Zobrazeno 1 - 10
of 254
pro vyhledávání: '"WANG Kelei"'
Publikováno v:
Xibei Gongye Daxue Xuebao, Vol 40, Iss 6, Pp 1195-1203 (2022)
The transition state is the most critical and dangerous state of the VTOL fixed wing aircraft in the whole flight process. In this paper, a transition corridor for a distributed propulsion VTOL fixed-wing aircraft is studied based on the lift charact
Externí odkaz:
https://doaj.org/article/150de294cf604d5fab934219f60e2508
Publikováno v:
Hangkong gongcheng jinzhan, Vol 13, Iss 5, Pp 1-13 (2022)
The vertical takeoff and landing(VTOL)fixed wing unmanned aerial vehicle(UAV)has many advantages,such as low requirements for takeoff and landing site,good maneuverability,high cruise speed and long endurance,etc.,which is a hot topic in the aviation
Externí odkaz:
https://doaj.org/article/1ee04403457b479397ea41878e9c49ab
Publikováno v:
Xibei Gongye Daxue Xuebao, Vol 40, Iss 3, Pp 512-523 (2022)
Based on the application requirements of a small hand-launched solar-powered unmanned aerial vehicle (UAV) in flying wing configuration, the optimization design of the low Reynolds number (LRN) reflexed airfoil is carried out in this study to meet se
Externí odkaz:
https://doaj.org/article/8d89d94f46244ad18c5388a013802532
Publikováno v:
Xibei Gongye Daxue Xuebao, Vol 40, Iss 2, Pp 271-280 (2022)
To improve the efficiency of the composite material wing structure of a solar-powered UAV, this paper proposed an efficient discrete structural topological optimization method based on the notion of bionic design. The method considers the features of
Externí odkaz:
https://doaj.org/article/df78ff37bba1435cada1f007f7c1c281
Publikováno v:
Xibei Gongye Daxue Xuebao, Vol 40, Iss 1, Pp 18-24 (2022)
According to the development and research background of the next generation civil aircraft, the aerodynamic characteristics and stall mechanism of a specified distributed propulsion (DP) blended-wing-body (BWB) aircraft are analyzed and studied by co
Externí odkaz:
https://doaj.org/article/eae8b2dbffa747d490382bda9bc73a79
We study some problems on self similar solutions to the Fujita equation when $p>(n+2)/(n-2)$, especially, the characterization of constant solutions by the energy. Motivated by recent advances in mean curvature flows, we introduce the notion of $F-$f
Externí odkaz:
http://arxiv.org/abs/2407.20035
Autor:
Guo, Hongjun, Wang, Kelei
We construct entire solutions of bistable reaction-diffusion equations by mixing finite planar fronts, which form a finite-dimensional manifold. These entire solutions are generalized traveling fronts, that is, transition fronts. We also show their u
Externí odkaz:
http://arxiv.org/abs/2404.09237
Autor:
Wang, Kelei, Yi, Guangzeng
This is the first in a series of papers devoted to the blow up analysis for the quenching phenomena in a parabolic MEMS equation. In this paper, we first give an optimal H\"{o}lder estimate for solutions to this equation by using the blow up method a
Externí odkaz:
http://arxiv.org/abs/2404.03223
We establish a Liouville type result for stable solutions for a wide class of second order semilinear elliptic equations in $\mathbb{R}^{n}$ with sign-changing nonlinearity $f$. Under the hypothesis that the equation does not have any nonconstant one
Externí odkaz:
http://arxiv.org/abs/2312.00998