Relevant bibliographies by topics / Blade demonstrator

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  1. Journal articles
  2. Dissertations / Theses
  3. Books
  4. Book chapters
  5. Conference papers
  6. Reports

Academic literature on the topic 'Blade demonstrator'

Author: Grafiati
Published: 4 June 2021
Last updated: 8 February 2022

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Journal articles on the topic "Blade demonstrator"

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Falasco, Thomas, Edward Zachar, and Art Lallo. "H‐76B Fantail™ Demonstrator Composite Fan Blade Fabrication." Journal of the American Helicopter Society 39, no. 3 (1994): 53–57. http://dx.doi.org/10.4050/jahs.39.53.

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Sheard, A. G. "Blade by Blade Tip Clearance Measurement." International Journal of Rotating Machinery 2011 (2011): 1–13. http://dx.doi.org/10.1155/2011/516128.

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This paper describes a capacitance-based tip clearance measurement system which engineers have used in the most demanding turbine test applications. The capacitance probe has survived extended use in a major European gas turbine manufacturer's high-temperature demonstrator unit, where it functioned reliably at a turbine entry temperature in excess of 1800 degrees Kelvin. This paper explores blade by blade tip clearance measurement techniques and examines probe performance under laboratory conditions in support of high-temperature installations. The paper outlines the blade by blade tip clearan
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Wood, Paul, Muhammad Jawad Qarni, Paul L. Blackwell, et al. "Modeling the Super Plastic Forming of a Multi-Sheet Diffusion Bonded Titanium Alloy Demonstrator Fan Blade." Materials Science Forum 735 (December 2012): 215–23. http://dx.doi.org/10.4028/www.scientific.net/msf.735.215.

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The paper describes a finite element method in 2D and 3D to simulate the super plastic forming of a demonstrator jet engine fan blade made from Titanium alloy sheet. The fan blade is an assembly of three sheets in which a single inner (core) sheet is diffusion bonded to the two outer (skin) sheets at prescribed zones, which is then super-plastically formed to a desired fan profile. In the model, the diffusion bonded zones between the core and skin sheets are simulated using tied interfaces. The thickness of each skin sheet is not uniform and significant change in thickness can occur over a sho
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Finnegan, William, Priya Dasan Keeryadath, Rónán Ó Coistealbha, Tomas Flanagan, Michael Flanagan, and Jamie Goggins. "Development of a numerical model of a novel leading edge protection component for wind turbine blades." Wind Energy Science 5, no. 4 (2020): 1567–77. http://dx.doi.org/10.5194/wes-5-1567-2020.

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Abstract. As the world shifts to using renewable sources of energy, wind energy has been established as one of the leading forms of renewable energy. However, as wind turbines get increasingly larger, new challenges within the design, manufacture and operation of the turbine are presented. One such challenge is leading edge erosion on wind turbine blades. With larger wind turbine blades, tip speeds begin to reach over 300 km h−1. As water droplets impact along the leading edge of the blade, rain erosion begins to occur, increasing maintenance costs and reducing the design life of the blade. In
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Marques, Pascual, Angelo Maligno, Sönke Dierks, Valentin Penev, and Azouz Bachouche. "The Jinn Military Unmanned Helicopter Program: Rotor Blade Tip Aerodynamics of the Advanced Technology Demonstrator." International Journal of Unmanned Systems Engineering 1, no. 3 (2013): 6–15. http://dx.doi.org/10.14323/ijuseng.2013.10.

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Rivas-Guerra, A. J., and M. P. Mignolet. "Local/Global Effects of Mistuning on the Forced Response of Bladed Disks." Journal of Engineering for Gas Turbines and Power 126, no. 1 (2004): 131–41. http://dx.doi.org/10.1115/1.1581898.

