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Dash, S.
- Study of Aerodynamic Characteristics of a Spiroid Winglet
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Authors
Affiliations
1 Aeronautical Department, Bhubaneswar Engineering College, Bhubaneswar, Odisha, IN
1 Aeronautical Department, Bhubaneswar Engineering College, Bhubaneswar, Odisha, IN
Source
Technology Spectrum Review, Vol 1, No 2 (2016), Pagination: 17-20Abstract
In this paper the effect of spiroid winglet on aerodynamic efficiency was investigated. A sweptback and tapered wing with NACA 0015 airfoil section was considered as base geometry. Above wing is modified by providing spiroid winglet at the tip of wing. Velocity of 35 m/s was taken to simulate this. CFD code was use to carry out the computation. The simulated results were compared with experimental result to validate the CFD code. In this process tangential velocity, lift coefficient and drag coefficient were computed initially. The simulations obtained from the CFD code show a very good agreement with the experimental results. The aerodynamics parameters were calculated at different geometric angle of attack (4°, 8°, 12° and 16°). The numerical results were compared with the result of base line model to find out the effect of spiroid winglet. It was observed the drag is reduced by using spiroid winglet.Keywords
Tip-Vortex, Spiroid Winglet, Drag, Wingtip, Induced Drag.
References
- H. Zimmer, “Aerodynamic optimization of wings at subsonic speeds and the influence of wingtip design” NASA TM-88534, 1983.
- A. S. Thomas, “Aircraft drag reduction technology - A summary,” AGARD, Report 723, Belgium, 1985.
- Airguide, “Jet Aircraft World Fleet Summary,” Air Guide Online, 2006.
- I. Kroo, “Nonplanar wing concepts for increased aircraft efficiency,” ICACFCAS, 2005.
- P. Gerontakos, and T. Lee, “Near-field tip vortex behind a swept wing model,” Experiments in Fluids, vol. 40, pp. 141-155.
- U-type Pulsejet Engine
Abstract Views :245 |
PDF Views:3
Authors
Affiliations
1 Aeronautical Department, Bhubaneswar Engineering College, Bhubaneswar, Odisha, IN
1 Aeronautical Department, Bhubaneswar Engineering College, Bhubaneswar, Odisha, IN
Source
Technology Spectrum Review, Vol 2, No 1 (2017), Pagination: 18-20Abstract
Ever since the Wright brothers have invented the piston engine airplane in 1903, tremendous amounts of time and effort were put into researching to build airplanes. With time the design had changed and the propulsion medium were developed. The desire for hypersonic flight necessitated the supersonic combustion ramjet engine potentially expanding the speed envelope to the Mach 7 range. The pulse jet work without any rotation device like compressor and turbine. Also it does not have any separate enclosed chamber for combustion. In this report we it is discussed about Ramjet Engine. This include history of Ramjet engine along with the important time stamps where the ramjet engine had grown. Also it is discussed about working principle of Ramjet along the operational mechanism. And a ramjet model was fabricated and the calculation were made for this model.Keywords
Ramjet, Thrust, Weight to Power Ratio.References
- P. G. Hill, and C. R. Peterson, Mechanics and Thermodynamics of Propulsion, in 2nd ed., 1992.
- H. I. H. Saravanamuttoo, G. F. C. Rogers, and H. Cohen, Gas Turbine Theory, in 5th ed., Pearson, 2001.
- G. C. Oates, Aerothermodynamics of Gas Turbine and Rocket Propulsion, 1988.
- J. D. Mattingly, Gas Turbine Propulsion, McGraw Hill, 1996.
- N. A. Cumpsty, Jet Propulsion, Cambridge University Press, 2000.
- First Record of Seriolina nigrofasciata (Ruppell, 1829) (Perciformes: Carangidae) from Odisha Coast, India
Abstract Views :99 |
PDF Views:104
Authors
Affiliations
1 Estuarine Biological Regional Centre, Z.S.I., Gopalpur-on-Sea, Odisha – 761002, IN
2 Marine Fish Section, Zoological Survey of India, Kolkata – 700016, IN
1 Estuarine Biological Regional Centre, Z.S.I., Gopalpur-on-Sea, Odisha – 761002, IN
2 Marine Fish Section, Zoological Survey of India, Kolkata – 700016, IN
Source
Records of the Zoological Survey of India - A Journal of Indian Zoology, Vol 117, No 2 (2017), Pagination: 186-189Abstract
The paper reports Seriolina nigrofasciata (Ruppell, 1829) (Perciformes: Carangidae) ô€irst time from Odisha coast with description of material collected from the Rushikulya estuary. Photographic evidence on occurrence of reef associate Apolemichthys xanthurus (Bennett, 1833) and Chaetodon decussatus Cuvier, 1829 in the sea near Gopalpur, Odisha is also provided in this paper.Keywords
Carangidae, First Record, Reef ridge, Odisha Coast.Full Text
References
- Barman, R.P., Mishra, S.S., Kar, S., MuMierjee, P. and Saren, S.C. 2007. Marine and estuarine fish fauna of Orissa. Rec. zool. Surv. India, Occ. Paper, 260: 1-186.
