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Dash, S.
- Study of Aerodynamic Characteristics of a Spiroid Winglet
Abstract Views :303 |
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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 :244 |
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.