Egy korszerű tervezési elveken alapuló, könnyű repülőgép bemutatása

Egy megtervezett, korszerű, alacsony költségvetésű, könnyű szerkezetű, kis üzemanyag fogyasztású, nagy hatótávolságú repülőgép bemutatása jelen dolgozat témája. A tervezést piackutatási tanulmány is megelőzte a hazai előállítási-gyártási és értékesítési lehetőségek felmérése céljából. A GAMA tanulmányok szerint, a könnyű sport repülőgépek 20-25%-a jelenleg dugattyús motorok felhasználásával készül, és ez az arány pár éven belül elérheti a 35-50%-ot. Az FAA (Federal Aviation Association) 20 éves prognózisa szerint a könnyű sportrepülőgépk piaca 825 repülőgéppel nőtt évente 2013-ig, majd azt követően 335 repülőgép éves szintre stabilizálódik a piaci kereslet. A tervezés elsődleges szakaszát szélcsatorna tesztek és repülesi tesztek fogják követni, melyek segítségével megálapítható a repülő teljesítmenye

Analysis of the Transitional Process into Naval Electrical Equipment

The analysis is based on a naval power with synchronous generator and consumers of various powers. The paper presents a systemic approach to naval power systems based on mathematical models of specific generators and consumers

Dependence of the maximum power and wind speed

The issue paper is to present renewable energy sources insisting mainly on wind energy. This source is analyzed in the context of Romania in particular and the EU in general. A turbine with horizontal axis is usually coupled with vessel power systems. Wind energy knows an increased growth rate. At the end of the paper are presented possible structure of coupled a wind to power systems

Stationary Magnetic Field of an Electric Circuit Laid out on the Floatation of a Ship

This paper presents the calculus algorithm of the intensity of the magnetic field for a maritime ship. The following have been analyzed: the magnetic field created by a live oriented right line segment and the magnetic field created by oriented circuit segments positioned across in the floating plane from a ship side to the other. The spreading of the magnetic field has been calculated for a ship with a view to compensate the vertical component of the terrestrial magnetic field

Naval Power System Dynamics with Proportional Type Regulators

This work analyzes the dynamic behavior of naval power system using proportional type controllers, system which provides energy for consumers on the vessel so that the voltage and frequency is always in nominal value limits. Essential problems of the work relates to the tuning of controllers, because the system is nonlinear and we can’t apply known criteria. Analyzing type P controllers we found that oscillations known to occur in proportional type controller can put out the naval power system

The Dynamics of Naval Power System with Integrator Proportional and Derivative Integrator Proportional Regulators

The essay analyses the dynamics activity of the naval power system regulators using the integrator proportional and derivative integrator proportional regulators, system that provides the necessary energy for ship consumers so that the voltage and the frequency is always within nominal values

Mircea cel Batran

Abstract: Because of the low emitting power of radio stations present on ships, for the specific range of emitting frequencies, parameters such as radiated power density and electric field intensities meet both European and American safety standards (EN 60215: 1989(EN 60215: /A2: 1994 It is important to note that international organizations recommend taking measures to reduce the risk of exposure of the human body to electromagnetic fields. The standard values on the limits of electric and magnetic fields, at 50/60 Hz frequency, at which a human organism can be exposed, according to these standards are: electric field (exposure time = 8/24 ore): 10kV/m -professional areas and 5 kV/m -public domains; magnetic field (exposure time= 8/24 ore): 500µT --professional areas and 100µT -public domains. At the industrial frequency of 50 / 60Hz the criteria used for the exposure limits is the induced current densitywell-established effects, such as interactions with excitable membranes of muscle and nerve cells, dependent on this factor [92]. In this sense standard SR EN 50166 1 states the following ranges of values of induced current density and associated biological effects [92]: under 1 mA/

RESERCH STUDIES ON THE LOCATION OF A WAVE ENERGY POWER PLANT WITHIN CONSTANTA AREA

This paper is based on a research project on the development and installation of the first hydropneumatic plant in the Black Sea. It shows the location and its particularities, existing and previous hydrometeorological conditions, required work, plant qualities and standards to be met. The wave characteristics calculation and the hydrotechnic studies were presented: articulated concrete blocks demolition of the existing breakwater; dredging for the foundation of the plant; accomplish the foundation of the plant; installation of the plant; testing; consolidation and assuring protection of the breakwater; consolidation and assuring protection of the plant. Environmental protection measures are an important part of any research project of this type

IDENTIFICATION SYSTEM, TRACKING AND SUPPORT FOR VESSELS ON RIVERS

According to the program COMPRIS (Consortium Operational Management Platform River Information Services), AIS (Automatic Identification System), RIS (River Information Services) have compiled a reference model based on the perspective of navigation on the river with related information services. This paper presents a tracking and monitoring surveillance system necessary for assistance of each ship sailing in an area of interest. It shows the operating principle of the composition and role of each equipment. Transferring data to traffic monitoring authority is part of this work