- Barman, R.P., MuMierjee, P. and Kar, S. 2000. Marine and estuarine fishes. State Fauna Series 8: Fauna o f Gujarat, Part 1: 311-411 (Zoological Survey of India, Kolkata).
- Behera, D.P., Mohapatra, D., Naik, S. and Mishra, R.K. 2015. First record of Cephalopholis sonnerati (Red Coral Grouper) from Gopalpur Coastal Waters, Bay of Bengal. Indian Journal o f Geo-Marine Sciences, 44(8): 1207-1212.
- Gopi, K.C. and Mishra, S.S. 2014. Diversity of marine fish of India. In, Venkataraman, K. and Sivaperuman, C. (eds.), Marine Faunal Diversity in India: Taxonomy Ecology and Conservation. Accademic Press, Elsevier Inc., USA: 171-193.
- Joshi, K.K., Nair, R.J., Samad, E.M.A., Thomas, S., Kakati, V.S., Jasmine, S., Varghese, M., Miriam Paul, S., Sukumaran, S., George, R.M. and Manisseri, M.K. 2011. The Carangids o f India - a Monograph. Central Marine Fisheries Institute, Kochi. pp. 437
- Mishra, S.S. 2013. Coastal marine fish fauna of east coast of India. In, Venkataraman, K., Sivaperuman, C. and Raghunathan, C, (eds.), Ecology and Conservation of Tropical Marine Faunal Communities, Springer-Verlag, Berlin, Heidelberg: 245-260.
- Mishra, S.S., Rath, S. and Dash, S. 2010. On the occurrence of a flying fish, Parexocoetus mento (Valenciennes) from Orissa coast. Rec. zool. Surv. India, 110(2): 135-136.
- Mohana Rao, K., Murthy, K.S.R., Reddy, N.P.C., Subrahmanyam, A.S., Lakshminarayana, S., Rao, M.M.M., Sarma, K.V.L.N.S., Premkumar, M.K., Sree, A. and Bapuji, M. 2001. Submerged beach ridge lineation and associated sedentary fauna in the inner shelf of Gopalpur coast, Orissa, Bay of Bengal. Current Science, 81(7): 828-833.
- Mohapatra, A., Ray, D. and Tudu, P.C. 2013. New record of Convict Surgeon fish Acanthurus triostegus (Linnaeus, 1758) from Chilika Lake. Rec. zool. Surv. India, 113(4): 75-77.
- Mohapatra, A., Ray, D., Tudu, P.C. and Mishra, S.S. 2014. Range extension and first report of Monodactylus kottelati (Perciformes: Monodactylidae) from Chilika Lagoon, east coast of India. Marine Biodiversity Records, 7: e11 (2 pages) (Online) doi: 10.1017/ S1755267214000013.
- Ray, D., Tudu, RC. and Mohapatra, A. 2014. First report of three Surgeon fishes (Family: Acanthuridae) from the north of East Coast of India. J. Bombay nat. Hist. Soc., 111(1): 54-57.
- Seth, J.K. and Sahoo, S. 2014. First record of Diagramma pictum (Thunberg, 1792) from the Odisha coast, India. Indian Journal of Geo-Marine Sciences, 43(6): 977-979.
- Smith-Vaniz, W.F. 1984. Carangidae. In, Fischer, W. and Bianchi, G. (eds). FAO species identification sheets for fishery purposes. Western Indian Ocean; (Fishing Area 51). Food and Agricultural Organization of the United Nations, Rome, 1: pag. var.
- Smith-Vaniz, W.F. 1986. Family No. 210: Carangidae. In, Smith, M.M. and Heemstra, P.C., Smith’s Sea Fishes, Springer-Verlag, Berlin (ISBN 978-3-642-82860-7): 638-661.
- Smith-Vaniz, W.F. 1999. Carangidae. Jacks and scads (also trevallies, queen fishes, runners, amberjacks, pilotfishes, pampanos, etc.). In, Carpenter, K.E. and Niem, V.H. (eds). PAO species identification guide fi)r fishery purposes. The living marine resources o f the Western Central Pacific. Volume 4. Bony fishes part 2 (Mugilidae to Carangidae). Rome, FAO; 2659-2756.
- Thomas, RA„ Sree, A. and Bapuji, M. 2004. Affinity and zoogeography of the gorgonid fauna off Gopalpur (Orissa) coast (Bay of Bengal). Ecology, Environment and Conservation Papers, 10(2): 117-122.
- Thomas, RA„ Sree, A., Bapuji, M„ Rao, K.M. and Murthy, K.S.R. 2002. Biodiversity, zoogeography and affinity of Orissa sponges. In, Sree, A, Rao, Y.R., Nanda, B. and Misra, V.N. (eds.). Proceedings of the National Conference on Utilisation o f Bioresources - NATCUB2002. Regional Research Laboratory, Bhubaneswar: 351-360.