نتایج جستجو برای: aircrafts
تعداد نتایج: 1085 فیلتر نتایج به سال:
in recent years, design of small aircrafts are studied and extensively developed. one of the most important of these aircrafts is micro aerial vehicles (mavs). as part of aerodynamic design of mavs, the wing design is important. in fact, the main part of this design is to find an appropriate shape for the wing. in this work, influence of the wing shape at low reynolds number flow is investigate...
Distributed electric propulsion (DEP) aircrafts have high efficiency and low fuel consumption, which is very promising for propulsion. The redundant thrusters of DEP increase the risk fault in system, so it necessary to study fault-tolerant control ensure flight safety. There has been little research on coordinated thrust control, system also preliminary stage. In this study, a mathematical mod...
Modern aircrafts have seen a significant growth of avionics systems. Most of new aircrafts have systems for navigation, automatic flight control, collision avoidance systems, flight data recorder, weather radar system as well as communication and monitoring systems. All of these systems use embedded computer systems with increasing memory requirements. In order to reduce the electricity consume...
Abstract— The air traffic conflict resolution represents a real time problem. Thus, it must be interesting to apply methods which their computing time is negligible. In this study, we use cultural algorithms to solve an artificial conflict involving five aircrafts. These algorithms present the advantage to evolve 10 times faster than genetic algorithms. We assume that the trajectories of all ai...
Whether it be in air defense applications or for traffic control is highly desirable to able assess real time the type of aircraft one dealing with. This task may prove useful when object refuses cooperate confront transmitted information with observed trajectory. In present paper we advocate an approach based on position (radar) measurements only, versatility. Besides, propose focus rotation-i...
Air traffic management is a complex system that includes aircrafts, crew, air traffic controllers, automation, traffic rules and climatic conditions that can affect in decision making during the different flight phases (Callantine, 2004). The human factor is the most relevant aspect in this management process, involving controllers working under severe stress and an increasing flow of aircrafts...
DTN is a relatively new research field and many applications have been identified for it. It is an overlay network working over heterogeneous networks in challenged environments where the links are less reliable and the delays are expected to be very long. Due to the difficult working conditions of DTN, all types of available links are utilized to ensure better delivery of messages including th...
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