Download or read book Quantification of the Boundary Layer Ingestion Benet for the D8 series Aircraft Using a Pressure Rake System written by Michael K. Lieu and published by . This book was released on 2015 with total page 142 pages. Available in PDF, EPUB and Kindle. Book excerpt: This thesis presents the results of experiments carried out at NASA Langley Research Center (LaRC) 14'x22' Subsonic Wind Tunnel to determine the aerodynamic boundary layer ingestion (BLI) benet for the D8 aircraft advanced transport concept. The experiments involved a back-to-back comparison between two D8 aircraft configurations: a podded propulsion system (non-BLI) and a fuselage integrated propulsion system (BLI). The BLI benet was evaluated from ow surveys upstream and downstream of the propulsor using a rotating rake system for the two configurations. The BLI benefit, defined as the mechanical flow power saving at cruise conditions (zero net streamwise force), from the BLI configuration relative to the non-BLI configuration, was found to be 8.2% +/- 0:8%. The experimental-computational approach and the sensitivity analysis of the estimated BLI benefit to uncertainties such as flow angles and instrumentation errors are described in the thesis. The benefits and drawbacks of the rotating rake measurement technique used in the D8-series powered model aircraft experiments are also discussed.
Download or read book TMS 2017 146th Annual Meeting Exhibition Supplemental Proceedings written by The Minerals, Metals & Materials Society TMS and published by Springer. This book was released on 2017-02-18 with total page 777 pages. Available in PDF, EPUB and Kindle. Book excerpt: This collection features papers presented at the 146th Annual Meeting & Exhibition of The Minerals, Metals & Materials Society.
Download or read book Scientific and Technical Aerospace Reports written by and published by . This book was released on 1991 with total page 296 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Commercial Aircraft Propulsion and Energy Systems Research written by National Academies of Sciences, Engineering, and Medicine and published by National Academies Press. This book was released on 2016-08-09 with total page 123 pages. Available in PDF, EPUB and Kindle. Book excerpt: The primary human activities that release carbon dioxide (CO2) into the atmosphere are the combustion of fossil fuels (coal, natural gas, and oil) to generate electricity, the provision of energy for transportation, and as a consequence of some industrial processes. Although aviation CO2 emissions only make up approximately 2.0 to 2.5 percent of total global annual CO2 emissions, research to reduce CO2 emissions is urgent because (1) such reductions may be legislated even as commercial air travel grows, (2) because it takes new technology a long time to propagate into and through the aviation fleet, and (3) because of the ongoing impact of global CO2 emissions. Commercial Aircraft Propulsion and Energy Systems Research develops a national research agenda for reducing CO2 emissions from commercial aviation. This report focuses on propulsion and energy technologies for reducing carbon emissions from large, commercial aircraftâ€" single-aisle and twin-aisle aircraft that carry 100 or more passengersâ€"because such aircraft account for more than 90 percent of global emissions from commercial aircraft. Moreover, while smaller aircraft also emit CO2, they make only a minor contribution to global emissions, and many technologies that reduce CO2 emissions for large aircraft also apply to smaller aircraft. As commercial aviation continues to grow in terms of revenue-passenger miles and cargo ton miles, CO2 emissions are expected to increase. To reduce the contribution of aviation to climate change, it is essential to improve the effectiveness of ongoing efforts to reduce emissions and initiate research into new approaches.
Download or read book The Structure and Behaviour of Laminar Separation Bubbles written by Michael Gaster and published by . This book was released on 1969 with total page 31 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Census of U S Civil Aircraft written by and published by . This book was released on 1988 with total page 364 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Energy Research Abstracts written by and published by . This book was released on 1983 with total page 390 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book I Will Survive written by Gloria Gaynor and published by Macmillan + ORM. This book was released on 2014-03-11 with total page 253 pages. Available in PDF, EPUB and Kindle. Book excerpt: I Will Survive is the story of Gloria Gaynor, America's "Queen of Disco." It is the story of riches and fame, despair, and finally salvation. Her meteoric rise to stardom in the mid-1970s was nothing short of phenomenal, and hits poured forth that pushed her to the top of the charts, including "Honey Bee," "I Got You Under My Skin," "Never Can Say Goodbye," and the song that has immortalized her, "I Will Survive," which became a #1 international gold seller. With that song, Gloria heralded the international rise of disco that became synonymous with a way of life in the fast lane - the sweaty bodies at Studio 54, the lines of cocaine, the indescribable feeling that you could always be at the top of your game and never come down. But down she came after her early stardom, and problems followed in the wake, including the death of her mother, whose love had anchored the young singer, as well as constant battles with weight, drugs, and alcohol. While her fans always imagined her to be rich, her personal finances collapsed due to poor management; and while many envied her, she felt completely empty inside. In the early 1980s, sustained by her marriage to music publisher Linwood Simon, Gloria took three years off and reflected upon her life. She visited churches and revisited her mother's old Bible. Discovering the world of gospel, she made a commitment to Christ that sustains her to this day.
