Innovative Blade Trailing Edge Flap Design Concept using Flexible Torsion Bar and Worm Drive

Ha, Kwangtae

doi:10.28991/hij-2020-01-03-01

Cited by 19 publications

(14 citation statements)

References 8 publications

(9 reference statements)

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“…The experimental research constitutes an important source of information about the performance of the test subject under various working conditions. The theoretical analysis of the issue allows defining the number of knowledge gaps in the existing research methods and indicating new areas to be examined [30,31]. It is important to properly plan the research and its implementation according to a specific pattern [32].…”

Section: Experimental Researchmentioning

confidence: 99%

Experimental Research Concerning Hydrodynamic Clutches Controlled by Increasing Distance Between Rotors

Iwanicki¹,

Musiałek²,

Osowski³

et al. 2021

Adv. Sci. Technol. Res. J.

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The article describes the results of experimental research concerning a prototypical hydrodynamic clutch controlled via changes in flow rates of the working fluid. The aim of the research was to collect experimental data to confirm the practical possibility of using such a control method of the hydrodynamic clutch and to compare this with other currently used methods. A change in flow rate of the working fluid was obtained by increasing the distance between rotors. The experimental research was conducted on a test rig built specifically for this purpose. On the basis of the research, the influence of the clutch filling level, the direction of rotation and the temperature of the working fluid on the clutch torque were determined. The experimental research shows that the transferred torque is significantly influenced by the width of the gap between rotors, the rotational speed of the input shaft, the clutch filling degree and the temperature of the working fluid. Thus, these values may be used to control the torque transferred by the hydrodynamic clutch. The temperature of the working fluid is not recommended as a control value due to the fact that it is dependent on the working conditions of the hydrodynamic clutch. On the basis of the test results, it was proven that hydrodynamic clutches controlled by increasing the distance between rotors can be successfully used, for example, in drive systems of wind farms.

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Section: Experimental Researchmentioning

confidence: 99%

Experimental Research Concerning Hydrodynamic Clutches Controlled by Increasing Distance Between Rotors

Iwanicki¹,

Musiałek²,

Osowski³

et al. 2021

Adv. Sci. Technol. Res. J.

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“…Further studies on the shockwaves flow in an aeration chute spillway have shown that the deployment of the aeration intensifies the shockwaves. e waves become larger with the increase of the Froude number [27,28]. Wu et al [29] conducted experiments to study shockwaves characteristics.…”

Section: Introductionmentioning

confidence: 99%

Performance Assessment of Shockwaves of Chute Spillways in Large Dams

Mousavimehr

Yamini

Kavianpour

2021

Shock and Vibration

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Spillways are the most important structures of large dams that are responsible for releasing the excessive flood discharge from the reservoir. Although many studies have been performed to determine the flow characteristics over these structures, however, the available information on the shockwaves’ characteristics for spillways’ design is limited. The supercritical flow below the chute piers generates an aerated flow known as shockwaves. Due to the flow interaction with the chute piers, three kinds of standing waves just downstream of the pier, in the middle of the chute, and on the sidewalls are generated. This phenomenon affects the flow domain and its hydraulic characteristics along the chute spillway. The height of the waves increases downstream, where they hit the chute walls and reflect again into the flow to interact together again. The process repeated and intensified downstream in a lozenge shape. The height of these waves can be more than twice the depth flow and thus run over the sidewalls. This is important for the design of chute walls in chute spillways with control gates. In this study, the experimental formation of the shockwaves and their behavior along the chute and their reduction measures are presented. Experiments were conducted on a scaled physical model (1/50) of Kheirabad Dam, Water Research Institute, Iran. It was realized that apart from the geometry of piers and chute spillway, Froude number of flow and gate opening are the main effective parameters on the hydraulic performance of shockwaves’ formation and their development on gated spillways.

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“…They observe significant improvement in resistive capacity and ductility for non reinforce beams over reinforced beams. Also, the change in design like blade edge and adding edged on the torsional bar helps improve mechanical properties of components used in various engineering applications [20].…”

Section: Introductionmentioning

confidence: 99%

Study of the Fracture Behavior under the Effect of Cross-ply and Angle-ply Arrangement of FRP Composite Laminate Subjected to Central Circular Cut-out with Mechanical and Thermal Loading Conditions

Madhav

Gupta

2021

IJE

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In advance composite material the propagation of crack is a regular failure problem in various engineering applications especially in aircrafts body. The aircraft body components are subjected to various thermal and mechanical loading conditions. It is very difficult, time-consuming and costly process of testing the aircrafts components failure due to various thermal and mechanical conditions. Strain energy release rate (SERR) is the significant parameter for the composite materials and quality of composite materials depends on SERR values.The present investigation is based on ANSYS analysis for finding the strain energy release rate (SERR) value using Virtual Crack Closure Technique (VCCT) to understand the fracture behavior of the composite lamina. The circular crack present in the middle of the composite plate and subjected to pressure and temperature loading for different angle (cross-ply and angle-ply) composite structure laminas. The angle-ply shows less SERR in mode I & II while cross-ply shows less SERR in mode III under the constant pressure loading conditions. Mode II shows the maximum SERR in cross-ply compared to mode I and III for temperatures 30ºC, , 130 ºC and 180ºC. SERR for mixed-mode was found by considering the total mode of fracture and validation based on published literature for SERR due to the thermal load of mode I (GI) for different fiber layup configurations of the circular cut-out.

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Innovative Blade Trailing Edge Flap Design Concept using Flexible Torsion Bar and Worm Drive

Cited by 19 publications

References 8 publications

Experimental Research Concerning Hydrodynamic Clutches Controlled by Increasing Distance Between Rotors

Experimental Research Concerning Hydrodynamic Clutches Controlled by Increasing Distance Between Rotors

Performance Assessment of Shockwaves of Chute Spillways in Large Dams

Study of the Fracture Behavior under the Effect of Cross-ply and Angle-ply Arrangement of FRP Composite Laminate Subjected to Central Circular Cut-out with Mechanical and Thermal Loading Conditions

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