ünver, Baki Zafer; Department of Electrical and Electronics Engineering (2006) Guided missiles are among the most effective threats against air platforms. Aircraft and helicopter losses in the last decades were mostly due to guided missiles, 70% of which were infrared guided missiles. Today, there are as many as 500,000 shoulder-fired missiles in military arsenals around the world, whose guidance algorithms enable them to track the desired trajectories very precisely. In this thesis, main focus is on defining infrared missile guidance and control algorithms in order to study on variou...
Flight control of a tilt duct uav with emphasis on the over actuated transition flight phase Ünlü, Tuğba; Tekinalp, Ozan; Department of Aerospace Engineering (2009) In the thesis, automatic flight control system is designed for Tilt Duct Unmanned Aerial Vehicle (UAV). The vehicle is a Vertical Take-Off Landing (VTOL) type with two symmetric rotors on the wings, one aft rotor on the aft body. It behaves like a helicopter but with higher speeds in forward flight. Transition flight of the aircraft from hover to cruise or take-off to forward flight is the primary concern of the thesis study with the nonlinearities and instabilities encountered, together with the over-actua...

Citation Formats

İ. Yavrucuk, “Autolanding Strategies for a Fixed Wing UAV in Adverse Atmospheric Conditions,” 2008, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/69433.