Results 41 to 50 of about 1,519 (231)
Fractional-Order Sliding Mode Guidance Law for Intercepting Hypersonic Vehicles
Aerospace, 2022 This paper addresses the problem of a low-speed missile intercepting a hypersonic vehicle in the longitudinal plane. Firstly, based on the concept of the zero of the angular rate of the line-of-sight (LOS) angle, the guidance system is established by ...
Shuangxi Liu +4 more
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Advanced Intelligent Systems, EarlyView.This review systematically analyzes deformable drones, including extendable, foldable, and tilting configurations, along with nature‐inspired flapping rotorcraft. By classifying deformation principles and structural mechanisms, design trade‐offs, functional capabilities, and future development potential are highlighted.
Ju‐Hee Lee +9 more
wiley +1 more source
Impact-Time-Control Guidance Law for Hypersonic Missiles in Terminal Phase
IEEE Access, 2020 Recent researches on hypersonic vehicles adopted in military have gained a lot of interest because of its high flight speed and efficiency. However the guidance laws for hypersonic missiles against the anti-missile system to increase survivability and ...
Chenhao Zhu +4 more
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Carbon Energy, EarlyView.Traditional carbon materials show limited high‐temperature oxidation resistance, which becomes pronounced above 673 K and significantly restricts their practical applicability. To address this challenge, enhancing polarization loss and leveraging its negative temperature dependence to offset the temperature‐induced increase in conductance loss are ...
Yang Li +9 more
wiley +1 more source
An examination of high-speed aircraft – Part 2: Safety and reliability
Transportation EngineeringThis paper presents a detailed accident investigation into incidents involving high-speed vehicles, particularly supersonic and hypersonic platforms.
Luke Pollock, Graham Wild
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Small, EarlyView.A scalable, solution‐processed route unlocks the full SnSxSe(2–x) alloy spectrum, delivering finely tunable optical and electronic properties—from metallic‐like SnSe2 to wide‐bandgap SnS2. Composition‐guided control over in‐ and out‐of‐plane transport enables performance‐optimized photoelectrochemistry, charting a versatile roadmap for designer ...
Nicolas J. Diercks +12 more
wiley +1 more source
Research Status and Development of Adaptive Control Technology for Hypersonic Aircraft [PDF]
Hangkong bingqiThe future war presents a development trend of “intelligence and multidimensionality”, and conventional control technology is difficult to adapt to wide speed range flight conditions.
Tao Yixuan, Li Zihao, Huang Wei
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Collaborating in future states—Contextual instability, paradigmatic remaking, and public policy
Australian Journal of Public Administration, EarlyView.Abstract Collaboration is ubiquitous in public policy life, with its presence and profile determined by prevailing governance conditions. Commitments to globalisation and marketisation in the latter part of the 20th century marked the onset of an era defined by collaboration, between and across tiers and spheres of government, with non‐state actors ...
Helen Sullivan
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气体物理The oblique forward jet from the rear body serves as an effective mechanism for achieving rapid separation between the front and rear stages of an aircraft.
Yang WANG, Xinyu SONG, Shengyi WANG
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Aerospace, 2023 In this paper, aimed at the problem of large temperature gradient thermal testing with the typical sharp wedge leading edge structure of a hypersonic vehicle, a subsonic high-temperature combustion gas heating (SHCH) test device is used to conduct a ...
Ri Wang +5 more
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