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The focus of the present investigation is on the assessment and modeling of the local (spanning only a few blades) and global (encompassing the entire disk) effects of mistuning on the forced response of bladed disks. To this end, the concept of localization is first revisited and a new measure of this effect is introduced in terms of the number of blades the mistuning of which actually affects the forced response of a central blade. Using this new metric, it is demonstrated that high responding blades typically exhibit a high level of localization and that the reverse is not necessarily true.
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Howell, R. J., H. P. Hodson, V. Schulte, et al. "Boundary Layer Development in the BR710 and BR715 LP Turbines—The Implementation of High-Lift and Ultra-High-Lift Concepts." Journal of Turbomachinery 124, no. 3 (2002): 385–92. http://dx.doi.org/10.1115/1.1457455.

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This paper describes a detailed study into the unsteady boundary layer behavior in two high-lift and one ultra-high-lift Rolls-Royce Deutschland LP turbines. The objectives of the paper are to show that high-lift and ultra-high-lift concepts have been successfully incorporated into the design of these new LP turbine profiles. Measurements from surface mounted hot film sensors were made in full size, cold flow test rigs at the altitude test facility at Stuttgart University. The LP turbine blade profiles are thought to be state of the art in terms of their lift and design philosophy. The two hig
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Pérez Arroyo, Carlos, Jérôme Dombard, Florent Duchaine, et al. "Towards the Large-Eddy Simulation of a full engine: Integration of a 360 azimuthal degrees fan, compressor and combustion chamber. Part II: Comparison against stand-alone simulations." Journal of the Global Power and Propulsion Society, May (May 25, 2021): 1–16. http://dx.doi.org/10.33737/jgpps/133116.

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Unsteady simulations of various components of a gas-turbine engine are often carried out independently and only share averaged quantities at the component interfaces. In order to study the impact and interactions between components, this work compares results from sectoral stand-alone simulations of a fan, compressor and annular combustion chamber of the DGEN-380 demonstrator engine at take-off conditions against an integrated 360 azimuthal degrees large-eddy simulation with over 2.1 billion cells of all previously listed components. Note that, at take-off conditions the compressor works at tr
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Rauch, Matthieu, Gatien Pechet, Jean Yves Hascoet, and Guillaume Ruckert. "Extending High Value Components Performances with Additive Manufacturing: Application to Naval Applications." Solid State Phenomena 319 (June 14, 2021): 58–62. http://dx.doi.org/10.4028/www.scientific.net/ssp.319.58.

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Additive Manufacturing (AM), consists of depositing material in successive layers to obtain the desired part. The parts produced by AM can thus adopt geometries inaccessible by conventional manufacturing means, for example hollow or lattice structures which considerably reduce their weight while keeping or even improving their mechanical properties. Among the many existing processes, Wire Arc Additive Manufacturing (WAAM) is particularly well suited to the manufacture of large metallic parts. It is characterized by a supply of heat in the form of an electric arc (produced by a welding generato
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Duquette, Matthew M., Jessica Swanson, and Kenneth D. Visser. "Solidity and Blade Number Effects on a Fixed Pitch, 50 W Horizontal Axis Wind Turbine." Wind Engineering 27, no. 4 (2003): 299–316. http://dx.doi.org/10.1260/030952403322665271.

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Experimental studies were conducted on a modified Rutland 500 horizontal axis wind turbine to evaluate numerical implications of solidity and blade number on the aerodynamic performance. Wind tunnel data were acquired on the turbine with flat-plate, constant-chord blade sets and optimum-designed blade sets to compare with theoretical trends, which had indicated that increased solidity and blade number more than conventional 3-bladed designs, would yield larger power coefficients, CP. The data for the flat plate blades demonstrated power coefficient improvements as the range of solidities was i
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Dissertations / Theses on the topic "Blade demonstrator"

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Reveillon, Damien. "Optimisation et caractérisation du couplage traction / torsion d'un stratifié pour le vrillage passif d'une pale." Thesis, Besançon, 2013. http://www.theses.fr/2013BESA2050.

