Perimeter Protection of the Areas of Interest

This article analyses the history and current state in the area of outdoor protection. In the first part of the article, the sensory systems, which have been used for many years are described. Attention is paid to the sensors using conventional principles of the detection of the objects. New modern sensory systems together with their principles used for the protection of the outdoor environment are also described. Other problem is that older sensory systems of spatial protection were focused on the security of properties and buildings without expecting any change position in the time. The article analyzes also new possibilities of protecting of the outdoor perimeter even in the situations when the borders of the areas of interest are only temporary or mobile. And as UAV systems have been used massively and often involve modern multisensory systems, the last part of the article describes current sensors, which have been currently used to detect the UAV systems and to to protect the area of interest.

Aircraft Electric Machines

Current trend in aviation is to increase efficiency of all the aircraft’s systems. This leads to a reduction of fuel consumption which has also positive effect on emissions. One possibility how to reach this aim is to replace hydraulic and pneumatic system with an electrical power system. Because many on-board electrical loads are in the form of electrical drives, the special attention is given to electric motors and their electronic speed controllers / power converters. Furthermore, electric motors suitable for traction/propulsion are presented. Moreover, the various types of starter/generators suitable for on-board utilisation are compared in the paper.

Evaluation of Chosen Parameters of Servomechanisms

This paper provides a comprehensive view of the issues in the field of servomechanisms of unmanned aircraft, which are used in the Department of Avionics for both education and research purposes. This contribution will describe the methodology and individual measuring devices, facilitating the control of prescribed parameters with parameters measured in real conditions. As some manufacturers deliberately exaggerate the data of their products to compete with other manufacturers, it is important to have a proven and reliable method for the evaluation of these parameters. The last part provided the results of control measurements of the selected servomechanism.

The Flight Authorization of the Automatized VTOL UAS for Meteorological Sensor Measurement

Considering the exponential growth of drone technology and its expected economic effect [1], the Hungarian Government called on the industrial and academic sectors for an innovative cooperation in the field of intelligent autonomous mobility. The tender was launched by the Institute of Transport Sciences Non-profit Ltd. (ITS) last December, and among the winners was the joint tender of the Mould Tech Systems Ltd., the Budapest University of Technology and Economics and the University of Public Service (UPS). The common research is focusing on the implementation of a special Vertical Take-Off and Landing Unmanned Aircraft System (VTOL UAS)-based meteorological support system which is to measure the lower parts of the atmosphere within the planetary boundary layer (PBL). The researchers of UPS are examining the legal issues of operational conditions, flight authorization, flight safety aspects concerning the identification of potential dangers, and the airworthiness issues and will formulate their recommendations. In this paper the authors introduce the numbers of issues that have to be solved in favour of the safe and legal VTOL UAS operation.

Project IMAF – Research on Measurement of Airspeed of Unconventional Flying Vehicles

Article presents the project of "Innovative measurement of airspeed of unconventional flying vehicles", its backround, contents and planned activities.

Behavioral Models of Isolated Individuals and Entities

The article describes the possibilities of using simulation in various fields, whether in aviation, education or in many other sectors. Modeling and simulation in computer training to increase civil security are becoming particularly important for the development of today's society. Many simulator programs today allow the simulation of the influence of individual human factors and it is possible to apply this into model situations, which for safety reasons is difficult to test in real life. However, accurate and effective models of human behavior also indicate great potential in military and crisis management. At present, these methods can be used to simulate the behavior of isolated individuals and entities that have a major impact, for example, on the spread of various viral diseases, depending on several factors. These factors include population, geographical location, age group of the isolated and also social and cultural aspects, to which special space is devoted in this article. These factors can be used as inputs to the model for predicting the behavior of isolated groups of the population, on the basis of which it is possible to estimate in advance the spread of a possible epidemic, through various simulations.

Safety Approaches of Population Protection During Air Shows in the Czech Republic

In recent years, organizing air shows is a very popular attraction. The proof is the high number of visitors. Examples are the NATO Days in Ostrava, where the number of visitors is around 200,000, or the CIAF in Hradec Králové, which will be attended by 40,000 visitors. The aim of the articles is to approach and analyse the approaches that ensure the safety of people during these events in the Czech Republic. Several legal regulations dealing with this issue were analysed and their content is focused on the obligations of the rescue system during air events. The contribution of the article can be information that can help ensure the safety of air shows abroad.

Energy Harvesting Methods in Aviation

Each modern aircraft use a large number of sensors, which task is to sense various operating parameters. These are subsequently sent to the appropriate computer to processes them. Because the sensors are very often located in remote parts of the aircraft, their power and signal wires have to be quite long. Moreover, the large number of wires and conductors complicates the design of the aircraft, especially their placement and clamping in non-pressurized parts and near fuel tanks. For these reasons, it is more convenient to use sensors with own power supply and which use a wireless communication with a computer. Today, most of remotely located sensors use electrochemical voltage sources, however these have environmental and reliability issues. The solution is to use sensors that generate their own energy. This article points out the possibility of using on-board sensors with energy harvesting technology.

The General Characteristics and Properties of a Fighter Jet Aircraft F-16

The fighting in the air-to-air combat and air-to-surface combat represents a relatively new type of combat, happening for a period of only around seventy years. In these years a quick technological advancement took place and caused the development of very primitive weapons to the present beyond the visual range or point-to-shoot capabilities of nowadays aircraft. Though aerial combat fundamentals remained very similar to those in the past, seasoned only by actual combat and exercises for training purposes. Although these standards remained almost untouched, the technological advancement in aircraft design and weapon systems is immense. This applies also to the fighter jet aircraft called F-16. The F-16 is one of the most widespread fighter jets ever produced, if not the most. It is important to improve the aircraft design and its systems for navigation, orientation, and maybe most importantly, its ‘weaponry and surrounding accessories.

Typical Errors, Accuracy Classes and Currently Expected Accuracy of Inertial Measurement Units

Inertial measurement units can nowadays be found in a wide range of applications, from consumer electronics to precision surveying systems requiring high accuracy. IMUs are also widely used in aviation, especially for UAVs. The gyroscopes and accelerometers in IMUs have specific operating modes that would result in specific errors typical of such instruments. This paper reviews the typical errors of IMUs and the accuracy that can be achieved with these instruments today in each application area.