Zobrazeno 1 - 10
of 26
pro vyhledávání: '"Shangqiu Shan"'
Publikováno v:
IEEE Access, Vol 7, Pp 3406-3421 (2019)
Optimal periodic control is an effective technique to reduce aerodynamic heating and fuel consumption of hypersonic cruise vehicles. Herein, this optimal control problem has been solved by nonlinear programming and passed the posteriori check of opti
Externí odkaz:
https://doaj.org/article/fe2cd819650c477884f1ef2a021add0e
Publikováno v:
IEEE Access, Vol 7, Pp 65486-65505 (2019)
Periodic cruise has been proven an effective trajectory to conserve fuel and alleviate aerodynamic heating for hypersonic cruise vehicles (HCVs). This work studies how to adopt an HCV with active cooling to periodic cruise. In this adaption, payload
Externí odkaz:
https://doaj.org/article/fef37dae01bd4868b7297b4461596f6c
Publikováno v:
Advances in Mechanical Engineering, Vol 9 (2017)
Aircraft longitudinal dynamics is approximated by short-time mode and phugoid mode from experience. In this article, a rigorous mathematical method is provided based on the singular perturbation theory to deal with this decoupling problem. The longit
Externí odkaz:
https://doaj.org/article/97e7adfc01d94bec9eb0659a72380e56
Autor:
Jin Wu, Shangqiu Shan
Publikováno v:
Aerospace, Vol 6, Iss 9, p 102 (2019)
In this paper, the attitude determination problem from two vector observations is revisited, incorporating the redundant equality constraint obtained by the dot product of vector observations. Analytical solutions to this constrained attitude determi
Externí odkaz:
https://doaj.org/article/b4fd5058daab4ae0bcac2dccc3f019a0
Publikováno v:
International Journal of Aerospace Engineering, Vol 2015 (2015)
Dynamic soaring is a special flying technique designed to allow UAVs (unmanned aerial vehicles) to extract energy from wind gradient field and enable UAVs to increase the endurance. In order to figure out the energy-extraction mechanisms in dynamic s
Externí odkaz:
https://doaj.org/article/c1ab3f5ebfd84ae2a6c0ed69676fff1c
Publikováno v:
Applied Sciences, Vol 7, Iss 10, p 1061 (2017)
The endurance of an aircraft can be considerably extended by its exploitation of the hidden energy of a wind gradient, as an albatross does. The process is referred to as dynamic soaring and there are two methods for its implementation, namely, susta
Externí odkaz:
https://doaj.org/article/e9de6377b50645d0ac222426aeb9bf82
Publikováno v:
IEEE Access, Vol 7, Pp 3406-3421 (2019)
Optimal periodic control is an effective technique to reduce aerodynamic heating and fuel consumption of hypersonic cruise vehicles. Herein, this optimal control problem has been solved by nonlinear programming and passed the posteriori check of opti
Publikováno v:
Journal of the Balkan Tribological Association. 2016, Vol. 22 Issue 4-I, p3876-3887. 12p.
Autor:
Shangqiu Shan, Zhongxi Hou
Publikováno v:
Journal of Nanoelectronics and Optoelectronics. 12:981-985
Publikováno v:
2019 Chinese Control Conference (CCC).
Dynamic soaring is a technique that seabirds like albatrosses use uneven natural winds in the atmosphere to extend the range without flapping the wings. To reveal the dynamic soaring mechanics, the equilibrium curve composed of equilibrium points are