Results 31 to 40 of about 3,085,452 (343)
Effects of Heat Addition on Wave Drag Reduction of a Spiked Blunt Body
International Journal of Aerospace Engineering, 2021 Drag reduction technology plays a significant role in extending the flight range for a high-speed vehicle. A wave drag reduction strategy via heat addition to a blunt body with a spike was proposed and numerically validated.
Hongyu Wang +4 more
doaj +1 more source
Drag Characteristics for Optimally Span-Loaded Planar, Wingletted, and C Wings
Journal of Aircraft, 2008 This paper focuses on the drag characteristics of optimally span-loaded planar, wingletted, and C wings. The span load is optimized resulting in minimum induced or total drag. The wing-root bending moment is kept constant for all analyzed wings to ascertain that different wings have comparable weight.
Slingerland, R. (author) +1 more
openaire +3 more sources
Is the critical Shields stress for incipient sediment motion dependent on channel-bed slope? [PDF]
, 2008 Data from laboratory flumes and natural streams show that the critical Shields stress for initial sediment motion increases with channel slope, which indicates that particles of the same size are more stable on steeper slopes.
Dietrich, William E. +2 more
core +1 more source
Simulation of tail boom vibrations using main rotor-fuselage Computational Fluid Dynamics (CFD) [PDF]
, 2017 In this work, fully-resolved rotor-fuselage interactional aerodynamics is used as the forcing term in a model based on the Euler-Bernoulli equation, aiming to simulate helicopter tail-boom vibration.
Barakos, George N. +4 more
core +2 more sources
Drag Reduction of a Pipe Flow Using Suspensions
Advances in Mechanical Engineering, 2014 The addition of drag-reducing agents to reduce pipe friction loss has attracted attention as a method to conserve energy. In addition to reducing drag, these agents are required to have a low environmental load and conserve natural resources.
Satoshi Ogata +3 more
doaj +1 more source
Aerodynamic Optimization Design of Supersonic Wing Based on Discrete Adjoint
Aerospace, 2023 Reducing fuel consumption and improving the economy by effectively reducing cruising drag is the main objective of the aerodynamic design of supersonic civil aircraft.
Hanyue Rao +5 more
doaj +1 more source
Structural Stability Analysis of Underwater High-Speed Moving Vehicles in Supercavity Flow Velocity
Aerospace, 2023 The purpose of this paper is to analyze the structural stability of an underwater high-speed vehicle. The drag characteristics of a moving body moving at high speed in water were analyzed, and a stability analysis of the structure was performed by ...
Kyungwon Oh, Seonghee Kho
doaj +1 more source
Study of a C-wing configuration for passive drag and load alleviation [PDF]
Journal of Fluids and Structures, 2018 Non-planar wing configurations are often hypothesised as a means for improving the\ud aerodynamic efficiency of large transport aircraft; C-wings may have the ability to exploit\ud and unify drag reduction, aeroelasticity, and dynamics and control but their capacity to do\ud so is ambiguous.
Skinner, S.N., Zare-Behtash, H.
openaire +2 more sources
An experimental investigation into the constant velocity water entry of wedge-shaped sections [PDF]
, 2008 Constant velocity water entry is important in understanding planing and slamming of marine vessels. A test rig has been developed that drives a wedge section with end plates down guides to enter the water vertically at near constant velocity. Entry force
Fairlie-Clarke, A.C. +2 more
core +1 more source
Journal of Physics: Conference Series, 2020 For the simulation of the coupled dynamic response of floating offshore wind turbines, it is crucial to calibrate the hydrodynamic damping with experimental data.
M. Böhm +4 more
semanticscholar +1 more source