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L'optimisation de la forme des pales en fonction des phases de vol constitue un levier puissant dans ladémarche d'amélioration des performances des hélicoptères et de minimisation de leurs impactsenvironnementaux. Cette thèse propose l'étude et la caractérisation d'un concept permettant, grâce àl'utilisation d'un actionneur passif, de contrôler le vrillage d'une pale d'hélicoptère, en vol, en fonctionde la vitesse de rotation. L'actionneur retenu pour tordre une pale rigide est une plaque compositestratifiée munie d'un couplage traction/torsion et intégrée au sein de la pale. Les travaux dével
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Books on the topic "Blade demonstrator"

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Shea, Daniel. Ceramic barrier turbine blade demonstration. U.S.Army Materials Technology Laboratory, 1986.

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United States. National Aeronautics and Space Administration., ed. Composite blade structural analyzer (COBSTRAND) demonstration manual. National Aeronautics and Space Administration, 1989.

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C, Lake Renee, Langley Research Center, and United States. Army Aviation Research and Technology Activity., eds. A Demonstration of passive blade twist control using extension-twist coupling. National Aeronautics and Space Administration, Langley Research Center, 1992.

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Baylouny, Anne Marie. When Blame Backfires. Cornell University Press, 2020. http://dx.doi.org/10.7591/cornell/9781501751516.001.0001.

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The recent influx of Syrian refugees into Jordan and Lebanon has stimulated domestic political action against these countries' governments. This is the dramatic argument at the heart of this book. The book examines the effects on Jordan and Lebanon of hosting huge numbers of Syrian refugees. How has the populace reacted to the real and perceived negative effects of the refugees? The book shows how the demographic changes that result from mass immigration put stress on existing problems in these two countries, worsening them to the point of affecting daily lives. One might expect that, as a res
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The Blake demonstration at the pavilion, horticultural gardens, Monday evening, September 19th, 1892: Full report of the proceedings. s.n., 1986.

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Jumet, Kira D. Grievances against the Mubarak Regime. Oxford University Press, 2017. http://dx.doi.org/10.1093/oso/9780190688455.003.0002.

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This chapter provides background for the 2011 Egyptian Revolution by highlighting the grievances of the upper and lower classes regarding economic factors, police brutality, and corruption. The purpose of the chapter is to explain why a large portion of the Egyptian population was unhappy with the Mubarak regime in the years leading up to the Revolution and where they attributed the blame for their plight. The chapter also demonstrates how social movement organizers frame grievances in a manner that leads to successful protest mobilization. Throughout the chapter, rich description and examples
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Cloud, Dana L. Carrying the Memory of Agitation. University of Illinois Press, 2017. http://dx.doi.org/10.5406/illinois/9780252036378.003.0008.

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This chapter presents an exchange between the author and Keith Thomas, which both have referred to as a “postmortem” on Unionists for Democratic Change. The exchange was edited and compiled from two conversations: The first is a recorded interview between Cloud and Thomas in Wichita, Kansas, on July 17, 2001, the evening after a small demonstration at the union hall earlier that afternoon; the second source is a series of letters exchanged in summer 2006. Here Thomas complicates the author's arguments that mistakes and misdirected focus were to blame for the decline of the union democracy move
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Whitehead, James. Creativity, Genius, and Madness. Oxford University Press, 2017. http://dx.doi.org/10.1093/oso/9780198733706.003.0006.

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This chapter examines the numerous modern psychological studies which sought to establish connections between mental illness and human creativity or intelligence, arguing that these studies have a direct but often occluded lineage from the textual and biographical legacy of Romanticism in the nineteenth century. A line of transmission can be traced in which lists of ‘geniuses’, and illustrative anecdotes of their supposed irrationality and ideal or hallucinatory insanity, were absorbed directly from early critical and biographical writing about Blake, Coleridge, Shelley, Clare, and others, int
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Vivian, Bradford. Invention. Oxford University Press, 2017. http://dx.doi.org/10.1093/acprof:oso/9780190611088.003.0002.

