... the development of ultralight polymer-based launch vehicles (LVs) using autophage propulsion systems. Design/methodology/approach Computational fluid dynamics ( CFD ) simulations were performed using Reynolds-Averaged Navier–Stokes equations with the Spalart–Allmaras turbulence model. The flow around cone...

...Antoni Kopyt; Kacper Kaczmarek; Mateusz Sochacki; Marek Polewski Purpose Simulation of urban air mobility ( UAM ) is a growing challenge – especially considering the risks of aircraft collisions. This study shows the importance of a simulation of a large number of vertical take-off and landing...

...Xu Zou; Zhenbao Liu; Wen Zhao; Lina Wang Purpose A high-fidelity simulation platform helps to verify the feasibility of the controller and reduce the cost of subsequent experiments. Therefore, this paper aims to design a high-fidelity hardware-in-the-loop (HIL) simulation platform for the tail...

... is established for landing simulation, where the nonlinear large-deformation flexible buffer rods are equivalently modeled with a rigid-body mechanism with external forces and movement limit. Sensitivities of the landing stability to various landing conditions are analyzed using the Quasi–Monte-Carlo-based Sobol...

...” fixed-wing UAV are proposed. Research limitations/implications More complicated situations, such as strong wind conditions, need another kind of models, usually based on finite element method simulation. These particular models apply fluid dynamics to study aerostructural aircraft aspects...

.... Then, the PID controller is implemented in the simulation model to control flight maneuvers. The model parameters were implemented in a mathematical model to find the system’s stability for various flight conditions. The model was linearized to determine the PID gain values for vertical take-off and landing...

...Matteo Davide Lorenzo Dalla Vedova; Pier Carlo Berri Purpose The purpose of this paper is to propose a new simplified numerical model, based on a very compact semi-empirical formulation, able to simulate the fluid dynamics behaviors of an electrohydraulic servovalve taking into account several...

... real-time simulations. Findings The comparison results of baseline and proposed route model show that a reduction of 38% and 41% in the total flight time and total flight distance were obtained in favour of the proposed model, respectively. Practical implications The proposed route model can...

...-order dynamic time response, time-delay, bias torques, dead-zones and saturation. The actuator module can make the simulation as close to the practical situation as possible. Findings This paper presents a practical integrated module for the simulation of attitude control algorithms. Based...

... into consideration the key parameters to design flight procedures. Both tracks were assessed in a real-time simulation method. Moreover, unmanned vehicle simulation was used for a validation process. Findings According to the real-time simulation results, 8.14 NM and 6.64 NM of flight distance and 5.43 min...

...Ainslie French; Luigi Cutrone; Antonio Schettino; Marco Marini; Francesco Battista; Pasquale Natale Purpose This paper aims to detail the reactive flow simulations of a LOX/CH4 multi-element rocket engine. The work has been conducted within the framework of the HYPROB-BREAD project whose main...

... propeller-wing flow field. Simulations of ATR42 take-off model are conducted in the following three modes: propeller-wing interaction is ignored; influence of propeller on wing is considered only; and propeller-wing interaction is considered. Findings Comparison of take-off distances and flight...

... position errors between true and detected positions. Operators must understand and account for the characteristics on magnitude and frequency of the position errors in the surveillance systems because these errors can influence the safety of aircraft operation. This study aims to develop the simulation...

... Various egress options were explored through simulation in a computational fluid dynamics (CFD) software using aircraft 3D CAD model and scalable digital mannequins. For this, certain important contingencies which best describe the extreme aircraft behaviour were identified. Crew escape options, which...

...Yasser A. Nogoud; Attie Jonker; Shuhaimi Mansor; A.A.A. Abuelnuor Purpose This paper aims to propose a spreadsheet method for modeling and simulation of a retraction system mechanism for the retractable self-launching system for a high-performance glider. Design/methodology/approach More...

... of the investigation is devoted to the verification of the simplified methods used to identify the aircraft recoverability from spinning steady-state turns and estimate the primary post-stall flight parameters. Then, the spin simulations were executed. The computational results were thereafter compared...

... and sensors. The nonlinear simulation including the missile dynamic model set up for certain scenarios were formed by using MATLAB/SIMULINK. The nonlinear simulation includes navigation model, guidance and autopilot algorithm designing for more than one trim condition. (12) l = Q...

... to conventional hardware-in-the-loop environments. Practical implications The presented simulation environment allows operating the components under realistic conditions by offering a control surface setup with redundant electromechanical actuators and a torque machine for hinge load simulation. It supports...

... velocity. The ways of simplifying identification algorithms and filtering for the purpose of their practical implementation are shown. Findings – This paper presents the research results on the effectiveness of the proposed algorithms. Results of simulation are used to confirm the effectiveness...

... (GEO) and the orbit whose apogee is 300 km above GEO are chosen as the initial and target orbit, respectively. Simulations are conducted to study the deorbiting results considering a variety of parameters and initial conditions. Findings – The distinctive dynamic characteristics of tether-net...