Results 61 to 70 of about 2,332 (184)
Hurdle-Hop Simulation of Tilt-Rotor Aircraft Based on Optimal Control Theory
Xibei Gongye Daxue Xuebao, 2020 Aiming at simulating the hurdle-hop of tilt-rotor aircraft in forward flight near the ground, two models of numerical simulation and analysis based on optimal control theory were proposed.
doaj +1 more source
Pitch control optimisation of tiltrotor aircraft
, 2021 An investigation into the effects of rotary-wing and xed-wing control gearings for tiltrotor aircraft was undertaken. The work investigated the effects of different cyclic and elevator gearings (both prescribed and optimised) on the longitudinal trim behaviour through the conversion regime of ight. The numerical simulations were performed for the XV-15
Appleton, Wesley +3 more
openaire +1 more source
Whirl and Stall Flutter Simulation Using CFD [PDF]
, 2017 This paper presents recent research on numerical methods for whirl and stall flutter using computational fluid dynamics. The method involves coupling of the HMB3 CFD solver of the University of Glasgow and a NASTRAN derived structural model. Based upon
Barakos, George N., Higgins, Ross J.
core
Adaptive Surrogate-Based Optimization of Vortex Generators for a Tiltrotor Geometry [PDF]
, 2017 Design of vortex generators (VGs) on a tiltrotor aircraft infinite wing is presented using an adaptive surrogate modelling approach. Particular design issues in tiltrotors produce wings that are thick and highly loaded, so separation and early onset ...
Allen, Christian +3 more
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Multi-Fidelity Aerodynamic Optimization of the Wing Extension of a Tiltrotor Aircraft
Applied SciencesGiven the fast-evolving context of electrical vertical takeoff and landing vehicles (eVTOL) based on the concept of tiltrotor aircraft, this work describes a framework aimed at the preliminary aerodynamic design and optimization of innovative lifting ...
Alberto Savino
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Three-Dimensional Flight Envelope for V/STOL Aircraft with Multiple Flight Modes
Aerospace, 2022 Vertical or short take-off and landing (V/STOL) aircraft generally have three flight modes, namely, vertical take-off and landing (VTOL), conversion, and cruise, according to the variable angle of propulsion direction to the fuselage axis.
Tielin Ma +4 more
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A numerical study on active control for tiltrotor whirl flutter stability augmentation [PDF]
, 2004 The use of active control to augment whirl flutter stability of tiltrotor aircraft is studied by means of a multibody simulation. The numerical model is based on a 1/5 scale semi-span aeroelastic wind tunnel model of a generic tiltrotor concept and ...
Ferrer, Rogelio +4 more
core
Modelling and Simulation in High-Fidelity Crash Analysis of NGCTR-TD Composite Wing
AerospaceThis paper presents a methodology that involves the development of high-fidelity modeling and simulation procedures aimed at supporting virtual certification for crashworthiness requirements specific to tiltrotor aircraft, addressing the critical need ...
Luigi Di Palma +3 more
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Aerodynamic Shape Optimisation of a Proprotor and Its Validation by Means of CFD and Experiments [PDF]
, 2015 The aerodynamic shape design of a proprotor for a tiltrotor aircraft is a very complex and demanding task because it has to combine good hovering capabilities with high propeller efficiency.
Droandi, Giovanni, Gibertini, Giuseppe
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AerospaceTiltrotor aircraft, due to their vertical takeoff and landing capability and efficient high-speed cruise performance, are increasingly valuable in both modern military and civilian applications.
Hang Feng +3 more
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