Results 91 to 100 of about 19,013 (214)

Towards High-order Methods for Rotorcraft Applications [PDF]

, 2017
This work presents CFD results obtained with an efficient, high-order, finite-volume scheme. The formulation is based on the variable extrapolation MUSCL-scheme, and high-order spatial accuracy is achieved using correction terms obtained through ...
Barakos, George N., Jimenez-Garcia, Antonio   +1 more
core  

A teleoperated unmanned rotorcraft flight test technique [PDF]

NASA and the U.S. Army are jointly developing a teleoperated unmanned rotorcraft research platform at the National Aeronautics and Space Administration (NASA) Langley Research Center.
Hodges, W. Todd, Phelps, Arthur E., III, Walker, Gregory W.   +2 more
core   +1 more source

Advances in understanding autogyro flight dynamics [PDF]

, 2008
A comprehensive flight dynamics study of the autogyro is presented in this paper. A state of the art generic simulation of the vehicle type was developed and validated against flight data.
Houston, S., Thomson, D.G.
core  

REXOR 2 rotorcraft simulation model. Volume 1: Engineering documentation [PDF]

A rotorcraft nonlinear simulation called REXOR II, divided into three volumes, is described. The first volume is a development of rotorcraft mechanics and aerodynamics.
Kretsinger, P. H., Reaser, J. S.
core   +1 more source

Conceptual Study of a Manned European Martian Rotorcraft for Passenger and Cargo Transport in Future Mars Missions

Aerospace
This work presents a space-oriented extension of an existing research program focused on developing innovative approaches and design solutions for rotorcraft. The study builds upon recent research conducted at the Military University of Technology, where
Jakub Kocjan, Robert Rogólski, Stanisław Kachel, Łukasz Kiszkowiak   +3 more
doaj   +1 more source

Design and Simulation Verification of Model Predictive Attitude Control Based on Feedback Linearization for Quadrotor UAV

Applied Sciences
The flight dynamics of quadrotor UAVs are characterized by significant nonlinearity and inter-axis coupling, posing challenges for the direct application of linear control theory in flight control system design.
Xingyu Yuan, Jinfa Xu, Shengwei Li
doaj   +1 more source

An rVPM-Based Aerodynamic Hybrid Optimization Method for Coaxial Rotor with Differentiated Upper and Lower Blades in Both Hover and High-Speed Cruising States

Aerospace
To enhance the performance of rigid coaxial rotors across both hovering and high-speed cruising conditions, this study develops a novel aerodynamic optimization method that differentiates between the upper and lower rotors. Utilizing the lifting line and
Zhiwei Ding, Dengyan Duan, Chaoqun Zhang, Jianbo Li   +3 more
doaj   +1 more source

Research on Distributed Jet Blowing Wing Based on the Principle of Fan-Wing Vortex-Induced Lift and Thrust

International Journal of Aerospace Engineering, 2019
Based on the numerical calculation and analysis of the principle of the lift and thrust of the Fan-wing. A new scheme for the wing of Fan-wing aircraft-distributed jet blowing wing was presented.
Du Siliang, Zhao Qijun, Wang Bo
doaj   +1 more source

Rotorcraft aviation icing research requirements: Research review and recommendations [PDF]

The status of rotorcraft icing evaluation techniques and ice protection technology was assessed. Recommendations are made for near and long term icing programs that describe the needs of industry.
Bevan, A., Dadone, L., Peterson, A. A.
core   +1 more source

Frustrated Total Internal Reflection Measurement System for Pilot Inceptor Grip Pressure. [PDF]

Sensors (Basel), 2023
Zanoni A, Garbo P, Masarati P, Quaranta G.   +3 more
europepmc   +1 more source