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Chapter 1 uses a historical, and notably unconventional, example of witnessing to demonstrate how bearing witness involves sometimes radical and purposeful rhetorical invention (or reinvention) of historical fact. In his Cotton States Exposition Address (1895), Booker T. Washington, a former slave, romanticized the pre–Civil War South with curious irony. This counterintuitive example indicates that witnesses bear witness in public only if social, political, or moral authorities permit their testimonies. In Washington’s case, the authorities in question presided over the economic and political
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Dowding, Keith. It's the Government, Stupid! Policy Press, 2020. http://dx.doi.org/10.1332/policypress/9781529206388.001.0001.

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Governments increasingly blame citizens for their own failed policies. Individuals can only be held responsible for the choices they reasonably make from the opportunities they have available to them. Government is the major agent in society that creates those opportunities for citizens. We know a good deal about how regulations and institutions affect social outcomes in various policy areas. This book examines five policy areas across the USA, UK and Australia: gun ownership, food manufacture, housing, gambling and recreational drugs. It demonstrates how different regulations affect gun crime
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Book chapters on the topic "Blade demonstrator"

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Magee, Patrick, and Mark Tooley. "Aids to Intubation." In The Physics, Clinical Measurement and Equipment of Anaesthetic Practice for the FRCA. Oxford University Press, 2011. http://dx.doi.org/10.1093/oso/9780199595150.003.0028.

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This device was invented by Sir Ivan Magill and Sir Robert Macintosh to visualise the vocal cords to aid intubation. The curved blade of the Macintosh laryngoscope is still popular as the standard and its design has been reshaped in recent years to reduce the biomechanical forces on the teeth [Bucx et al. 1997, Bucx et al. 1994]. The straight blade of the Magill laryngoscope can make the view easier under some circumstances, as do modern variants [Henderson 1997]. The handle has a battery and a light source in it, and the light is transmitted by a fibre optic cable to the tip of the blade, which is usually at right angles to the handle. There are many different shaped blades to suit different circumstances, particularly to visualise the anatomically different airway of the neonate. Other variants to aid difficult intubations include the Polio laryngoscope, in which the angle between the handle and the blade is an obtuse one and the McCoy laryngoscope, which has a lever to manipulate the tip of the laryngoscope blade to improve the view of the vocal cords [McCoy et al. 1993]; some of these devices are shown in Figure 24.1. In recent years a new range of laryngoscopes has been introduced with fibre optic systems that allow indirect visualisation of the vocal cords via an eyepiece or a small video screen. These devices clearly improve access to the airway where there would otherwise be a laryngoscopic view with a high Cormack-Lehane score. They currently include the McGrath [Ray et al. 2009], the Glidescope, the Airtraq [Lange et al. 2009] (shown in Figures 24.2(a) and (b)), the C-MAC [McElwain et al. 2010 and others] and testing to date has been on manikins. As with all new devices, their efficacy depends on the skill of the user; one study has demonstrated greater skill with the familiar Macintosh laryngoscope than with the newer ones [Powell et al. 2009]. With the emergence of Jakob–Creutzfeldt disease and the recognition of the infectious risk of prions from tonsillar tissue on laryngoscope blades, a range of disposable paediatric blades has been produced, with variable quality of mechanical flexibility and light quality [Goodwin et al. 2006].
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Redmond, Sean. "Representation." In Blade Runner. Liverpool University Press, 2016. http://dx.doi.org/10.3828/liverpool/9781911325093.003.0004.

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This chapter talks about representation, which is a concept given to the way things, objects, places, people come to have meaning in the social world. It mentions the clear and direct sense on the growth of technology in Ridley Scott's Blade Runner, which has resulted in a future where nature and the natural has been nearly entirely snuffed out. It also cites Michael Ryan and Douglas Kellner, who argue that from a conservative perspective, technology represents artifice as opposed to nature and the mechanical as opposed to the spontaneous. The chapter examines how the Blade Runner complicates the relationship between technology and nature and collapses the binary opposition between them. It demonstrates how technology is being validated or authenticated or at least humanised or naturalised in Blade Runner.
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Gálvez, Alyshia. "Deflecting the Blame." In Eating NAFTA. University of California Press, 2018. http://dx.doi.org/10.1525/california/9780520291805.003.0005.