Download or read book NASA SP written by and published by . This book was released on 1962 with total page 220 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Yvain written by Chretien de Troyes and published by Yale University Press. This book was released on 1987-09-10 with total page 244 pages. Available in PDF, EPUB and Kindle. Book excerpt: A twelfth-century poem by the creator of the Arthurian romance describes the courageous exploits and triumphs of a brave lord who tries to win back his deserted wife's love
Download or read book Fresh from the Farm 6pk written by Rigby and published by . This book was released on 2006 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Heart life in Song written by Frances Harrison Marr and published by . This book was released on 1883 with total page 194 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Managing Induced Rural Development written by Jon R. Moris and published by . This book was released on 1981 with total page 208 pages. Available in PDF, EPUB and Kindle. Book excerpt: Monograph on the management of rural development in developing countries - discusses development policies, programme planning and implementation, information needs for project design, project evaluation, types of development projects, agricultural management and agricultural administration, social participation, agricultural development fields, rural women, ideologies, etc., and includes case study on the Masai project in Tanzania. Bibliography pp. 136 to 180, and diagram.
Download or read book Computational Wind Engineering 1 written by S. Murakami and published by Elsevier. This book was released on 2014-06-28 with total page 925 pages. Available in PDF, EPUB and Kindle. Book excerpt: The aim of this volume is to explore the challenges posed by the rapid development of Computational Fluid Dynamics (CFD) within the field of engineering. CFD is already essential to research concerned with fluid flow in civil engineering, and its further potential for application in wind engineering is highly promising. State-of-the-art papers from all over the world are contained here, illuminating the present parameters of the field, as well as suggesting fruitful areas for further research. Eleven papers have been contributed by invited speakers outstanding in the fields of CFD and wind engineering. This volume will serve as a vehicle to promote further development in computational wind engineering.
Download or read book Kumba Africa written by Sampson Ejike Odum and published by iUniverse. This book was released on 2020-11-03 with total page 123 pages. Available in PDF, EPUB and Kindle. Book excerpt: ‘KUMBA AFRICA’, is a compilation of African Short Stories written as fiction by Sampson Ejike Odum, nostalgically taking our memory back several thousands of years ago in Africa, reminding us about our past heritage. It digs deep into the traditional life style of the Africans of old, their beliefs, their leadership, their courage, their culture, their wars, their defeat and their victories long before the emergence of the white man on the soil of Africa. As a talented writer of rich resource and superior creativity, armed with in-depth knowledge of different cultures and traditions in Africa, the Author throws light on the rich cultural heritage of the people of Africa when civilization was yet unknown to the people. The book reminds the readers that the Africans of old kept their pride and still enjoyed their own lives. They celebrated victories when wars were won, enjoyed their New yam festivals and villages engaged themselves in seasonal wrestling contest etc; Early morning during harmattan season, they gathered firewood and made fire inside their small huts to hit up their bodies from the chilling cold of the harmattan. That was the Africa of old we will always remember. In Africa today, the story have changed. The people now enjoy civilized cultures made possible by the influence of the white man through his scientific and technological process. Yet there are some uncivilized places in Africa whose people haven’t tested or felt the impact of civilization. These people still maintain their ancient traditions and culture. In everything, we believe that days when people paraded barefooted in Africa to the swarmp to tap palm wine and fetch firewood from there farms are almost fading away. The huts are now gradually been replaced with houses built of blocks and beautiful roofs. Thanks to modern civilization. Donkeys and camels are no longer used for carrying heavy loads for merchants. They are now been replaced by heavy trucks and lorries. African traditional methods of healing are now been substituted by hospitals. In all these, I will always love and remember Africa, the home of my birth and must respect her cultures and traditions as an AFRICAN AUTHOR.
Download or read book Keene on Chess written by Raymond Keene and published by . This book was released on 1999 with total page 320 pages. Available in PDF, EPUB and Kindle. Book excerpt: A complete step-by-step course which shows you how to play and deepen your understanding of chess.
Download or read book Duty and Desire Book Club Edition written by Anju Gattani and published by . This book was released on 2021-01-27 with total page 344 pages. Available in PDF, EPUB and Kindle. Book excerpt: To uphold family honor and tradition, Sheetal Prasad is forced to forsake the man she loves and marry playboy millionaire Rakesh Dhanraj while the citizens of Raigun, India, watch in envy. On her wedding night, however, Sheetal quickly learns that the stranger she married is as cold as the marble floors of the Dhanraj mansion. Forced to smile at family members and cameras and pretend there's nothing wrong with her marriage, Sheetal begins to discover that the family she married into harbors secrets, lies and deceptions powerful enough to tear apart her world. With no one to rely on and no escape, Sheetal must ally with her husband in an attempt to protect her infant son from the tyranny of his family.sion.
