Results 81 to 90 of about 73,982 (212)

The Harmonic Pitching NACA 0018 Airfoil in Low Reynolds Number Flow

Energies
This study investigates the aerodynamic performance of a symmetric NACA 0018 airfoil under harmonic pitching motions at low Reynolds numbers, a regime characterized by the presence of laminar separation bubbles and their impact on aerodynamic forces. The
Jan Michna, Maciej Śledziewski, Krzysztof Rogowski   +2 more
doaj   +1 more source

Users manual for coordinate generation code CRDSRA [PDF]

Generation of a viable coordinate system represents an important component of an isolated airfoil Navier-Stokes calculation. The manual describes a computer code for generation of such a coordinate system. The coordinate system is a general nonorthogonal
Shamroth, S. J.
core   +1 more source

High Reynolds number tests of a Boeing BAC I airfoil in the Langley 0.3-meter transonic cryogenic tunnel [PDF]

A wind tunnel investigation of an advanced-technology airfoil was conducted in the Langley 0.3-Meter Transonic Cryogenic Tunnel (TCT). This investigation represents the first in a series of NASA/U.X.
Butler, T. W., Hill, A. S., Johnson, W. G., Jr., Ray, E. J., Rozendaal, R. A.   +4 more
core   +1 more source

Low-Speed Aeroelastic Modeling of Very Flexible Slender Wings with Deformable Airfoils [PDF]

, 2008
Published ...
Cesnik, CES, Palacios, R
core   +2 more sources

The design of an airfoil for a high-altitude, long-endurance remotely piloted vehicle [PDF]

Airfoil design efforts are studied. The importance of integrating airfoil and aircraft designs was demonstrated. Realistic airfoil data was provided to aid future high altitude, long endurance aircraft preliminary design.
Maughmer, Mark D., Somers, Dan M.
core   +1 more source

Flow curvature effects on dynamic behaviour of a novel vertical axis tidal current turbine: numerical and experimental analysis [PDF]

, 2005
The paper deals with performances analysis of vertical axis turbine to exploit tidal marine currents. Flow curvature effects on performences of a novel vertical axis turbine have been investuigated. It has been shown that the flow curvature effect allows
COIRO, DOMENICO, DE MARCO, AGOSTINO, F. ,MONTELLA, NICOLOSI, FABRIZIO, S. ,MELONE   +4 more
core   +1 more source

Low-speed wind-tunnel results for symmetrical NASA LS(1)-0013 airfoil [PDF]

A wind-tunnel test has been conducted in the Langley Low-Turbulence Pressure Tunnel to evaluate the performance of a symmetrical NASA LS(1)-0013 airfoil which is a 13-percent-thick, low-speed airfoil.
Barnwell, Richard W., Ferris, James C., Mcghee, Robert J.   +2 more
core   +1 more source

Mars Science Helicopter Conceptual Design [PDF]

, 2020
Robotic planetary aerial vehicles increase the range of terrain that can be examined, compared to traditional landers and rovers, and have more near-surface capability than orbiters. Aerial mobility is a promising possibility for planetary exploration as
Balaram, Jayarao, Chan, Athena, Chi, Cheng, Datta, Anubhav, Escobar, Daniel, Fehler, Mireille E., Grip, Havard F., Johnson, Wayne R., Koning, Witold J., Kuang, Winnie, Lumba, Ravi, Malpica, Carlos, Tuano, Allysa Mae B., Tzanetos, Theodore, Withrow, Shannah N., Young, Larry A.   +15 more
core   +1 more source

Turbine heat transfer [PDF]

Objectives and approaches to research in turbine heat transfer are discussed. Generally, improvements in the method of determining the hot gas flow through the turbine passage is one area of concern, as is the cooling air flow inside the airfoil, and the
Rohde, J. E.
core   +1 more source

Transonic airfoil analysis and design in nonuniform flow [PDF]

A nonuniform transonic airfoil code is developed for applications in analysis, inverse design and direct optimization involving an airfoil immersed in propfan slipstream.
Chang, J. F., Lan, C. E.
core   +1 more source