Results 21 to 30 of about 1,519 (231)

Nonlinear Predictive Control with Sliding Mode for Hypersonic Vehicle

open access: yesInternational Journal of Aerospace Engineering, 2023
Hypersonic vehicles are difficult to control due to their rapid time variation, dynamic nonlinearity, strong coupling, and model uncertainty. This paper proposes a new nonlinear predictive controller to solve the problem.
Xiande Wu   +4 more
doaj   +1 more source

Study on Oil-Film Interferometry Measurement Technique of Hypersonic Boundary Layer Transition [PDF]

open access: yesXibei Gongye Daxue Xuebao, 2018
Prediction of boundary layer transition is important for the design of hypersonic aircrafts. The study of boundary layer transition of hypersonic flow around a flat plate using oil-film interferometry was investigated at Φ500mm traditional hypersonic ...

doaj   +1 more source

Developing and applying Mach 4.5 nozzle in hypersonic wind tunnel

open access: yesXibei Gongye Daxue Xuebao, 2021
Mach 4.5 tests in a conventional trans-supersonic wind tunnel are often accompanied by the air liquefaction phenomenon, resulting in the low reliability of test data.
HUANG Ju   +4 more
doaj   +1 more source

Target Detection Algorithm for Hypersonic Vehicle Based on Wideband Radar Echo Model

open access: yesIEEE Access, 2019
High speed of the hypersonic vehicle can cause the noticeable scale effect and intra-pulse Doppler on radar echoes, especially under the large time-bandwidth product transmitting signal.
Zhiyong Niu, Tao Su, Jibin Zheng
doaj   +1 more source

Shock Wave Intelligent Prediction Method for Hypersonic Vehicle

open access: yes气体物理, 2023
Accurate prediction of shock wave position of hypersonic aircrafts can effectively improve the accuracy and efficiency of computational fluid dynamics (CFD) simulation.
Yuan-hao ZHU   +6 more
doaj   +1 more source

Hypersonic Vehicle Aerodynamic Optimization Using Field Metamodel-Enhanced Sequential Approximate Optimization

open access: yesInternational Journal of Aerospace Engineering, 2021
Hypersonic vehicle has gained increasing attention due to its high cruise speed and long voyage. In this paper, an enhanced Sequential Approximate Optimization method is proposed for aerodynamic optimization of a hypersonic vehicle.
Wenjie Wang   +5 more
doaj   +1 more source

Studies on the propagation properties of THz wave in inhomogeneous dusty plasma sheath considering scattering process

open access: yesResults in Physics, 2021
The plasma sheath formed during the reentry process is able to block the detection and communication to the hypersonic vehicle. Various of interactions occur during the propagation of EM wave in the plasma sheath.
Kai Chen   +4 more
doaj   +1 more source

On the Görtler Vortex Instability Mechanism at Hypersonic Speeds [PDF]

open access: yesTheoretical and Computational Fluid Dynamics, 1989
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Hall, Philip, Fu, Yibin
openaire   +2 more sources

Research on Aerodynamic Performance of High-Pressure Capturing Wing with Bi-Wing Configuration in Wide-Speed Range

open access: yes气体物理, 2023
The aerodynamic configuration design of wide-range hypersonic vehicle has become one of the research hotspots. The new aerodynamic configuration of high-pressure capturing wing (HCW) can meet the requirements of high volume ra-tio, high lift and high ...
Yao XIAO   +4 more
doaj   +1 more source

Differential Game Guidance Law Based on Adaptive Dynamic Programming for the Interception of Hypersonic Targets

open access: yesHangkong gongcheng jinzhan, 2020
With the rapid development of hypersonic vehicle technology, the research on defense approach of the hypersonic weapons is constantly deepening. A lot of guidance law researchers made their efforts to tackle with the problem of high speed, active large ...
SUN Lei   +4 more
doaj   +1 more source

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