The goal of this investigation is to study the effect of wing sweep angle on the horizontal wing-body- tail configurations in subsonic flow. For this purpose, a series of wind tunnel tests were conducted on a model having a moveable horizontal tail and a wing planform with different sweep angles. Tests were performed at different tail deflection angles. Static surface pressure distribution over...

The center of mass (COM) of a flying animal accelerates through space because of aerodynamic and gravitational forces. For vertebrates, changes in the position of a landmark on the body have been widely used to estimate net aerodynamic forces. The flapping of relatively massive wings, however, might induce inertial forces that cause markers on the body to move independently of the COM, thus mak...

In this study, a structurally different drop wing geometry was modelled and its mechanical behaviour investigated with computer aided analysis software within the finite element method. The tip of consists one large other small circles. There were linear line profiles between them. order to prevent collapse in plate structure, profile rigid body structure created effect investigated. length thi...

An assessment of 3D-printed span-change structures is presented for determining suitability the technology to small unmanned aerial vehicles. Materials and manufacturing technologies were used with an emphasis on near term applicability design trades between aerodynamic performance structural response. Aerodynamic was assessed three wind tunnel models varying span (432, 600, 762 mm), speed (Rey...

An experimental investigation of the wake of an Unmanned Aerial Vehicle (UAV) model using flow visualization techniques and a 3D Laser Doppler Anemometry (LDA) system is presented in this work. Emphasis is given on the flow field at the wingtip and the investigation of the tip vortices. A comparison of the velocity field is made with and without winglet devices installed at the wingtips. The ex...

This paper focuses on the triaxial augmentation ability of active disturbance rejection control (ADRC) technique tailless layout with a fully moving wing tip to achieve high performance for supersonic aircraft. Firstly, stability characteristics and controllability flying are analyzed determine coupling this kind Secondly, an attitude controller is designed based ADRC theory, linear frequency d...