Low-complexity hypersonic flight control with asymmetric angle of attack constraint
Sign Up to like & getrecommendations! Published in 2020 at "Nonlinear Dynamics"
DOI: 10.1007/s11071-020-05531-8
Abstract: This study investigates the longitudinal flight control problem of air-breathing hypersonic vehicles subject to the asymmetric angle of attack (AoA) constraint. With the help of introduced tangent errors, the proposed control becomes low complexity in… read more here.
Keywords: asymmetric angle; angle attack; control; constraint ... See more keywords
Unsteady Study on the Effects of Matching Characteristic of Tandem Cascade on the Performance and Flow at Large Angle of Attack
Sign Up to like & getrecommendations! Published in 2018 at "Journal of Thermal Science"
DOI: 10.1007/s11630-018-1017-0
Abstract: To investigate the effects of matching characteristics of tandem cascade on the performance and flow at large angle of attack, the unsteady numerical simulation has been implemented. The influences of different turning angle ratio (TR)… read more here.
Keywords: angle attack; tandem cascade; performance; effects matching ... See more keywords
Heat reduction mechanism of hypersonic spiked blunt body with installation angle at large angle of attack
Sign Up to like & getrecommendations! Published in 2019 at "Acta Astronautica"
DOI: 10.1016/j.actaastro.2019.07.003
Abstract: Abstract The spiked blunt body is usually adopted to reduce the aerodynamic heating of hypersonic vehicles. In this paper, the heat reduction mechanism of hypersonic spiked blunt body with installation angle at large angle of… read more here.
Keywords: angle attack; blunt body; body; installation angle ... See more keywords
Critical angle of attack and the corresponding impact cavity for non-circuitous trajectory of water entry of circular cylinder
Sign Up to like & getrecommendations! Published in 2020 at "Applied Ocean Research"
DOI: 10.1016/j.apor.2020.102322
Abstract: Abstract The critical initial angle of attack that the cylinder can move along the non-circuitous trajectory in water entry is investigated experimentally and numerically. A primary focus is on characterizing the relationship between the initial… read more here.
Keywords: angle attack; cylinder; water entry;
CFD simulation of flow around angle of attack and sideslip angle vanes on a BAe Jetstream 3102 - Part 1
Sign Up to like & getrecommendations! Published in 2017 at "Aerospace Science and Technology"
DOI: 10.1016/j.ast.2017.03.015
Abstract: Abstract CFD modelling techniques are exploited to investigate the local velocity field around angle of attack and sideslip angle sensors fitted to the nose of a modified BAe Jetstream 3102 small airliner. Analysis of the… read more here.
Keywords: angle; angle attack; attack sideslip; jetstream ... See more keywords
Influence of Mach number and angle of attack on the two-dimensional transonic buffet phenomenon
Sign Up to like & getrecommendations! Published in 2018 at "Aerospace Science and Technology"
DOI: 10.1016/j.ast.2018.03.045
Abstract: Abstract Within a narrow band of flight conditions in the transonic regime, self-sustained shock oscillations that involve the interaction between shock-waves and intermittently separated shear layers may develop. This phenomenon, known as transonic shock buffet,… read more here.
Keywords: buffet; angle attack; influence mach; mach number ... See more keywords
Subsonic impulsively starting flow at a high angle of attack with shock wave and vortex interaction
Sign Up to like & getrecommendations! Published in 2018 at "Chinese Journal of Aeronautics"
DOI: 10.1016/j.cja.2018.06.019
Abstract: Abstract Impulsively starting flow, by a sudden attainment of a large angle of attack, has been well studied for incompressible and supersonic flows, but less studied for subsonic flow. Recently, a preliminary numerical study for… read more here.
Keywords: angle attack; starting flow; shock;
A comprehensive survey on the methods of angle of attack measurement and estimation in UAVs
Sign Up to like & getrecommendations! Published in 2020 at "Chinese Journal of Aeronautics"
DOI: 10.1016/j.cja.2019.11.003
Abstract: Abstract Angle of Attack (AOA) is a crucial parameter which directly affects the aerodynamic forces of an aircraft. The measurement of AOA is required to ensure a safe flight within its designed flight envelop. This… read more here.
Keywords: comprehensive survey; angle attack; measurement; estimation ... See more keywords
A Simple Method for Estimation of Angle of Attack
Sign Up to like & getrecommendations! Published in 2018 at "IFAC-PapersOnLine"
DOI: 10.1016/j.ifacol.2018.05.048
Abstract: Abstract During the recent years, researchers are attempting to fly Mini Aerial Vehicles (MAV) in highly unconventional missions and constrained space. As a result, the Angle of Attack (AOA) becomes a very critical quantity for… read more here.
Keywords: attack; angle attack; method estimation; estimation angle ... See more keywords
From flapping to heaving: A numerical study of wings in forward flight
Sign Up to like & getrecommendations! Published in 2018 at "Journal of Fluids and Structures"
DOI: 10.1016/j.jfluidstructs.2018.09.006
Abstract: Abstract Direct Numerical Simulations of the flow around a pair of flapping wings are presented. The wings are flying in forward flight at a Reynolds number R e = 500 , flapping at a reduced… read more here.
Keywords: forward flight; radius flapping; angle attack; flapping heaving ... See more keywords
Experimental study on the influence of the angle of attack on cavity evolution and surface load in the water entry of a cylinder
Sign Up to like & getrecommendations! Published in 2020 at "Ocean Engineering"
DOI: 10.1016/j.oceaneng.2020.108271
Abstract: Abstract The characteristics of cavity evolution and surface load in water entry by a constrained-posture cylinder at different angles of attack are experimentally investigated. High-speed photography is used to capture flow behaviors, and a measurement… read more here.
Keywords: angle attack; water; surface; cavity ... See more keywords