Results 161 to 170 of about 39,906 (229)
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IEEE Transactions on Cybernetics, 2022
This article proposes an observer-based reinforcement learning (RL) control approach to address the optimal attitude-tracking problem and application for hypersonic vehicles in the reentry phase.
Shangwei Zhao +3 more
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This article proposes an observer-based reinforcement learning (RL) control approach to address the optimal attitude-tracking problem and application for hypersonic vehicles in the reentry phase.
Shangwei Zhao +3 more
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IEEE Transactions on Systems, Man & Cybernetics. Systems, 2020
This paper presents a novel fixed-time sliding mode disturbance observer (SMDO)-based robust backstepping cruise tracking control scheme with closed-loop finite-time convergence for flexible air-breathing hypersonic vehicles (FAHVs).
Jinlin Sun, J. Yi, Z. Pu, Xiang-min Tan
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This paper presents a novel fixed-time sliding mode disturbance observer (SMDO)-based robust backstepping cruise tracking control scheme with closed-loop finite-time convergence for flexible air-breathing hypersonic vehicles (FAHVs).
Jinlin Sun, J. Yi, Z. Pu, Xiang-min Tan
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Soviet Physics Uspekhi, 1970
The fundamental results of recent research on the propagation of elastic microwaves (hypersonic waves) in crystals of various types are considered. The procedure for experiments with hypersonic waves is briefly described. The characteristics of the propagation of elastic waves in crystals (polarization, velocity, energy flux) and methods of their ...
Vladislav V Lemanov, G A Smolenskiĭ
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The fundamental results of recent research on the propagation of elastic microwaves (hypersonic waves) in crystals of various types are considered. The procedure for experiments with hypersonic waves is briefly described. The characteristics of the propagation of elastic waves in crystals (polarization, velocity, energy flux) and methods of their ...
Vladislav V Lemanov, G A Smolenskiĭ
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IEEE transactions on industrial electronics (1982. Print), 2020
A two-step strategy is developed for real-time trajectory planning of a hypersonic vehicle (HV) in the reentry phase. The first step generates the optimal trajectory for the HV using a recently proposed fuzzy multiobjective transcription method.
Runqi Chai +4 more
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A two-step strategy is developed for real-time trajectory planning of a hypersonic vehicle (HV) in the reentry phase. The first step generates the optimal trajectory for the HV using a recently proposed fuzzy multiobjective transcription method.
Runqi Chai +4 more
semanticscholar +1 more source
Journal of Applied Mechanics, 1974
Apart from method of characteristic calculations, there has been little analytical consideration of high-speed internal flows where transverse curvature and/or viscous-inviscid interaction are important. Molder [1] has carried out a numerical computation for internal conical flow using the inviscid Taylor-Macoll equations; however, a singular ray is ...
Lin, T. C., Rubin, S. G.
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Apart from method of characteristic calculations, there has been little analytical consideration of high-speed internal flows where transverse curvature and/or viscous-inviscid interaction are important. Molder [1] has carried out a numerical computation for internal conical flow using the inviscid Taylor-Macoll equations; however, a singular ray is ...
Lin, T. C., Rubin, S. G.
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Introduction to hypersonic vitrectomy
Current Opinion in Ophthalmology, 2019To review the development of hypersonic vitrectomy and present the first case series in the United States.From 27 September 2017 to 4 December 2017, 64 patients underwent hypersonic vitrectomy with 20 patients having conventional 23-ga vitrectomy for comparison.
Kevin J, Blinder +5 more
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Fixed-Time Actuator Fault Accommodation Applied to Hypersonic Gliding Vehicles
IEEE Transactions on Automation Science and Engineering, 2021This article presents a fixed-time accommodation strategy of actuator faults for hypersonic gliding vehicles (HGVs). The approach against actuator faults is incorporated by sliding mode control (SMC), bilimit homogeneity, and adaptive techniques, with ...
Xiang Yu, Peng Li, Youmin Zhang
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Journal of the Aerospace Sciences, 1959
An extension of classical hypersonic similitude is developed which takes into account the interaction effect of the displacement thickness of the boundary layer. A basic result of this viscous similitude is that the total drag including frictional drag obe}^s the classical similarity law for the pressure drag. Additional similarity conditions governing
Hayes, Wallace D., Probstein, Ronald F.
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An extension of classical hypersonic similitude is developed which takes into account the interaction effect of the displacement thickness of the boundary layer. A basic result of this viscous similitude is that the total drag including frictional drag obe}^s the classical similarity law for the pressure drag. Additional similarity conditions governing
Hayes, Wallace D., Probstein, Ronald F.
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Capabilities and limitations of existing hypersonic facilities
, 2020This paper presents an overview and analysis of the various aspects of hypersonic ground testing. For this, first the simulation requirements according to the different flow regimes of hypersonics flight are briefly described.
S. Gu, H. Olivier
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Reliability of Hypersonic Airfoil with Freeplay and Stochasticity via Nonlinear Energy Sink
AIAA JournalThe reliability of a pitch-plunge hypersonic airfoil in random fluctuating flow with both cubic and freeplay nonlinearity is examined. The Hopf bifurcation and dynamic responses of the hypersonic airfoil are performed.
Wei Guo +4 more
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