Results 41 to 50 of about 3,082,518 (143)
International Journal of Mechanical System Dynamics, EarlyView.ABSTRACT The design of control systems for high‐agility mechanical systems operating in extreme environments is a significant challenge in nonlinear dynamics. This paper addresses the complex dynamic control problem of a hypersonic interceptor, modeled as a multi‐input multi‐output (MIMO) mechanical system characterized by strong aerodynamic cross ...
Mohammad Mahdi Soori +1 more
wiley +1 more source
Designing Flight Experiments for Hypersonic Flow Physics [PDF]
, 2005 A major problem of concen for the success of physical-modelling resides in the availability of experimental data for model validation, particularly in the hot hypersonic regime.
Gülhan, A. +4 more
core
ComputationThe Direct Simulation Monte Carlo (DSMC) method, introduced by Graeme Bird over five decades ago, has become a crucial statistical particle-based technique for simulating low-density gas flows.
Angelos Klothakis, Ioannis K. Nikolos
doaj +1 more source
Magnetohydrodynamic Control of Hypersonic Separation Flows
International Journal of Aerospace Engineering, 2021 Magnetohydrodynamic (MHD) control of hypersonic laminar separation flows is investigated in this paper. A series of numerical simulations over various geometry configurations, namely, a compression corner and a double wedge ramp hypersonic inlet, have ...
Shichao Luo +3 more
doaj +1 more source
Actuators, 2022 In this paper, an opposing jet is applied to the space shuttle arc leading edge and the lifting body cone leading edge in the hypersonic condition of the rarefied flow field.
Yi Shen +5 more
doaj +1 more source
Sliding Mode Control in Aerospace Applications: A Survey
International Journal of Robust and Nonlinear Control, EarlyView.ABSTRACT Sliding mode control (SMC) enjoys robustness to matched and unmatched (in the case of minimum phase input‐output dynamics) bounded perturbations, and finite time convergence. Second‐order and higher‐order sliding mode control systems (2‐SMC/HOSMC) retain all the advantages of sliding mode control, but in addition can be applied to systems of ...
Yuri Shtessel, Christopher Edwards
wiley +1 more source
The Political Quarterly, EarlyView.Abstract This article argues that the current debate over defence spending in the United Kingdom is fundamentally flawed. Too much emphasis is being placed on preparing for a form of warfare with Russia that is unlikely to occur. As this article points out, the Russians actually want to avoid a traditional battlefield confrontation with NATO.
Rod Thornton
wiley +1 more source
Performance analysis of a new hypersonic vitrector system. [PDF]
PLoS ONE, 2017 To evaluate porcine vitreous flow and water flow rates in a new prototype hypersonic vitrectomy system compared to currently available pneumatic guillotine vitrectors (GVs) systems.Two vitrectors were tested, a prototype, ultrasound-powered, hypersonic ...
Paulo Eduardo Stanga +4 more
doaj +1 more source
The Continuity and Rupture of the ‘New Washington Consensus’: From Biden to Trump 2.0
Global Policy, EarlyView.ABSTRACT The ‘New Washington Consensus’ (NWC) represents a major intellectual shift in the US approach to global economic governance. However, the NWC has never been subject to systematic academic critique. With Trump's return to the White House ushering in a new era of US trade policy, the NWC is widely considered to be politically irrelevant in the ...
Ming Du
wiley +1 more source
Effects of Configuration and Slot Angle of the Bleed System on the Performance of Hypersonic Inlet
气体物理, 2023 The numerical simulation of a typical two-dimensional hypersonic inlet was carried out to study the effects of configuration and slot angle of the bleed system on the performance of hypersonic inlet.
Hao-Yu CHEN, He-Xia HUANG, Hui-Jun TAN
doaj +1 more source