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Journal articles on the topic 'Hollow fan blade'

Author: Grafiati

Published: 30 May 2022

Last updated: 31 May 2022

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1

Guo, Xiao, Qing Zhen Yang, and Yong Qiang Shi. "Vibration Characteristics Analysis of Wide-Chord Hollow Fan Blade." Applied Mechanics and Materials 482 (December 2013): 174–78. http://dx.doi.org/10.4028/www.scientific.net/amm.482.174.

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Wide-Chord Hollow Fan Blade is One of the New Technologies Used in Aircraft Engines. in this Paper, the Modal Analysis Method is Used to Analyze the Influence of the Rib Number and the Rib Thickness to Wide-Chord Hollow Fan Blade Vibration Characteristics. the Result Shows that the Wide-Chord Hollow Fan Blades Greatly Improves the First-Order Vibration Frequency Compared with the Solid Blades, and the First-Order Vibration Frequency of the Wide-Chord Hollow Fan Blades is Reduced with the Increasing Rib Number which is Not Good for Vibration Elimination. the Wide-Chord Hollow Fan Blades’ Vibrat

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2

Nikhamkin, M., and B. Bolotov. "Experimental and Finite Element Analysis of Natural Modes and Frequencies of Hollow Fan Blades." Applied Mechanics and Materials 467 (December 2013): 306–11. http://dx.doi.org/10.4028/www.scientific.net/amm.467.306.

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Natural modes and frequencies of gas turbine engine hollow fan blades were experimentally investigated. The blades were produced with the method of super-plastic molding and pressure welding combination. Two independent experimental methods were used: three-component scanning laser vibrometry and impact modal analysis. Natural frequencies and vibration modes of a hollow fan blade and stress fields corresponding to the natural modes were got. The finite element modal analysis was carried out. The hollow fan blade was stated to have particular natural vibration modes. The investigation results c

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3

Kielb, R. E. "Mass Balancing of Hollow Fan Blades." Journal of Engineering for Gas Turbines and Power 108, no. 4 (1986): 577–82. http://dx.doi.org/10.1115/1.3239950.

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This paper uses a typical section model to investigate analytically the effect of mass balancing as applied to hollow, supersonic fan blades. A procedure to determine the best configuration of an internal balancing mass to provide flutter alleviation is developed. This procedure is applied to a typical supersonic shroudless fan blade which is unstable both in the solid configuration and when it is hollow with no balancing mass. The addition of an optimized balancing mass is shown to stabilize the blade at the design condition.

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4

Sutliff, D. L., D. L. Tweedt, E. B. Fite, and E. Envia. "Low-Speed Fan Noise Reduction with Trailing EDGE Blowing." International Journal of Aeroacoustics 1, no. 3 (2002): 275–305. http://dx.doi.org/10.1260/147547202320962592.

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An experimental proof-of-concept test was conducted to demonstrate rotor-stator interaction tone noise reduction through rotor trailing edge blowing. The velocity deficit from the viscous wake of the rotor blades was reduced by injecting air into the wake from a trailing edge slot. Composite hollow rotor blades with internal flow passages were designed based on Computational Fluid Dynamics codes modeling the internal flow. The hollow blade with interior guide vanes creates flow channels through which externally supplied air flows from the root of the blade to the trailing edge. The impact of t

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5

Salnikov, Anton. "3D optimization of the hollow fan blade internal structure." Journal of Physics: Conference Series 1891, no. 1 (2021): 012015. http://dx.doi.org/10.1088/1742-6596/1891/1/012015.

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6

Chuan, Zeng, Jiang Xiang-hua, Chai Xiang-hai, and Shi Tong-cheng. "TC4 Hollow Fan Blade Structural Optimization Based on Bird-strike Analysis." Procedia Engineering 99 (2015): 1385–94. http://dx.doi.org/10.1016/j.proeng.2014.12.674.

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7

Kruglov, Alexey, Ramil Lutfullin, Radik Mulyukov, Minnaul Mukhametrakhimov, Oleg Rudenko, and Rinat Safiullin. "Promises of Low-Temperature Superplasticity for the Enhanced Production of Hollow Titanium Components." Materials Science Forum 838-839 (January 2016): 610–14. http://dx.doi.org/10.4028/www.scientific.net/msf.838-839.610.

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Application of the conventional superplasticity (SP) allows producing the unique hollow structures. One remarkable example is the hollow titanium blade of the air engine fan produced by Rolls-Royce. However, high temperature titanium alloys processing (~ 927 °С) limits wide industrial application of the conventional SP. The solution of the mentioned issue can be found through the application of low-temperature SP. Ti-6Al-4V alloy with ultrafine grain structure at the temperature range of 600 800 °С has enough ductility resources for the superplastic forming (SPF) of the parts with the compli

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8

Cosme, Nicolas, David Chevrolet, Jérôme Bonini, Bernard Peseux, and Patrice Cartraud. "Prediction of transient engine loads and damage due to hollow fan blade-off." Revue Européenne des Éléments Finis 11, no. 5 (2002): 651–66. http://dx.doi.org/10.3166/reef.11.651-666.

