Browse our articles in publication order, with new stories added automatically.
Abstract To study the physiological effects of airport noise exposure on organisms, Sprague-Dawley (SD) rats were exposed in soundproof chambers…
Abstract This chapter deals with the position control of quadrotor unmanned aerial vehicle (UAV) when quadrotor’s linear velocity is unavailable.…
Abstract Unmanned helicopters (UHs) develop quickly because of their ability to hover and low speed flight. Facing different work conditions,…
Abstract European Union is involving increasing amount of resources on research projects that will dramatically change the costs of building…
Abstract The flight actuation system plays important role in the accurate guidance of the flight vehicles. The actuators driving the…
Abstract Active flow control has recently received an increasing attention since it allows to directly manipulate the flow-field around a…
Abstract Modifications on the intermediate turbine duct in order to reduce noise emissions by changing interaction frequencies and/or modes capable…
It is difficult to avoid thunderstorm regions by aircraft, so that on average every commercial airliner is struck by lightning once per year. Defining test and design criteria of aircraft is becoming important since aircraft safety is increasingly dependent on electronic equipment and the development of new materials (carbon composites, etc.) to replace the metallic airframes. In-flight statistics show that most strikes occurred 3-5 km above sea level, where the temperature is ~ 0C (Uman & Rakov, 2003; Larsson, 2002). There are two different types of lightning strikes to aircraft. The first type is that the aircraft initiates the lightning discharge when it is found in the intense electric field region of a thundercloud, and the second is the interception by the aircraft of an approaching lightning leader. The mechanism for lightning initiation by aircraft is often explained using the “bidirectional leader” theory (Clifford & Casemir,…
The synthetic aperture radar (SAR) is considered now as the most effective instrument for producing radar images of ground scenes with a high spatial resolution. The usage of small aircrafts as the platform for the deployment of SAR systems is attractive from the point of view of many practical applications. Firstly, this enables for a substantial lowering of the exploitation costs of SAR sensors. Secondly, such solution provides a possibility to perform a rather quick surveillance and imaging of particular ground areas. Finally, the progress in this direction will allow for a much wider application of SAR sensors. However, the formation of high-quality SAR images with SAR systems deployed on small aircrafts is still a challenging problem. The main difficulties come from significant variations…
This chapter presents the analysis of the maintenance process of a military aircraft with a detailed description of two areas, i.e. the process of maintaining and the process of operating. Each of these processes is briefly characterized. The section also involves methods enabling the determination of: residual durability of specified devices/systems of a military aircraft on the basis of the diagnostic parameters of these devices/systems, and the effectiveness of a combat task execution on the basis of information registered in the process of aiming. Each presented method is illustrated by a computational example. Tasks executed by the military aircraft A modern military aircraft (MMA) is a hybrid of the most up-to-date achievements in the…
While managing a single project can be a challenging proposition, managing multiple projects truly separates the boys and girls from…
“Crash” word is generally used to describe some kind of accident or damage when one object slams into another. However,…
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