Results 31 to 40 of about 789,848 (154)
Advanced Science, EarlyView.This study unveils a microstructural‐compatibility design strategy that integrates reactive melt infiltration with plasma spraying to fabricate carbon fiber‐reinforced ZrC‐SiC composites. The deliberate incorporation of SiC into the ZrC coating releases heat accumulation, suppresses detrimental lamellar ZrO2 formation, and reduces residual stress. This
Hongkang Ou +6 more
wiley +1 more source
Advanced Science, EarlyView.Recent advances in metasurface‐enabled low‐observable technologies are reviewed from the perspective of cross‐scale material–structure synergy. Electromagnetic, thermal, optical, and acoustic stealth are highlighted together with dynamic tuning, programmable coding, data‐driven inverse design, artificial intelligence, multispectral compatibility, and ...
Shuhao Wang +5 more
wiley +1 more source
Hypersonic aerodynamics on thin bodies with interaction and upstream influence [PDF]
, 1994 In the fundamental configuration studied here, a steady hypersonic free stream flows over a thin sharp aligned airfoil or flat plate with a leading-edge shock wave, and the flow field in the shock layer (containing a viscous and an inviscid layer) is ...
Khorrami, AF, Smith, FT
core
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
Experimental Hypersonic Aerodynamics and Advances in Aerospace Engineering [PDF]
فناوری در مهندسی هوافضا, 2017 Most space missions fall in the hypersonic reentry regime. There are several open questions and unknown phenomena in aerothermodynamics around vehicles at flow regimes exceeding Mach 4 due to its inherent complexities.
Shahed Malekipour, Mohammad Ebrahimi
doaj
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
An Open-Source Hypersonic Solver for Non-equilibrium Flows
Havacılık ve Uzay Teknolojileri Dergisi, 2021 An implementation of a thermally non-equilibrium modeling on an existing open-source CFD solver is presented in this study. A newly coded open-source Navier-Stokes solver, hyperReactingFoam, including two-temperature model was developed within the ...
Davut Vatansever, Bayram Çelik
doaj
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
Hypersonic interference heating in the vicinity of surface protuberances [PDF]
, 2010 The understanding of the behaviour of the flow around surface protuberances in hypersonic vehicles is developed and an engineering approach to predict the location and magnitude of the highest heat transfer rates in their vicinity is presented.
Garry, Kevin P. +4 more
core +1 more source