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9

Chai, Xianghai, Xiaoyun Zhang, Zhiqiang Wang, and Yesheng Liu. "Modeling of the Diffusion Bond for SPF/DB Titanium Hollow Structures." International Journal of Aerospace Engineering 2015 (2015): 1–9. http://dx.doi.org/10.1155/2015/694564.

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Diffusion-bonded titanium hollow warren structures have been successfully applied in aircraft engine components, such as fan blade, and OGV, while the optimal design of the hollow warren structure to improve its impact resistance, especially under bird-strike event, has been a challenge. In this work, a series of impact tests and numerical simulations are carried out to investigate the effect of key geometric features on the overall impact strength of a panel-shaped titanium hollow warren structure. Based on experimental and numerical studies, a quantitative relationship between diffusion bond

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10

Pereira, Michaël, Florent Ravelet, Kamel Azzouz, et al. "Improved Aerodynamics of a Hollow-Blade Axial Flow Fan by Controlling the Leakage Flow Rate by Air Injection at the Rotating Shroud." Entropy 23, no. 7 (2021): 877. http://dx.doi.org/10.3390/e23070877.

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Axial flow fans are used in many fields in order to ensure the mass and heat transfer from air, chiefly in the heating, ventilation and air conditioning industry (HVAC). A more proper understanding of the airflow behavior through the systems is necessary to manage and optimize the fan operation. Computational fluid dynamics (CFD) represents a real tool providing the ability to access flow structures in areas that measuring equipment cannot reach. Reducing the leakage flow rate, inherent in operation, by synthetic-jet techniques improves performance. This paper presents the CFD results performe

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11

Meng, J., L. F. Liao, D. Li, Y. Cao, L. Y. Yang, and Y. Y. Chen. "Topology Optimization Method Research on Hollow Wide-chord Fan Blade of a High-bypass Turbofan Engine." Procedia Engineering 99 (2015): 1228–33. http://dx.doi.org/10.1016/j.proeng.2014.12.652.

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12

Li, Zhang, Yingzi Jin, Dou Huashu, and Jin Yuzhen. "Numerical and experimental investigation on aerodynamic performance of small axial flow fan with hollow blade root." Journal of Thermal Science 22, no. 5 (2013): 424–32. http://dx.doi.org/10.1007/s11630-013-0644-8.

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13

Salie, Faiza, Pasquale Scarpino, Scott Clark, and Klaus Willeke. "Laboratory Evaluation of Airborne Microbial Reduction by an Ultraviolet Light Positioned in a Modified Hollow Ceiling Fan Blade." American Industrial Hygiene Association Journal 56, no. 10 (1995): 987–92. http://dx.doi.org/10.1080/15428119591016412.

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14

Jiang, Bin, Yu Can Fu, Zheng Cai Zhao, Bo Ping, Hai Ning Wang, and Wen Feng Ding. "Experimental Study on Profile Machining of Titanium Alloys with Superabrasive Tools." Advanced Materials Research 1136 (January 2016): 60–65. http://dx.doi.org/10.4028/www.scientific.net/amr.1136.60.

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Electroplated profiled superabrasive grinding wheels which integrate both advantages of grinding and profile milling have been widely used in the machining process the wide chord hollow fan blade rabbets made of Ti-6Al-4V alloy. However, the employment of these tools has been impeded by drastic forces and thermal damage. In order to investigate the variation regularities of grinding forces and temperature with different machining parameters, experiments were carried out with single layer electroplated CBN grinding wheels. Grinding forces and temperature were measured and analyzed. Meanwhile, t

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15

Xiang, Shengchang, Shengmin Hu, Tianlu Sheng, Ruibiao Fu, Xintao Wu та Xudong Zhang. "A Fan-Shaped Polynuclear Gd6Cu12Amino Acid Cluster: A “Hollow” and Ferromagnetic [Gd6(μ3-OH)8] Octahedral Core Encapsulated by Six [Cu2] Glycinato Blade Fragments". Journal of the American Chemical Society 129, № 49 (2007): 15144–46. http://dx.doi.org/10.1021/ja0760832.

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16

Hou, Naidan, Yulong Li, and Jun Liu. "Numerical Simulation of Bird Impact on Hollow Blades of Titanium Fan Assembly." Journal of Aerospace Engineering 32, no. 4 (2019): 04019044. http://dx.doi.org/10.1061/(asce)as.1943-5525.0001024.

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17

Shcherbinin, S. V., R. V. Safiullin, R. R. Mulyukov, and A. L. Filatov. "Increasing the sensitivity of the X-ray testing of hollow fan blades." Russian Journal of Nondestructive Testing 48, no. 2 (2012): 104–8. http://dx.doi.org/10.1134/s1061830912020088.

