Results 41 to 50 of about 81,958 (286)
Bogoliubov-Cherenkov Radiation in an Atom Laser [PDF]
Phys. Rev. A 97, 063601 (2018), 2017 We develop a simple yet powerful technique to study Bogoliubov-Cherenkov radiation by producing a pulsed atom laser from a strongly confined Bose-Einstein condensate. Such radiation results when the atom laser pulse falls past a Bose-Einstein condensate at high-hypersonic speeds, modifying the spatial profile to display a characteristic twin jet ...
arxiv +1 more source
Hypersonic Weapons-Part 1: Background and Vulnerability to Missile Defenses [PDF]
arXiv, 2023 Assessing the desirability of hypersonic glide vehicles (HGVs) requires understanding what capabilities they may provide compared to alternative systems that could carry out the same missions, particularly given the technical difficulties and additional costs of developing hypersonic gliders compared to more established technologies.
arxiv
An aerothermodynamic design optimization framework for hypersonic vehicles [PDF]
, 2018 In the aviation field great interest is growing in passengers transportation at hypersonic speed. This requires, however, careful study of the enabling technologies necessary for the optimal design of hypersonic vehicles.
Di Giorgio, Simone +3 more
core +1 more source
An Improved Method for Initial Sizing of Airbreathing Hypersonic Aircraft
Aerospace, 2023 One essential problem in aircraft conceptual design is initial sizing in which the aircraft primary parameters such as weight, size, and thrust are estimated for given design requirements.
Yalin Dai +3 more
doaj +1 more source
On the Görtler Vortex Instability Mechanism at Hypersonic Speeds [PDF]
Theoretical and Computational Fluid Dynamics, 1989 The linear instability of the hypersonic boundary layer on a curved wall is considered. As a starting point the viscosity of the fluid is taken to be a linear function of temperature and real-gas effects are ignored. It is shown that the flow is susceptible to Gortler vortices and that they are trapped in the logarithmically thin adjustment layer in ...
Yibin Fu, Philip Hall
openaire +2 more sources
Development of a high-fidelity computational tool for chemically reacting hypersonic flow simulations [PDF]
arXiv, 2022 In this paper, we present a methodology to achieve high-fidelity simulations of chemically reacting hypersonic flows and demonstrate our numerical solver's capabilities on a selection of configurations. The numerical tools are developed based on previous in-house codes for high-speed simulations with improvements in both numerical and physical modeling.
arxiv
Trajectory Estimation of Hypersonic Glide Vehicle Based on Analysis of Aerodynamic Performance
Xibei Gongye Daxue Xuebao, 2019 Due to high speed and high maneuverability of hypersonic glide vehicles (HGVs), the state estimation of such targets has always been a research hotspot.
doaj +1 more source
Prediction of aerothermal characteristics of a generic hypersonic inlet flow [PDF]
Theoretical and Computational Fluid Dynamics 36.2 (2022): 345-368, 2020 The accurate prediction of aerothermal surface loading is of paramount importance for the design of high speed flight vehicles. In this work, we consider the numerical solution of hypersonic flow over a double-finned geometry, representative of the inlet of an air-breathing flight vehicle, characterized by three-dimensional intersecting shock-wave ...
arxiv +1 more source
On upstream influence in supersonic flows [PDF]
, 2005 The general problem of propagation of three-dimensional disturbances in viscous supersonic flows is considered in the framework of characteristic analysis.
Krechetnikov, R., Lipatov, I. I.
core +1 more source
Experimental Investigation of Brazilian 14-X B Hypersonic Scramjet Aerospace Vehicle
International Journal of Aerospace Engineering, 2017 The Brazilian hypersonic scramjet aerospace vehicle 14-X B is a technological demonstrator of a hypersonic airbreathing propulsion system based on the supersonic combustion (scramjet) to be tested in flight into the Earth’s atmosphere at an altitude of ...
João Felipe de Araujo Martos +5 more
doaj +1 more source