国家航空航天研究所
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作者:Daniela BARAN , Simion TATARU , Mihaela PETRE
来源:[J].INCAS BULLETIN, 2018, Vol.10 (3)NIAR
摘要:The landing gear of an aircraft is an important part of the aircraft structure. The landing and the taking off are most critical parts of a flight mission. The main goal of this paper is to provide a methodology for designing and sizing the landing gear taking into account its ma...
作者:Adriana STEFAN , Cristina-Elisabeta PELIN , George PELIN ...
来源:[J].INCAS BULLETIN, 2018, Vol.10 (3)NIAR
摘要:O-rings are designed to be seated in a groove and compressed during assembly between two or more parts, creating a seal at the interface. The joint may be static, or (in a few circumstances) may have relative motion between parts and O-ring (rotating pump shafts and hydrauli...
作者:Calin-Dumitru COMAN , George PELIN
来源:[J].INCAS BULLETIN, 2018, Vol.10 (3)NIAR
摘要:A three-dimensional finite element model has been developed to study the temperature effects on stiffness in linear-elastic range of the bolted metal-composite joints. In this study a quasi - symmetric lay - up for CFRP / vinyl ester epoxy laminate is used in conjunction with alu...
作者:Alexandru-Iulian ONEL , Tudorel-Petronel AFILIPOAE , Ana-Maria NECULAESCU ...
来源:[J].INCAS BULLETIN, 2018, Vol.10 (3)NIAR
摘要:The paper focuses on the multidisciplinary optimisation and preliminary design of a two-stage microlauncher capable of inserting a small 50 kg payload into Low Earth Orbit. The microlauncher is obtained using a MDO approach, where the lightest configuration capable of reaching th...
作者:Irina-Carmen ANDREI , Gabriela STROE
来源:[J].INCAS BULLETIN, 2018, Vol.10 (3)NIAR
摘要:For most compressor flows, the existence of turbulent shear stresses is essential to compensate and overcome the adverse pressure gradients without separation. The performance of compressor improves as the turbulent stresses get stronger relative to the laminar viscous stresses, ...
作者:Nastase-Dan CIOBOTA , Paul STANCIU , Gheorghe Ion GHEORGHE
来源:[J].INCAS BULLETIN, 2018, Vol.10 (3)NIAR
摘要:The paper aims to demonstrate the capability of LPD – Layer Plastic Deposition 3D printing technique to build complex structures for special purposes such us impregnation with carbon materials. It proposes to push the limits of LPD machines in order to achieve both structura...
作者:R. NAVEEN
来源:[J].INCAS BULLETIN, 2018, Vol.10 (3)NIAR
摘要:In the recent years, the researchers focused on the development of long-range aircraft with the commercial aid of nonconventional design concepts. The C-wing concepts for large aircraft are highly preferred to overcome the design constraints such as span, aspect ratio, and compat...
作者:Agneta M. BALINT , Stefan BALINT
来源:[J].INCAS BULLETIN, 2018, Vol.10 (3)NIAR
摘要:This paper is the first part of a 2D description of a single crystal thin plate growth by micro-pulling–down (μ-PD) method. This part concerns the following aspects: the free surface equation and the pressure difference across the free surface (section 2); limits of the pres...
作者:Nicolae MARCOV
来源:[J].INCAS BULLETIN, 2018, Vol.10 (3)NIAR
摘要:We consider solutions, with infinity of zeros, of real second-order linear differential equations. The graph of a solution locates the zeros with a certain precision, which means that zeros are between some successive numerical values of the solution. Once the first zero is calcu...
作者:Haci SOGUKPINAR
来源:[J].INCAS BULLETIN, 2018, Vol.10 (3)NIAR
摘要:In this study numerical calculations are conducted to understand implementation of different wingtip device for wingtip vortexes formation. Numerical methods are performed over NACA 0012 winglet at the varying Reynolds numbers from 0.5x106 to 1x106 with the angle of attack 1...

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