Results 211 to 220 of about 61,445 (265)
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Ab initio simulation of hypersonic flows past a cylinder based on accurate potential energy surfaces

, 2021
For the first time in the literature, we present 2D simulations of hypersonic flows around a cylinder obtained from accurate ab initio potential energy surfaces (PESs).
Maninder S. Grover, P. Valentini
semanticscholar   +1 more source

RETRACTED: Adaptive attitude control and the modeling of hypersonic vehicles with mismatched disturbances

The International Journal of Electrical Engineering & Education, 2021
Hypersonic vehicles often use the aerodynamic configuration and light materials such as lifting body and waverider, which leads to the unmatched uncertain control problems caused by strong coupling characteristics and interference during reentry.
Qingxiang Zhong   +3 more
semanticscholar   +1 more source

Experimental investigation of unstart dynamics driven by subsonic spillage in a hypersonic scramjet intake at Mach 6

, 2020
Understanding start–unstart behavior of intakes in hypersonic Mach numbers is essential for seamless operation of scramjet engines.
M. K. Devaraj   +4 more
semanticscholar   +1 more source

Hypersonic missiles

2023
This POSTnote looks at hypersonic missile technologies, efforts to develop them, potential applications, and the possible challenges they may present for missile defence and global stability. Key Points: • Hypersonic missiles combine speeds of over five times the speed of sound with significant manoeuvrability during flight.
Emily Noone, Lydia Harriss
openaire   +1 more source

An Adaptive Critic Design-Based Fuzzy Neural Controller for Hypersonic Vehicles: Predefined Behavioral Nonaffine Control

IEEE/ASME transactions on mechatronics, 2019
A novel adaptive critic design (ACD) guaranteeing presented performance is addressed for hypersonic vehicles (HVs). In the previous studies, most ACDs focus on affine systems while ACD-based nonaffine tracking control is rare. In this paper, we propose a
Xiangwei Bu, Yuhe Xiao, Humin Lei
semanticscholar   +1 more source

Hypersonic Target Detection and Velocity Estimation in Coherent Radar System Based on Scaled Radon Fourier Transform

IEEE Transactions on Vehicular Technology, 2020
The long-time Coherent Integration (CI) is one of the most effective and important techniques to improve radar detection performance for hypersonic weak targets in coherent radar system.
Zhi Sun   +4 more
semanticscholar   +1 more source

A review of the shock-dominated flow in a hypersonic inlet/isolator

Progress in Aerospace Sciences, 2023
He-xia Huang   +11 more
semanticscholar   +1 more source

Introduction to hypersonic vitrectomy

Current Opinion in Ophthalmology, 2019
To 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
openaire   +2 more sources

Hypersonic Low Density Wakes

The Physics of Fluids, 1965
Under conditions of high speed and gas rarefaction the character of the wake behind a body changes significantly from its behavior at normal densities. Experimental studies at M ≃ 6 and 8 with spheres and cylinders have clearly established the transition from the shock-expansion-neck-recompression type of wake to a completely merged type of flow field.
Chuan, R. L., Yang, H. T.
openaire   +1 more source

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