Evaluation of Rapid Prototyping Technologies for Use in Wind Tunnel Model Fabrication

Tyler, Charles; Braisted, William R.; Higgins, James

doi:10.2514/6.2005-1301

Cited by 24 publications

(20 citation statements)

References 9 publications

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“…18,19 Other interesting characteristics for experimental aerodynamic tests are time-saving and accuracy for preliminary aerodynamic investigation. 23,24 A Zortrax M200 machine with black tinted high impact polystyrene (HIPS) was used as injection material. In addition, a polishing treatment with acetone was applied in order to obtain acceptable surface roughness as necessary for typical wind tunnel models.…”

Section: Methodsmentioning

confidence: 99%

Optimization of a columnar vortex generator installed over an aircraft carrier ski-jump ramp

Bardera

2019

Proceedings of the Institution of Mechanical Engineers, Part M:

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Aircraft performances over aircraft carriers are essential in modern navies. Take-off operation is critical due to the short runway available. The ski-jump ramp is a useful system that allows to operate under safe conditions. However, the sharp edge at the end of the runway provokes a region with recirculation bubble and low velocity producing strong flow disturbances. Hence, the aircraft performances are affected and the pilot’s workload is augmented. Previous researches showed that columnar vortex generator reduces the recirculation bubble generated over the end of flight deck. This article presents an in-depth experimental study performed by wind tunnel testing in order to determine the relation between the columnar vortex generator size and the recirculation bubble reduction. Particle image velocimetry is used to investigate the flow field velocity and flow structure around the ski-jump ramp as a non-intrusive experimental technique. Encouraging results were found for the biggest columnar vortex generator studied.

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Section: Methodsmentioning

confidence: 99%

Optimization of a columnar vortex generator installed over an aircraft carrier ski-jump ramp

Bardera

2019

Proceedings of the Institution of Mechanical Engineers, Part M:

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“…A polishing treatment with acetone was applied to obtain non-reflective surfaces with smooth surface. 15 A parametric analysis was developed to analyze the flow behavior and find the optimum geometry for each case. The parameters modified were flat plate incidence angle (a), radius (R) of the cylindrical device, and spiral parameter (p) of the CVG.…”

Section: Passive Flow Control Devicesmentioning

confidence: 99%

Three-dimensional characterization of passive flow control devices over an aircraft carrier ski-jump ramp

Bardera

Rodríguez-Sevillano

León-Calero

et al. 2017

Proceedings of the Institution of Mechanical Engineers, Part G:

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The aircraft carrier is a key element in modern navies. On-board operations at sea take place under very severe conditions, which affect the aerodynamic flow on the flight deck. The ski-jump ramp is a curved runway that enables the aircraft to takeoff using shorter runway distance. However, this geometry generates strong flow disturbances, mainly characterized by a recirculation bubble at the forward end of the ramp. This phenomenon reduces the aircraft performances and increases the pilot's workload due to the unsteady forces which appear on the control surfaces. Passive flow control appears as a solution to this problem. Wind tunnel experimental research was developed in this study to mitigate the adverse aerodynamic effects of the ski-jump ramp presence. Different devices were tested using particle image velocimetry. Geometrical parameters of the devices were varied to study the effectiveness and select the best solution. Interesting results were found for the columnar vortex generator configurations. The optimum configuration could be applied shortly to the full-scale problem to reduce the adverse aerodynamic effects during takeoff maneuvers.

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“…The model development for the test should be high accuracy, low cost and less time of model production [1]. 3D printing technology could also serve as the link between Computational Fluid Dynamic (CFD) simulations and experimental test, due to its high accuracy [2].…”

Section: Introductionmentioning

confidence: 99%

Materials Forming of Dolphin Model for Hydrodynamic Research Based on the 3D Printing Technology

Zhang¹,

Chen²,

Wu³

et al. 2016

Proceedings of the International Symposium on Mechanical Engineering and Material Science

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Traditional manufacturing techniques used for developing the models for hydrodynamic research are slow and costly. Based on the development of current technology, 3D printing technology could be the fastest way to generate the model for with high accuracy for experimental test. With the help of 3D printing technology, it would only take days or hours to generate the 3D model with complicated geometry. This paper presents the application of 3D printing method for dolphin model generation. Rigid and flexible dolphin 3D models are made with non-metallic. 3D printing parts include the outer mold and added stiffness to the model. The dolphin model is 1 m long, and does not have pectoral fin. The dolphin hydrodynamic model developed using 3D printing technology show promise in model development for future hydrodynamic model studies. A rigid model and two flexible models with different material have been built by 3D printing. The appropriate materials were chosen for flexible dolphin model, which have the similar properties with dolphin skin.

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Evaluation of Rapid Prototyping Technologies for Use in Wind Tunnel Model Fabrication

Cited by 24 publications

References 9 publications

Optimization of a columnar vortex generator installed over an aircraft carrier ski-jump ramp

Optimization of a columnar vortex generator installed over an aircraft carrier ski-jump ramp

Three-dimensional characterization of passive flow control devices over an aircraft carrier ski-jump ramp

Materials Forming of Dolphin Model for Hydrodynamic Research Based on the 3D Printing Technology

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