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18

Eberlinc, Matjaz, Brane Sirok, and Marko Hocevar. "Patented Hollow Blades of the Axial Fan with Trailing Edge Self-Induced Blowing." Recent Patents on Mechanical Engineering 2, no. 1 (2010): 1–7. http://dx.doi.org/10.2174/1874477x10902010001.

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19

Eberlinc, Matjaz, Brane Sirok, and Marko Hocevar. "Patented Hollow Blades of the Axial Fan with Trailing Edge Self-Induced Blowing." Recent Patents on Mechanical Engineeringe 2, no. 1 (2009): 1–7. http://dx.doi.org/10.2174/2212797610902010001.

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20

Azzam, Tarik, Richard Paridaens, Florent Ravelet, Sofiane Khelladi, Hamid Oualli, and Farid Bakir. "Experimental investigation of an actively controlled automotive cooling fan using steady air injection in the leakage gap." Proceedings of the Institution of Mechanical Engineers, Part A: Journal of Power and Energy 231, no. 1 (2017): 59–67. http://dx.doi.org/10.1177/0957650916688120.

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In an axial fan, a leakage flow driven by a pressure gradient between the pressure side and the suction side occurs in the gap between the shroud and the casing. This leakage flow is in the opposite direction to the main flow and is responsible for significant energy dissipation. Therefore, many authors have worked to understand this phenomenon in order to reduce these inherent energy losses. Up to now, most of the studies reported in the literature have been passive solutions. In this paper, an experimental controlling strategy is suggested to reduce the leakage flow rate. To this end, a fan

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21

Berdin, V. K., A. M. Smyslov, N. V. Berdin, and V. V. Luk’yanov. "Analysis of stress state in a root-airfoil transition zone of hollow wide chord fan blades." Russian Aeronautics (Iz VUZ) 59, no. 1 (2016): 134–37. http://dx.doi.org/10.3103/s1068799816010219.

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22

Zhou, Xu, Dinghua Zhang, Ming Luo, and Baohai Wu. "Toolpath dependent chatter suppression in multi-axis milling of hollow fan blades with ball-end cutter." International Journal of Advanced Manufacturing Technology 72, no. 5-8 (2014): 643–51. http://dx.doi.org/10.1007/s00170-014-5698-6.

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23

Eberlinc, Matjaž, Brane Širok, and Marko Hočevar. "Experimental investigation of the interaction of two flows on the axial fan hollow blades by flow visualization and hot-wire anemometry." Experimental Thermal and Fluid Science 33, no. 5 (2009): 929–37. http://dx.doi.org/10.1016/j.expthermflusci.2009.03.012.

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24

Eberlinc, Matjaž, Brane Širok, Matevž Dular, and Marko Hočevar. "Modification of Axial Fan Flow by Trailing Edge Self-Induced Blowing." Journal of Fluids Engineering 131, no. 11 (2009). http://dx.doi.org/10.1115/1.4000345.

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Axial fans often show adverse flow conditions at the fan hub and at the tip of the blade. The modification of conventional axial fan blade is presented. Hollow blade was manufactured from the hub to the tip. It enables the formation of self-induced internal flow through internal passages. The internal flow enters the passage of the hollow blade through the opening near the fan hub and exits through the trailing edge slots at the tip of the hollow blade. The study of the influence of internal flow on the flow field of axial fan and modifications of axial fan aerodynamic characteristics is prese

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25

Kireitseu, Maksim, G. R. Tomlinson, and R. A. Williams. "Assembly Design Concepts and Methods of Tailoring of CNT Orientation and Dispertion for Damping/Dynamic Properties of Nanoparticle-Reinforced Multifunctional Materials." MRS Proceedings 901 (2005). http://dx.doi.org/10.1557/proc-0901-ra05-01-rb05-01.

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AbstractIn this paper, the concepts of nanotechnology-based fan blade have been introduced and CNT-reinforced hollow micro-balloon-based syntactic foams/composites and damping coatings have been applied so as to develop the next generation aerospace components. The focus in this paper is directed toward the development of the next generation of vibration damping systems, providing a road map to manufacturing technology and design solutions.

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26

ZHANG, Xiaojie, Yanrong WANG, Weiyu CHEN, and Xianghua JIANG. "Parametric study on the flutter sensitivity of a wide-chord hollow fan blade." Chinese Journal of Aeronautics, January 2022. http://dx.doi.org/10.1016/j.cja.2022.01.014.

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27

Brien, Donna Lee, Leonie Rutherford, and Rosemary Williamson. "Hearth and Hotmail." M/C Journal 10, no. 4 (2007). http://dx.doi.org/10.5204/mcj.2696.

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   Introduction It has frequently been noted that ICTs and social networking applications have blurred the once-clear boundary between work, leisure and entertainment, just as they have collapsed the distinction between public and private space. While each individual has a sense of what “home” means, both in terms of personal experience and more conceptually, the following three examples of online interaction (based on participants’ interest, or involvement, in activities traditionally associated with the home: pet care, craft and cooking) suggest that the utilisation of onli

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