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This chapter critiques some of the assumptions about the causes and solutions for obesity using anthropological and historical understandings of class and ethnic differences in Mexico. It unpacks Mexico’s policy response to obesity and diabetes, including its much lauded soda tax and poverty reduction policies, and demonstrates how a progressive and aggressive policy response has been stunted in ways that favor transnational food corporations, while deflecting the blame for diet-related illness onto individuals, especially women, and historically marginalized poor and indigenous populations. The chapter addresses the idea that better health and wellness can be achieved for the Mexican population through greater education and socialization into healthful ingredients and cooking styles, narrowly defined.
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Baylouny, Anne Marie. "Grievances against Governance." In When Blame Backfires. Cornell University Press, 2020. http://dx.doi.org/10.7591/cornell/9781501751516.003.0005.

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This chapter demonstrates how grievances against the Syrians caused citizens to turn to their states for solutions and mobilize in protest for rent, water, and employment in Jordan, and for electricity, waste disposal, and wages in Lebanon. It recounts how Jordan and Lebanon scapegoated the Syrians and promoted fear that protest would spread the chaos of the Syrian war. It also mentions Jordan and Lebanon's blame on Syrian refugees for their troubles that are caused or perceived to be caused by the refugees. The chapter analyzes the dual reaction to hosting refugees that look to governance to fix the problems that strengthened in Lebanon and affirmed in Jordan. It examines the turn to the state and citizens' reasoning for why the state is responsible for problems in services, resources, and the economy.
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Biborski, Mateusz, Marcin Biborski, and Janusz Stępiński. "Badania nad technologią wybranych zabytków żelaznych." In Ocalone Dziedzictwo Archeologiczne. Wydawnictwo Profil-Archeo; Muzeum im. Jacka Malczewskiego w Radomiu, 2020. http://dx.doi.org/10.33547/oda-sah.10.zn.12.

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The extensive programme of research on artefacts recovered from the Przeworsk culture cemetery in Żelazna Nowa, Comm. Magnuszew, included performing a series of metallographic analyses. Only three objects were subjected to the analyses due to their good preservation: two knives and a shield grip fragment. The aim was to determine the technology of manufacture of particular objects and to identify the raw materials from which they were forged. Microstructure was examined using a Leica DMLM metallurgical microscope, and the observed metal structures were photographed. In addition, metal hardness was measured using the Vickers method, with a load of 10 kG (98N). Carbon content of steel was determined based on microscopic observation. As demonstrated by the analyses, the artefacts were made from metal obtained through the bloomery process from bog iron with a significant admixture of phosphorus. The technology used for manufacture of the analysed artefacts was not particularly sophisticated. They were forged from single pieces of bloomery iron. The only exception is a knife (inv. no. CCLII/15), which was forged from two different pieces of metal welded together, namely from a piece of high phosphorus iron and a piece of soft steel. This made the knife more flexible, while rendering its blade sufficiently hard and more resistant to abrasion. One cannot rule out that the blades of both knives were originally hardened by local carburisation, in connection with later thermal processing (quenching). The results of metallographic research seem to support our assumptions. The two knives and the shield grip were manufactured in local Przeworsk culture workshops, perhaps from iron originating from the centre of metallurgy in the Mazowsze (Mazovia) region.
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Levy, Michelle. "Afterword: Blake’s Digitised Printed Script." In Literary Manuscript Culture in Romantic Britain. Edinburgh University Press, 2020. http://dx.doi.org/10.3366/edinburgh/9781474457064.003.0008.

