General aviation is an important branch of the field. As a green energy aircraft, electric aircraft component and development direction general its safety crucial. In this paper, aerodynamic dynamic characteristics under collision, lightning strikes, icing conditions are studied, kinematics models established by introducing damage factors. The STAR-CCM+ software used to simulate force moment in...

‎let $m^n$ be an $n(ngeq 3)$-dimensional complete connected and‎ ‎oriented spacelike hypersurface in a de sitter space or an anti-de‎ ‎sitter space‎, ‎$s$ and $k$ be the squared norm of the second‎ ‎fundamental form and gauss-kronecker curvature of $m^n$‎. ‎if $s$ or‎ ‎$k$ is constant‎, ‎nonzero and $m^n$ has two distinct principal‎ ‎curvatures one of which is simple‎, ‎we obtain some‎ ‎charact...

In this paper, a comparative assessment is made based on time domain specifications and erro r criteria between various types of controllers like conventional PID, and heuristic approaches like FA, P SO and BFO based PID and I-PD structured controllers. The dynamic modelling of pitch control system i s considered on the design of an auto pilot that controls the pitch angle. To study the effecti...

TAILTEST 9th call of the CS2 project started in 2019 year is aimed at development a multipurpose test rig for validation an innovative rotorcraft vertical tail. It conducted Czech Aerospace Research Centre (VZLU) as coordinator cooperating with Greek Athena centre (Athena RC) participant. The was initiated by Fokker Aerostructure Company and part chain contributing to conceptual aircraft type N...

We present ground-based, advected aircraft engine emissions from flights taking off at Los Angeles International Airport. 275 discrete engine take-off plumes were observed on 18 and 25 May 2014 at a distance of 400 m downwind of the runway. CO2 measurements are used to convert the aerosol data into plume-average emissions indices that are suitable for modelling aircraft emissions. Total and non...

This paper highlights a novel approach to stabilizing and controlling pitch and yaw motion via a set of horizontal tail that can act as elevator and rudder. The tail is incorporated into a new design of blended wing body (BWB) aircraft, known as Baseline-V, located just aft of the trailing edge of its inboard wing. The proposed close-coupled tail is equipped with elevators that deflect in uniso...

The optimisation of a tail-sitter UAV (Unmanned Aerial Vehicle) that uses a stall-tumble manoeuvre to transition from vertical to horizontal flight and a pull-up manoeuvre to regain the vertical is investigated. The tandem wing vehicle is controlled in the hover and vertical flight phases by prop-wash over wing mounted control surfaces. It represents an innovative and potentially simple solutio...

We describe an experimental platform for testing the DarkO tail-sitter drone in open wind tunnel experiment. The convertible UAV is developed and 3D printed at Ecole Nationale de l'Aviation Civile (ENAC), Toulouse (France). objective of to allow control laws a realistic secure context. propose test bench with single degree freedom corresponding pitch axis. design linear proportional/integral fe...