Maturation of Direct Contactless Microfabrication for Application of Drag Reducing Riblets

Bilinsky, Henry C.; Wilson, Ralf N.

doi:10.2514/6.2018-0321

Cited by 7 publications

(9 citation statements)

References 5 publications

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“…Creativity and innovation are considered essential core competencies in teams and companies [23][24][25] ; however, possible applications of recent findings in cognitive neuroscience to improve creativity in teams remain elusive. Genius inventions, e.g., the combination of shark skin properties with the surface of aircrafts to minimize the friction of the airstream, have led to impressive fuel savings of billions of dollars in commercial aviation 18,19 . Such creative inventions require specific connections of neural networks representing knowledge of different disciplines such as biology, physics, and aerodynamics.…”

Section: Discussionmentioning

confidence: 99%

“…The underlying main idea is to systematically investigate possible combinations of cognitive concepts (and their underlying neural networks) that have not been connected beforehand within a person, which can be facilitated by a systematic intra-interindividual connectivity analysis or between different persons, which can be facilitated by systematic interinterindividual connectivity analysis. The genius idea, e.g., to combine shark skin properties with the surface of aircrafts to minimize the friction of the airstream, has led to a net fuel saving of 2% or greater, representing a potential $5.5 billion in fuel savings across commercial aviation 18,19 . Such creative inventions require specific connections of neural networks representing knowledge of different disciplines such as biology, physics, and aerodynamics.…”

Section: Introductionmentioning

confidence: 99%

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Intra and interindividual Connectivity Analyses (IICA) A neuropsychological method to improve creativity in teams

Karim,

Cataltepe,

Usman

et al. 2024

Preprint

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Creativity is usually conceived as generating ideas or problem solutions that are both novel and potentially useful. In particular, if new teams are formed, e.g., in a company, they would benefit if (a) each team member can apply as many of his/her strengths as possible in the company and (b) the team members can cooperate and combine as many of their strengths as possible. Discovering such human resource potential in a company is a crucial creative task. Several neuroimaging studies have demonstrated that divergent thinking is associated with higher functional connectivity between different brain regions. However, psychological methods to improve awareness and regulation of neurocognitive processes involved in creativity (i.e., metacognition of creativity) and thereby boost such functional connections remain elusive.Based on neuropsychological findings from creativity research, we propose a metacognitive training for promoting creativity called intra- and interindividual connectivity analysis (IICA).In a role-play, participants were divided into two groups. Each group was tasked with finding out how to apply their strengths beneficially in a company (for example, a psychiatric clinic). The fluency and originality of their ideas were measured as dependent variables of creativity. In the experimental group, the proposed intra- and interindividual connectivity analysis (IICA) method was carried out, while the control group was supposed to solve the task using the common brainstorming method. The results show that IICA led to significantly higher fluency and originality rates than the control group. These data suggest that IICA can be a promising metacognitive method to promote team creativity and cooperation potential. Future studies should validate the effect of this method in further companies and investigate the neurobiological foundations of our approach using neurophysiological methods and computational modeling.

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Intra and interindividual Connectivity Analyses (IICA) A neuropsychological method to improve creativity in teams

Karim,

Cataltepe,

Usman

et al. 2024

Preprint

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“…This section explores the experimental aspects of characterizing the aerodynamic and aeroacoustic properties of riblet surfaces. It provides a review of experimental tests conducted using various instrumentation technologies, fabrication methods, and testing strategies [25,45,56,66,80,[82][83][84]. Over the past decades, researchers have introduced innovative techniques, resulting in new insights into the applicability of riblets in industrial settings [84][85][86].…”

Section: Experimental Investigation Of Riblets Performancementioning

confidence: 99%

“…In 2010, the BMW Oracle team won the 33rd America's Cup with their racing yacht covered with riblets [42], In 2012, riblets found their applications on wind turbine blades [31] and a Formula 1 car by Bionic Surface technology [43]. Moreover, riblets' antifouling properties have been studied for potential applications on marine ships, medical implants, water treatment systems, and food and beverage industries [44][45][46].…”

Section: Introductionmentioning

confidence: 99%

Advances in Riblets Design

Pakatchian,

Rocha,

2023

Applied Sciences

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Continuous evolution in nature has created optimum solutions for creature survival that have inspired many innovative engineering designs. Riblet geometries, passive flow control devices, have been studied, which were inspired by the skin of fast-swimming sharks. Turbulent boundary layer research reveals the positive effect of riblets in reducing drag by manipulating turbulent structures. Reducing drag is an important topic for the aviation industry, as it directly relates to fuel savings and reductions in carbon footprints. Aircraft noise represents another significant area of concern. When riblet designs modify turbulent structures, they can also impact pressure sources within the boundary layer, consequently influencing the generation of self-noise. Earlier research studies have demonstrated the favorable outcomes of riblet configurations on the variations in wall pressure, resulting in reduced levels of noise propagation. The current review paper is mainly devoted to the application of riblets in the aviation industry, focusing on studies that are performed in wind tunnels, flight tests, and using numerical techniques. Proving the desired performance of micro-grooves, their method of fabrication and implementation on aircraft surfaces are important topics that are also discussed. In addition, the effect of durability on the performance and required maintenance intervals was previously investigated and is also presented. Finally, recommendations for future activities in the relevant fields of study are provided.

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“…In the actual flight of the transport, the take-off and climb stege focuses on lift augmentation, while the cruise phase concentrates on the drag-reducing effect. In recent years, the control of lift augmentation and drag reduction of riblet structure are also the research hotspots [12][13][14]. To quickly and effectively verify the lift augmentation and drag reduction effect of V-shaped flow riblet surface, the project team processed two 1:40 models in the systematic research on the aerodynamic characteristics of the conveyor model.…”

Section: Introductionmentioning

confidence: 99%

On Aircraft Lift and Drag Reduction Using V Shaped Riblets

Geng¹,

Cai²,

Jiang³

et al. 2021

Fluid Dynamics &Amp; Materials Processing

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Reducing drag during take-off and nominal (cruise) conditions is a problem of fundamental importance in aeronautical engineering. Existing studies have demonstrated that v-shaped symmetrical riblets can effectively be used for turbulence control, with those with dimensionless depth h + = 15 and dimensionless width s + = 15 having the best drag reduction effect. In the present study, experimental tests have been conducted considering two models of the same size, one with smooth surface, the other with v-shaped riblets of the h + = 15 and s + = 15 type. The results show that for an angle of attack in the 8°~20°range (take-off stage), the maximum lift coefficient can be increased by 22%. For angle of attack between 8°and 14°, a drag reduction effect can be produced using riblets, which increases with the Reynolds number, leading to a decrease in the drag coefficient maximum of 36%. Flow visualization experiments have been carried out by means of Laser Induced fluorescence.

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Maturation of Direct Contactless Microfabrication for Application of Drag Reducing Riblets

Cited by 7 publications

References 5 publications

Intra and interindividual Connectivity Analyses (IICA) A neuropsychological method to improve creativity in teams

Intra and interindividual Connectivity Analyses (IICA) A neuropsychological method to improve creativity in teams

Advances in Riblets Design

On Aircraft Lift and Drag Reduction Using V Shaped Riblets

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