Results 31 to 40 of about 80,594 (224)

Research Progress and Prospect of Thermal Flutter of Hypersonic Vehicles

open access: yesHangkong gongcheng jinzhan, 2022
Hypersonic vehicle is subjected to severe aerodynamic load and aerodynamic heating during the flight.Thus structural dynamic stability and response caused by aerodynamic force and aerodynamic heating should be fully considered in the design process of ...
CHEN Haoyu   +3 more
doaj   +1 more source

Numerical Simulation of Aerodynamic Heating and Its Ground Test Simulation Technology [PDF]

open access: yesHangkong bingqi, 2023
Numerical simulation and related experimental research on supersonic aerodynamic heating are important contents in the development of hypersonic vehicles.
Sun Dechuan, Li Shuyue
doaj   +1 more source

On the investigation of oblique shock‐wave/turbulent boundary‐layer interactions with a high‐order discontinuous Galerkin method

open access: yesInternational Journal for Numerical Methods in Fluids, Volume 94, Issue 8, Page 1331-1357, August 2022., 2022
(1) We firstly investigate the accuracy and efficiency of the high‐order discontinuous Galerkin spectral element method for the implicit large eddy simulation in oblique shock‐wave/turbulent boundary‐layer interaction. (2) We propose a new idea of improving the shock‐capturing capability of the classic Jameson shock indicator by employing a spatial ...
Min Gao   +2 more
wiley   +1 more source

The Aerodynamic Characteristics of a Diamond Joined‐Wing Morphing Aircraft

open access: yesInternational Journal of Aerospace Engineering, Volume 2022, Issue 1, 2022., 2022
This paper presents a new‐concept aircraft with a diamond joined‐wing morphing configuration, which simultaneously adjusts the sweep angles of both the front wing and rear wings by a telescopic support rod. The compressible Navier‐Stokes equations in the conservative form are solved to analyze the configuration characteristics and the aerodynamic ...
Shuai Miao   +5 more
wiley   +1 more source

Noise level effect on the hypersonic boundary layer

open access: yesAdvances in Mechanical Engineering, 2023
The boundary layer state has a critical effect on hypersonic vehicle performance and the noise level is the main factor causing the differences between the boundary layer transition in a wind tunnel test and that in a real flight.
Xinguo Sha   +4 more
doaj   +1 more source

Fuzzy Adaptive Prescribed Performance Fault‐Tolerant Control for HFVs with Fixed‐Time Convergence Guarantee

open access: yesInternational Journal of Aerospace Engineering, Volume 2022, Issue 1, 2022., 2022
A new fixed‐time fuzzy adaptive fault‐tolerant control methodology is proposed for the longitudinal dynamics of hypersonic flight vehicles (HFVs) in the presence of actuator faults, uncertain dynamics, and external disturbances. In contrast with the conventional fixed‐time control schemes that typically contain the fractional powers of errors in their ...
Zehong Dong   +5 more
wiley   +1 more source

Large‐Slenderness‐Ratio Supersonic Aircraft Lateral–Directional Coupling Dynamics Analysis and Control

open access: yesInternational Journal of Aerospace Engineering, Volume 2022, Issue 1, 2022., 2022
Large‐slenderness‐ratio aircraft in which a large portion of the aircraft’s mass is concentrated along its centreline face the problem of severe lateral‐directional coupling. Previous research has not fully considered the inertia product when conducting stability analyses of such aircraft. However, neglecting the inertia product may threaten the safety
Huitao Lyu   +5 more
wiley   +1 more source

Research on Flow Characteristics of a Variable Mach Number Aerodynamic Test Device by a Rotating Profile

open access: yesInternational Journal of Aerospace Engineering, Volume 2022, Issue 1, 2022., 2022
In the development process of aircraft, it needs to be tested in different incoming flow environments. Therefore, the test equipment that can provide a wide Mach number range and a fast‐response flow field has always been a research hotspot. In this paper, a variable Mach number aerodynamic test device by a rotating profile is constructed with a ...
Zaicheng Chen   +4 more
wiley   +1 more source

Numerical Study on Effects of Arrayed Pulsed Energy Depositions on a Supersonic Combustor

open access: yesInternational Journal of Aerospace Engineering, Volume 2022, Issue 1, 2022., 2022
This paper proposes a method to improve the mixing efficiency of a supersonic combustor by using arrayed pulsed energy depositions, and this method is verified by a numerical simulation. In the simulation, the Navier‐Stokes equations with an energy source are solved to simulate the effects of energy depositions in various distributions on the fuel ...
Zilin Cai   +4 more
wiley   +1 more source

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