Results 121 to 130 of about 4,258 (219)

Co-design Optimization of a Novel Multi-identity Drone Helicopter (MICOPTER). [PDF]

J Intell Robot Syst, 2022
Abedini A, Bataleblu AA, Roshanian J.
europepmc   +1 more source

Vorticity-transport and unstructured RANS investigation of rotor-fuselage interactions [PDF]

, 2009
The prediction capabilities of unstructured primitive-variable and vorticity-transport-based Navier-Stokes solvers have been compared for rotorcraft-fuselage interaction.
Brown, Richard, Kenyon, Adam R., Shenoy, Rajiv, Smith, Marilyn J.   +3 more
core  

Modeling and Simulation of Coaxial Helicopter Rotor Aerodynamics

, 2009
A framework is developed for the computational fluid dynamics (CFD) analyses of a series of helicopter rotor flowfields in hover and in forward flight. The methodology is based on the unsteady solutions of the three-dimensional, compressible Navier-Stokes equations recast in a rotating frame of reference.
openaire   +2 more sources

Dynamic modeling and analysis of the rotor-stator coupling system of a coaxial contra-rotating gearbox. [PDF]

Sci Rep, 2023
Zhang D, Cui J, Zhu R, Li M.
europepmc   +1 more source

Dynamic Electromagnetic Scattering Simulation of Tilt-Rotor Aircraft in Multiple Modes. [PDF]

Sensors (Basel), 2023
Fei Z, Yang Y, Jiang X, Zhao Q, Chen X.
europepmc   +1 more source

Comprehensive and Validated Computational Investigations of Structural Integrity, Aerodynamic Behavior, and Its Turbulence Characteristics on Agricultural Drone with and without Payload Devices

Journal of Engineering
In recent years, multirotor unmanned aerial vehicles (MRUAVs) have seen increased investment and deployment for various novel uses, including intruder surveillance, agro farming, and crack detection in severe environments.
Beena Stanislaus Arputharaj, Shyam Sundar Jayakumar, Senthil Kumar Solaiappan, Vijayanandh Raja, Parvathy Rajendran, Maheswari Krishnamoorthy, Hari Prasath Jeyaraj, Senthil Kumar Madasamy, Ragavendra Thaiyan Rajendran, Ali Mahmood Ahmed   +9 more
doaj   +1 more source

A Study of Coaxial Rotor Performance and Flow Field Characteristics [PDF]

As a precursor to studying the acoustics of a coaxial rotor system, the aerodynamics and flow field of a coaxial rotor were simulated to better understand the interaction between the two rotors.
Barbely, Natasha L., Komerath, Naranyanan M., Novak, Luke A.   +2 more
core   +1 more source

Improvement of the Airflow Energy Harvester Based on the New Diamagnetic Levitation Structure. [PDF]

Micromachines (Basel), 2023
Zhang L, Shao H, Zhang J, Liu D, Aw KC, Su Y.   +5 more
europepmc   +1 more source

COAXIAL ROTOR SYSTEMS – CHARACTERISTICS AND PERFORMANCES

SCIENTIFIC RESEARCH AND EDUCATION IN THE AIR FORCE, 2018
Constantin ROTARU, Janel TANASE, Oliver CIUICA, Eduard MIHAI   +3 more
openaire   +1 more source

Acoustic measurements of a full-scale coaxial hingeless rotor helicopter [PDF]

Acoustic data were obtained during a full-scale test of the XH-59A Advancing Blade Concept Technology Demonstrator in the 40- by 80-Foot Wind Tunnel. The XH-59A is a research helicopter with two coaxial rotors and hingeless blades. Performance, vibration,
Mosher, M., Peterson, R. L.
core   +1 more source