国家航空航天研究所
期刊
会议
图书
作者:Alexandru IONEL
来源:[J].INCAS BULLETIN, 2017, Vol.9 (2)NIAR
摘要:This paper analyzes the possibility of deorbiting a launch vehicle upper-stage at end-of-mission from low Earth orbit through the use of a solar sail. Different solar sail sizes are taken into account. The analysis is made via a MATLAB numerical simulation, integrating with the o...
作者:Yamina BOUGHARI , Georges GHAZI , Ruxandra Mihaela BOTEZ ...
来源:[J].INCAS BULLETIN, 2017, Vol.9 (2)NIAR
摘要:Setting the appropriate controllers for aircraft stability and control augmentation systems are complicated and time consuming tasks. As in the Linear Quadratic Regulator method gains are found by selecting the appropriate weights or as in the Proportional Integrator Derivat...
作者:Dorin LOZICI-BRINZEI , Radu BISCA , Simion TATARU
来源:[J].INCAS BULLETIN, 2017, Vol.9 (2)NIAR
摘要:This paper presents a methodology for identifying some stress concentrators based on the modal analysis performed using MSC Patran and MSC Nastran programs. The influence of a beam crack on its own frequency is practically insignificant. In order to emphasize this concentrator an...
作者:Binte Fatima Tuz ZAHRA , Syed Tauqeer ul Islam RIZVI , Syed Irtiza Ali SHAH
来源:[J].INCAS BULLETIN, 2017, Vol.9 (2)NIAR
摘要:In this paper, a novel approach has been presented to integrate command to line-of-sight (CLOS) guidance and proportional navigation (PN) guidance in order to reduce miss distance and to increase the effectiveness of surface to air missiles. Initially a comparison of command...
作者:Joseph G. ABDULAHAD , Shaker M. RASHEED , Hakima Kh. AHMED
来源:[J].INCAS BULLETIN, 2017, Vol.9 (2)NIAR
摘要:In this paper a mathematical model is constructed to describe a two dimensional incompressible flow in a symmetric horizontal thin liquid film for unsteadies flow. We apply the Navier-Stokes equations with specified boundary conditions and we obtain the equation of the film thick...
作者:Nicolae MARCOV
来源:[J].INCAS BULLETIN, 2017, Vol.8 (2)NIAR
摘要:Consider an origin which is fixed at the Earth’s surface, and a rectangular celestial coordinates axes with this origin. The gravity acceleration is the approximate sum of the centrifugal acceleration of the origin relatively to the Earth’s center and the Newton’s gravi...
作者:Adrian GRUZEA
来源:[J].INCAS BULLETIN, 2017, Vol.9 (2)NIAR
摘要:This paper refers to some aspects regarding the terms “chevron” and “fluidic chevron” and to the process of increasing the jet engines exhaust mixing rate towards achieving noise reduction. One of the noise reduction methods consists in covering the high velocity main f...
作者:Ion DIMA , Cristian-Gheorghe MOISEI , Calin-Dumitru COMAN ...
来源:[J].INCAS BULLETIN, 2017, Vol.9 (2)NIAR
摘要:Random vibrations occur during the launch at the fastening interface between thruster brackets and basic support of satellite. These are generated in the launcher by the motion of some mechanical parts, combustion phenomena or structural elements excited by the acoustic environme...
作者:Agneta M. BALINT , Stefan BALINT
来源:[J].INCAS BULLETIN, 2017, Vol.9 (2)NIAR
摘要:In this paper the propagation, generated by some explicit permanent time harmonic perturbations are presented, in a 2D straight duct, carrying a constant gas flow. The amplitude of the perturbations is not that given by the Dirac function, as it is considered in general in litera...
作者:Daniela ENCIU , Mihai TUDOSE , Camelia Elena MUNTEANU ...
来源:[J].INCAS BULLETIN, 2017, Vol.9 (2)NIAR
摘要:The paper presents some results obtained within a project of the “NUCLEU” Program financed by the Ministry of Research and Innovation-ANCS. The project supposes, among others, the design and the realization of a demonstrator for strain and stress measurements made with Fiber...

我们正在为您处理中,这可能需要一些时间,请稍等。

资源合作:cnki.scholar@cnki.net, +86-10-82896619   意见反馈:scholar@cnki.net

×