Results 11 to 20 of about 365,625 (308)

Research on Sailing Efficiency of Hybrid-Driven Underwater Glider at Zero Angle of Attack

open access: yesJournal of Marine Science and Engineering, 2021
The sailing efficiency of an underwater glider, an important type of marine environment detection and data collection equipment, directly affects its range and duration.
Xin Tian, Lianhong Zhang, Hongwei Zhang
doaj   +1 more source

Flutter Boundary Prediction of a Two Dimensional Airfoil in Transonic Flight Regime with the Preset Angles of Attack [PDF]

open access: yesXibei Gongye Daxue Xuebao, 2018
Angle of attack has impact on transonic flow filed and aerodynamic force, but most of current researches on flutter use zero angle hypothesis, which has no consideration about angle of attack.

doaj   +1 more source

Thermal Protection Mechanism of a Novel Adjustable Non-Ablative Thermal Protection System for Hypersonic Vehicles

open access: yesAerospace, 2022
In order to improve the thermal protection performance of the active thermal protection system (TPS) based on the spike and jet, an adjustable non-ablative thermal protection system, of which the spike can be rotated in the direction of the free stream ...
Bin Chang, Jie Huang, Wei-Xing Yao
doaj   +1 more source

Research on fixed attack angle attack angle and height flying of hypersonic aircraft [PDF]

open access: yesAdvances in Computer Science Research, 2015
Attack angle is a most important factor that affect the stability of aircraft no matter for supersonic type or hypersonic type aircraft. And height is another factor that will affect the force and moment of the whole dynamic system by change the density of air and finally it will also affect the stability of the whole system. So in this paper a kind of
Junwei Lei, Heng Li, Guangbin Wu
openaire   +1 more source

Analysis of the Magnus Moment Aerodynamic Characteristics of Rotating Missiles at High Altitudes

open access: yesInternational Journal of Aerospace Engineering, 2021
The Magnus moment characteristics of rotating missiles with Mach numbers of 1.3 and 1.5 at different altitudes and angles of attack were numerically simulated based on the transition SST model.
Yihang Xu, Shaosong Chen, Hang Zhou
doaj   +1 more source

The influence of aspect ratio and attack angle on the field structure and dynamic characteristics of the flow around an ellipsoid [PDF]

open access: yesAIP Advances
The flow of an incompressible viscous fluid around an ellipsoid at a moderate Reynolds number (Re = 300) is numerically investigated, revealing a series of variation laws related to vortex shedding, flow separation, and the lift and drag coefficients as ...
Junwei Li   +10 more
doaj   +1 more source

The interaction between flow-induced vibration mechanisms of a square cylinder with varying angles of attack [PDF]

open access: yes, 2012
This study examines the influence of angle of attack of a square section cylinder on the cylinder’s flow-induced vibration, where the direction of the vibration is transverse to the oncoming flow.
Lo Jacono, David   +3 more
core   +4 more sources

Influence of attack angle on vortex-induced vibration and energy harvesting of two cylinders in side-by-side arrangement

open access: yesAdvances in Mechanical Engineering, 2019
The vortex-induced vibration and energy harvesting of two cylinders in side-by-side arrangement with different attack angles are numerically investigated using two-dimensional unsteady Reynolds-Averaged Navier–Stokes simulations.
Li Zhang, Xinru Mao, Lin Ding
doaj   +1 more source

Robust Pitch Autopilot Design Based on Logarithmic Barrier Lyapunov Method [PDF]

open access: yesHangkong bingqi
When the phased array radar-guided missile intercepts a high speed target with large maneuvering, the aerodynamic parameters of the missile body vary dramatically and become nonlinear, which affects the response of the control system to the large angle ...
Wang Wei, Yang Jing, Lin Shiyao, Wang Hong, Wang Shaolong
doaj   +1 more source

Determination of the operational parameters values for Airbus A300-600ST Beluga aircraft on the basis of CFD tests [PDF]

open access: yesMATEC Web of Conferences, 2022
The article presents a method for estimating the values of basic operational and aerodynamic parameters of an aircraft. It contains a multistage analysis of CFD test results for the Beluga Airbus A300-600ST model.
Nowacki Marcin, Olejniczak Damian
doaj   +1 more source

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