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The Afterword provides a brief consideration of the unique method of printed script developed by William Blake in his attempt to fuse the media of script and print, drawing and engraving, and thereby collapse the divide between handwriting and typography, word and image. Blake’s attempt to unite script and print aligns with one of the chief objectives of this study and inspires its methodological attempt to deconstruct the problematic separation between the two media, a division that owes itself at least in part, as this book has sought to demonstrate, to Romantic-era debates. This last chapter turns to Blake as a summation of the aims and methods of the book as a whole, which urge a more integrated and holistic approach to the study of literary culture.
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Malawey, Victoria. "The Area in Between." In A Blaze of Light in Every Word. Oxford University Press, 2020. http://dx.doi.org/10.1093/oso/9780190052201.003.0005.

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This chapter explores the ways in which recorded voices interact with external technologies and proposes a continuum of extremes of “wetness” and “dryness” based on the degree to which listeners perceive processing of a vocal signal. The chapter offers an overview of the most commonly used signal processes in popular music production, including vocal layering, overdubbing, pitch modification, recording transmission, compression, reverb, spatial placement, delay, and other electronic effects, which interact with elements from the domains of pitch, prosody, and quality. Analyses of vocally driven music recorded by Björk and cover versions of her songs by other artists demonstrate the wide range of possibilities associated with technological mediation.
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Münzel, Susanne, and Berrin Çep. "The Lithics and Fauna from Heidenschmiede, a Middle Paleolithic Rockshelter in Heidenheim an der Brenz (Swabian Jura)." In Tübingen Publications in Prehistory. Kerns Verlag, 2021. http://dx.doi.org/10.51315/9783935751353.003.

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Heidenschmiede is a Middle Paleolithic rockshelter located in Heidenheim an der Brenz. The site was excavated in 1930 by Eduard Peters, but the archaeological remains were never completely analyzed. The lithic and faunal remains have recently been re-analyzed by the authors. The general features of the lithics are indicative of a Middle Paleolithic technology that includes a non-Levallois blade technology. The faunal remains reflect a Mammoth Steppe ecosystem and include mammoth, horse, woolly rhino and reindeer. Carnivore species play a minor role, although some carnivore gnawing is present. The archeological assemblage of this rockshelter demonstrates clear evidence of human activities, such as flint knapping, butchering of game animals, maintaining of hearths (burnt bones) and preparation of organic tools (retouchers).
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Malawey, Victoria. "Quality." In A Blaze of Light in Every Word. Oxford University Press, 2020. http://dx.doi.org/10.1093/oso/9780190052201.003.0004.

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Similar to what several researchers in the early 1980s dubbed “sonance,” quality comprises more than just timbre, including also intensity, harmonic spectrum, phonation, and changes in sound. Multiple dimensions—including timbre, phonation, onset, resonance, clarity, paralinguistic effects, and loudness—create a singer’s individual vocal quality. Songs recorded and re-recorded by Lucas Silveira demonstrate the dynamic aspects associated with an ever-evolving vocal quality due to the artist’s having undergone hormone replacement therapy. The concept of quality is framed in terms of three different orientations—the physiological, acoustic, and perceptual—all of which are essential to understanding qualitative aspects of vocal delivery, more so than aspects in the domains of pitch and prosody. While sonic markers of identities are fluid social constructions rather than static essential attributes, this chapter considers how qualitative elements may signify artists’ identities and genre.
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Siskin, Clifford. "Blaming the System—Instituting the Political." In System. The MIT Press, 2016. http://dx.doi.org/10.7551/mitpress/9780262035316.003.0006.

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This chapter pursues the effects of that proliferation by identifying the social incarnations of system—the ways that system re-formed society itself. It situates system as a form that mediated modernity, and shows how that mediation gave rise to the concept and practice of systematizing, its sister phenomenon of “instituting,” and the phenomenon of blaming “The System.” System became an object to blame as the traveling of system into other forms produced a new formal effect—a sense of expansive but attenuated authority: something that works both too well—“you can’t beat The System”—and not well enough—it always seems to “break down.” This chapter tracks that notion of blame in the novel, especially in Godwin’s Caleb Williams and Anna Barbauld’s editorial efforts, and links it to what I call “the logic of liberalism.” In that logic, what Smith called the “simple system of natural liberty,” came to be known, simply, as “the system.” In blaming it, we configure “things as they are” as needing change, as capable of being changed, as providing the means of effecting that change, and, crucially as always failing enough to maintain an ongoing need for change. As demonstrated by Macaulay’s speech on the Reform Bill, Liberalism’s object will always be in need of reform because those reforms will always fall short. Liberalism always needs system as an object to blame.
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Conference papers on the topic "Blade demonstrator"

