国家航空航天研究所
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作者:Agneta M. BALINT , Loredana TANASIE
来源:[J].INCAS BULLETIN, 2012, Vol.4 (4)NIAR
摘要:In this paper the zeros of some dispersion relations apperaring in sound attenuation problems in circular lined ducts, carrying a gas flow, are investigated numerically. To find the values of frequencies for which the dispersion relations vanish is not easy at all. That is b...
作者:Grigore CICAN , Virgil STANCIU , Daniel-Eugeniu CRUNTEANU
来源:[J].INCAS BULLETIN, 2014, Vol.6 (1)NIAR
摘要:This paper has a small part dealing with the notion of chevron and the process that helps reducing the noise pollution. Based on the gas dynamics and the geometrical parameters of the turbofan jet engine a model of CFD data processing is created. In this process the influence of ...
作者:Corneliu BERBENTE , Sorin BERBENTE , Marius BREBENEL
来源:[J].INCAS BULLETIN, 2013, Vol.5 (1)NIAR
摘要:The gas flow field within an 1D normal shock wave at variable specific heats, viscosity and Prandtl numbers with temperature is considered. At Pr = 0.75 and constant specific heats and viscosity, the already known analytical solution in a somehow different form is found. At some ...
作者:Aurelian Virgil BĂLUŢĂ , Maria ANDRONIE
来源:[J].INCAS BULLETIN, 2010, Vol.2 (4)NIAR
摘要:The work of the Romanian scientist Henri Coanda marked the crucial transition from the experimental scientific research to the industrial development of aeronautics. Based on his contribution over the years a series of developments in various branches of research have been made p...
作者:Nicolae APOSTOLESCU , Dorin LOZICI-BRINZEI
来源:[J].INCAS BULLETIN, 2013, Vol.5 (1)NIAR
摘要:This work describes a computer application to calculate the values of the factors which are used to determine the tensile rupture load of a lug under axial, transverse or oblique loading. It can be used as a procedure for identifying potential failure modes. Lugs are connector-ty...
作者:Constanţa TIVIG
来源:[J].INCAS BULLETIN, 2010, Vol.2 (4)NIAR
摘要:This procedure was developed and used to provide laboratory measurements of spool valve overlap and ports opening timing in the framework of ydraulic servomechanism SMHR qualification tests, in the ‘80s.
作者:Horia DUMITRESCU , Vladimir CARDOS
来源:[J].INCAS BULLETIN, 2015, Vol.7 (1)NIAR
摘要:The main purpose of this paper is to bring about the vorticity-creation process at the boundary surfaces on one hand and to understand the interaction of concentrated vorticity structures on the shear flow on the other hand. The paper address the simulation of flow visualization ...
作者:Andrei C. NAE , Ioan DUMITRACHE
来源:[J].INCAS BULLETIN, 2015, Vol.7 (4)NIAR
摘要:In this paper the key concepts of ITS - Intelligent Transport Systems, CPS - Cyber-Physical Systems and SM - Smart Mobility are defined and correlated with the need for ACAS – Airborne Collision Avoidance System, as the last resort safety net and indispensable ingredient in ...
作者:Iosif RUS
来源:[J].INCAS BULLETIN, 2012, Vol.4 (1)NIAR
摘要:After World War I Romania was sized with contradictory feelings: on the one hand: a general euphoria, stimulating many ambitions, on the other hand, the fear that everything that had been obtained through the sacrifice of half a million Romanian soldiers could have been lost. The...
作者:Ioan SEBESAN , Dan BAIASU , Gheorghe GHITA
来源:[J].INCAS BULLETIN, 2012, Vol.4 (3)NIAR
摘要:High speed railway vehicles features a specific lateral oscillation resulting from the coupled lateral displacement and yaw of the wheelset which leads to a sinusoid movement of the wheelset along the track, transferred to the entire vehicle. The amplitude of this oscillatio...

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