Results 81 to 90 of about 84,328 (206)

Cruise aerodynamics of USB nacelle/wing geometric variations [PDF]

open access: yes
Experimental results are presented on aerodynamic effects of geometric variations in upper surface blown nacelle configurations at high speed cruise conditions.
Braden, J. A.   +2 more
core   +1 more source

Planetesimal-driven planet migration in the presence of a gas disk

open access: yes, 2010
We report here on an extension of a previous study by Kirsh et al. (2009) of planetesimal-driven migration using our N-body code SyMBA (Duncan et al., 1998). The previous work focused on the case of a single planet of mass Mem, immersed in a planetesimal
Adachi   +38 more
core   +1 more source

Drag Reduction Obtained by the Addition of a Boattail to a Box Shaped Vehicle [PDF]

open access: yes
Coast down tests were performed on a box shaped ground vehicle used to simulate the aerodynamic drag of high volume transports such as delivery vans, motor homes and trucks.
Peterson, R. L.
core   +1 more source

Aerodynamic tests and analysis of a turbojet-boosted launch vehicle concept (spacejet) over a Mach number range of 1.50 to 2.86 [PDF]

open access: yes
Results from analytical and experimental studies of the aerodynamic characteristics of a turbojet-boosted launch vehicle concept through a Mach number range of 1.50 to 2.86 are presented.
Morris, O. A.   +2 more
core   +1 more source

Cluster-based feedback control of turbulent post-stall separated flows

open access: yes, 2018
We propose a novel model-free self-learning cluster-based control strategy for general nonlinear feedback flow control technique, benchmarked for high-fidelity simulations of post-stall separated flows over an airfoil. The present approach partitions the
Brunton, Steven L.   +5 more
core   +1 more source

Aerodynamic drag measurement of American footballs

open access: yesProcedia Engineering, 2012
AbstractThe flight trajectory of an American football largely depends on its aerodynamic characteristics. Despite the popularity of the game, it appears that little information on the aerodynamic force experienced by an American football, especially under crosswinds is available in the open literature.
Alam, Firoz   +3 more
openaire   +1 more source

Two-Stage Multi-Objective Optimization for Improving the Aerodynamic Characteristics of High-Speed Train Nose Shape

open access: yesFluids
An optimal high-speed train nose design was formulated to reduce aerodynamic drag, mitigate tunnel micro-pressure waves, and improve crosswind safety. Using the vehicle modeling function, the EMU-320 nose shape was derived and applied as the base model ...
Suhwan Yun   +4 more
doaj   +1 more source

A study on aerodynamic characteristics and visualization of flow field of lift-drag combined starter

open access: yesAdvances in Mechanical Engineering, 2019
This study refers to the modification of the aerodynamic characteristics of the starter for the lift-type vertical axis wind turbine, the structure of the traditional drag starter was improved, and the lift-drag combined starter model was proposed. Based
Fang Feng   +4 more
doaj   +1 more source

THE KEY ROLE OF MODERN AERODYNAMIC TRENDS IN INCREASING THE ENERGY EFFICIENCY OF HIGH-SPEED VEHICLES [PDF]

open access: yesTransport Problems
Based on the analysis of typical operating modes of modern high-speed trains and transport aircraft, the influence of various schemes of surface relief modification and blowing through it on aerodynamic drag has been thoroughly investigated.
Yevhenii SHKVAR   +2 more
doaj   +1 more source

Investigation on Aerodynamics of Super–Effective Car for Drag Reduction. [PDF]

open access: yes, 2016
This paper focuses on shape optimization of a car body to be used in Shell Eco Marathon race. The work consists of the review of aerodynamic performance for currently used shapes, definition of the design constraints for the vehicle and recommendations ...
Cieśliński, Artur   +3 more
core  

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