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Concilio, Antonio, Salvatore Ameduri, Bernardino Galasso, and Antonio Gianvito. "Development of a conceptual demonstrator of a SMA-based Rotorcraft blade twist system." In Bioinspiration, Biomimetics, and Bioreplication IX, edited by Akhlesh Lakhtakia, Raúl J. Martín-Palma, and Mato Knez. SPIE, 2019. http://dx.doi.org/10.1117/12.2511963.

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Ameduri, Salvatore, Antonio Concilio, and Bernardino Galasso. "Modeling and Design of an Experimental Demonstrator of Blade Twist Through the SMA Technology." In ASME 2019 Conference on Smart Materials, Adaptive Structures and Intelligent Systems. American Society of Mechanical Engineers, 2019. http://dx.doi.org/10.1115/smasis2019-5573.

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Abstract The paper at hand focuses on the modeling and design of an experimental demonstrator of a blade segment, twisted through Shape Memory Alloy technology. The demonstrator will be used for the wind tunnel tests planned within the Project of SABRE (H2020 Eu Program), aimed at investigating the effects produced by blade oriented morphing technologies, both in fixed and rotary wing configurations. The design approach adopted for a SMA twist concept is herein described in its different phases, moving from the definition of the preliminary layout, its fitting to the reference blade mechanical
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Daynes, Stephen, and Paul M. Weaver. "A Morphing Wind Turbine Blade Control Surface." In ASME 2011 Conference on Smart Materials, Adaptive Structures and Intelligent Systems. ASMEDC, 2011. http://dx.doi.org/10.1115/smasis2011-4961.

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The loads on wind turbine components are primarily from the blades. It is important to control these blade loads in order to avoid damaging the wind turbine. Rotor control technology is currently limited to controlling the rotor speed and the pitch of the blades. As blades increase in length it becomes less desirable to pitch the entire blade as a single rigid body, but instead there is a requirement to control loads more precisely along the length of the blade. This can be achieved with aerodynamic control devices such as flaps. Morphing technologies are good candidates for wind turbine flaps
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Yao, Shulong, D. Todd Griffith, Mayank Chetan, et al. "Structural Design of a 1/5th Scale Gravo-Aeroelastically Scaled Wind Turbine Demonstrator Blade for Field Testing." In AIAA Scitech 2019 Forum. American Institute of Aeronautics and Astronautics, 2019. http://dx.doi.org/10.2514/6.2019-1067.

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Strehlau, Ulrik, and Arnold Ku¨hhorn. "Experimental and Numerical Investigations of HPC Blisks With a Focus on Travelling Waves." In ASME Turbo Expo 2010: Power for Land, Sea, and Air. ASMEDC, 2010. http://dx.doi.org/10.1115/gt2010-22463.

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The motivation for the usage and a further development of blade integrated disk (blisk) technology is driven by a rising demand for efficient, economical and environment-friendly aero engines. In contrast to conventional bladed disks with separated blade and disk design, blisks are either manufactured from solid or disk and blades are assembled by friction welding. Due to an optimized stress distribution, the integrated design leads to potentially higher maximum rotational speeds of the HP-shaft and thus to an improved pressure ratio. This fact offers the opportunity to reduce the number of bl
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Gastaldi, Chiara, Johann Gross, Maren Scheel, Teresa M. Berruti, and Malte Krack. "Modeling Complex Contact Conditions and Their Effect on Blade Dynamics." In ASME Turbo Expo 2020: Turbomachinery Technical Conference and Exposition. American Society of Mechanical Engineers, 2020. http://dx.doi.org/10.1115/gt2020-14630.

