Results 81 to 90 of about 151,810 (262)

Numerical Study on Interactional Aerodynamics of a Quadcopter in Hover with Overset Mesh in OpenFOAM [PDF]

open access: yesarXiv, 2023
Interactional aerodynamics of a quadcopter in hover is numerically investigated in this study. The main objective is to understand major flow structures associated with unsteady airloads on multirotor aircraft. The overset mesh approach is used to resolve flow structures in unsteady simulation using the flow solver OpenFOAM.
arxiv  

Modern problems of aircraft aerodynamics

open access: yesAdvances in Aerodynamics, 2019
The article represents the discussion of several separate directions of investigations, which are performed by TsAGI flight vehicles aerodynamics specialists at the time.
S. Chernyshev, S. V. Lyapunov, A. Wolkov
semanticscholar   +1 more source

A Simple Mono-Dimensional Approach for Lap Time Optimisation [PDF]

open access: yes, 2020
Lap time minimisation methods have great relevance in the analysis of race tracks, and in the design and optimisation of race vehicles. Several lap time minimisation approaches have been proposed in the literature, which are computationally demanding ...
Lenzo, Basilio, Rossi, Valerio
core   +1 more source

Inter-plume aerodynamics for gasoline spray collapse

open access: yes, 2018
The collapse or merging of individual plumes of direct-injection gasoline injectors is of fundamental importance to engine performance because of its impact on fuel–air mixing.
Panos Sphicas   +3 more
semanticscholar   +1 more source

Influence of Double-Ducted Serpentine Nozzle Configurations on the Interaction Characteristics between the External and Nozzle Flow of Aircraft

open access: yesAerospace
To clarify the influence of the serpentine nozzle configurations on the flow characteristics and aerodynamic performance of aircraft, the flow features and aerodynamic performances of the double-ducted serpentine nozzles with different aspect ratios (AR),
Jilong Zhu   +6 more
doaj   +1 more source

The space shuttle launch vehicle aerodynamic verification challenges [PDF]

open access: yes
The Space Shuttle aerodynamics and performance communities were challenged to verify the Space Shuttle vehicle (SSV) aerodynamics and system performance by flight measurements.
Austin, L. D.   +5 more
core   +1 more source

Summary of longitudinal stability and control parameters as determined from space shuttle Columbia flight test data [PDF]

open access: yes
Extensive wind tunnel tests were conducted to establish the preflight aerodynamics of the Shuttle vehicle. This paper presents the longitudinal, short-period aerodynamics of the space shuttle Columbia as determined from flight test data.
Suit, W. T.
core   +1 more source

Aerodynamical Effects in Snow Crystal Growth [PDF]

open access: yesarXiv, 2009
We review several aspects of aerodynamics that affect the growth, morphology, and symmetry of snow crystals. We derive quantitative estimates for aerodynamical forces that orient falling snow crystals, estimate how air flow around snow crystals affects their growth rates (the ventilation effect), and examine how the combination of orientation and ...
arxiv  

An experimental investigation of the aerodynamics and cooling of a horizontally-opposed air-cooled aircraft engine installation [PDF]

open access: yes
A flight-test based research program was performed to investigate the aerodynamics and cooling of a horizontally-opposed engine installation. Specific areas investigated were the internal aerodynamics and cooling mechanics of the installation, inlet ...
Cross, E. J., Jr.   +3 more
core   +1 more source

Fiber optic sensing technologies potentially applicable for hypersonic wind tunnel harsh environments

open access: yesAdvances in Aerodynamics, 2020
Advanced sensing techniques are in big demand for applications in hypersonic wind tunnel harsh environments, such as aero(thermo)dynamics measurements, thermal protection of aircraft structures, air-breathing propulsion, light-weighted and high-strength ...
Huacheng Qiu, Fu Min, Yanguang Yang
doaj   +1 more source

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