Results 21 to 30 of about 81,958 (286)
Aerodynamic characteristics of hypersonic airfoils based on jet flow control technology
AIP Advances, 2021 Hypersonic aircraft represent an important area of aerospace development. Raising the aircraft lift-to-drag ratio, improving the efficiency of attitude control, and optimizing aerodynamic performance are important goals.
Jiachen Zhu +3 more
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Eilmer: an Open-Source Multi-Physics Hypersonic Flow Solver [PDF]
Comput. Phys. Commun. 282 (2023) Article 108551, 2022 This paper introduces Eilmer, a general-purpose open-source compressible flow solver developed at the University of Queensland, designed to support research calculations in hypersonics and high-speed aerothermodynamics. Eilmer has a broad userbase in several university research groups and a wide range of capabilities, which are documented on the ...
arxiv +1 more source
Bulletin of "Carol I" National Defense University, 2022 Hypersonic missiles represent the new class of threats, capable declaratively and in a way that has not been proven in a theater of operations, to annihilate air and anti-missile defences that exist at this time.
Cătălin CHIRIAC
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Advantages and Challenges of Air-to-Air Missile Hypersonic Defense [PDF]
Hangkong bingqi, 2022 The change of war mode has led to the emergence of new threat targets. In recent years, with the development of technologies, air-space hypersonic flight technology continues to mature and form equipment.
Guo Zhengyu, Dong Meng, Du Miaomiao
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Analysis of Hypersonic Platform-Borne SAR Imaging: A Physical Perspective
Remote Sensing, 2021 The usage of a hypersonic platform for remote sensing application has promising prospects, especially for hypersonic platform-borne synthetic aperture radar (SAR) imaging.
Lihao Song +6 more
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Nonlinear Predictive Control with Sliding Mode for Hypersonic Vehicle
International 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
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Nonequilibrium flow simulations using unified gas-kinetic wave-particle method [PDF]
AIAA Journal 62 (4) (2024) 1411-1433, 2023 Nonequilibrium flows are common in aerospace engineering, and numerical simulations are vital in understanding non-equilibrium flow dynamics in spacecraft flight. The unified gas-kinetic wave-particle (UGKWP) method has been developed for multi-scale flow simulation, which models the coupled particle transport and collision within a numerical time in ...
arxiv +1 more source
Applied Sciences, 2022 Currently, the influence of numerical parameters on the prediction accuracy of the compressible external flow field characterized by a NACA0012 airfoil under hypersonic speed, especially the influence analyses of the trailing edge shape, the modeling ...
Lu Yang, Guangming Zhang
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Terminal Adaptive Guidance for Autonomous Hypersonic Strike Weapons via Reinforcement Learning [PDF]
, 2021 An adaptive guidance system suitable for the terminal phase trajectory of a hypersonic strike weapon is optimized using reinforcement meta learning. The guidance system maps observations directly to commanded bank angle, angle of attack, and sideslip angle rates.
arxiv +1 more source
High-enthalpy hypersonic flows
Advances in Aerodynamics, 2020 Nearly all illuminating classic hypersonic flow theories address aerodynamic phenomena as a perfect gas in the high-speed range and at the upper limit of continuum gas domain.
Joseph J. S. Shang, Hong Yan
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