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Abstract Dry friction devices such as underplatform dampers are commonly included in turbine bladed disks designs to mitigate structural vibrations and avoid high cycle fatigue failures. The design of frictionally damped bladed disks requires adequate models to represent the friction contact. A widely used approach connects contact node pairs with normal and tangential springs and a Coulomb friction law. This simple model architecture is effective in capturing the softening behavior typically observed on frictionally damped structures subjected to increasing forcing levels. An unexpected harde
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Pohl, Martin, Johannes Riemenschneider, and Hans Peter Monner. "Design and Experimental Investigation of a Flexible Trailing Edge for Wind Energy Turbine Blades." In ASME 2020 Conference on Smart Materials, Adaptive Structures and Intelligent Systems. American Society of Mechanical Engineers, 2020. http://dx.doi.org/10.1115/smasis2020-2256.

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Abstract The demand of affordable, renewable electric energy is still increasing. Wind energy is seen as one of the most promising resources for future electric energy supply. To reduce the cost of wind energy the dimensions of wind energy turbines are still increasing. This leads to higher power output due to the larger rotor diameters, but also due to the higher wind speeds above the boundary layer. This increase in rotor diameter is achieved at the expense of much higher structural loads especially in the rotor blade root. These loads consist of bending moments, that are mainly caused by gr
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Granovskiy, Andrey, Igor Manaev, Vladimir Vassiliev, and Harald Kissel. "Effects of Blade Degradation on Turbine Performance." In ASME 2013 Turbine Blade Tip Symposium. American Society of Mechanical Engineers, 2013. http://dx.doi.org/10.1115/tbts2013-2039.

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The degradation of gas turbine parts due to aging leads to changes in airfoil shape and often causes performance loss. Although the degradation mechanisms and their effects on performance are understood in general (e.g. it is well known that fouling of compressor airfoils reduces mass flow and efficiency), the first quantitative relationships between specific types of part degradation and performance characteristics have only recently been published. In this paper the degradation of turbine blades with aft-loaded airfoils is considered. The typical deviations of shape were identified based on
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Zhang, Q., and L. He. "Impact of Wall Temperature on Turbine Blade Tip Aero-Thermal Performance." In ASME 2013 Turbine Blade Tip Symposium. American Society of Mechanical Engineers, 2013. http://dx.doi.org/10.1115/tbts2013-2018.

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Currently, the aerodynamics and heat transfer over a turbine blade tip tend to be analyzed separately with the assumption that the wall thermal boundary conditions do not affect the Over-Tip-Leakage (OTL) flow field. There are some existing correlations for correcting the wall temperature effect on heat transfer. But they were mainly developed to account for the temperature dependence on fluid properties, and are inherently limited by the empirical nature. The questions arise with regard to: is the OTL aerodynamics significantly affected by the wall thermal condition? And if it is, how can we
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Goldschmidt, Margalit Z., Michael L. Jonson, and Joseph F. Horn. "Acoustic Control of a Maneuverable Marine Hydrokinetic Cycloturbine." In ASME 2019 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2019. http://dx.doi.org/10.1115/imece2019-11381.

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Abstract Marine Hydrokinetic (MHK) cycloturbines exploit tidal currents to generate sustainable electric power. Because of the harsh marine environment, MHK cycloturbines require frequent maintenance and repair, which for current systems necessitates the use of a ship, making the process difficult and costly. A novel MHK cycloturbine system has been designed that uses pitching foils for maneuver, potentially circumventing the costs and difficulties associated with deployment and repairs. The vehicle fatigue is decreased and the vehicle’s acoustic signature underwater is reduced by design of a
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Reports on the topic "Blade demonstrator"

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ASHWILL, THOMAS D. Blade Manufacturing Improvement: Remote Blade Manufacturing Demonstration. Office of Scientific and Technical Information (OSTI), 2003. http://dx.doi.org/10.2172/811156.

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