Proceedings ArticleDOI
A Numerical Study of the Aerodynamics of Cessna 172 Aircrafts in Echelon formation
M. Gunasekaran,Rinku Mukherjee +1 more
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A vortex-lattice numerical scheme that uses a novel decambering technique to predict post-stall aerodynamic characteristics is used to study the aerodynamics of tandem Cessna 172 aircrafts flying in echelon formation as mentioned in this paper.Abstract:
A vortex-lattice numerical scheme that uses a novel decambering technique to predict post-stall aerodynamic characteristics is used to study the aerodynamics of tandem Cessna 172 aircrafts flying in echelon formation. Results like CL − α from the current method are compared with experiment. Additional results like section Cl distributions over wing spans, CM − α and CLW − αtw (i.e. CL of the leading aircraft for different angles of attack of the trailing aircraft) and analysis for (-)ve y-offset, which are available only from the current numerical method are reported that supplement the experimental results. Detailed post-stall numerical analysis and the effect of chord-wise, span-wise and vertical offsets on the aerodynamics of the formation are also reported.read more
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Journal ArticleDOI
Behaviour of trailing wing(s) in echelon formation due to wing twist and aspect ratio
M. Gunasekaran,Rinku Mukherjee +1 more
TL;DR: In this article, the effect of both geometric and aerodynamic twist on the induced drag of individual lifting surfaces in configuration flight including post-stall angles of attack has been investigated using a vortex lattice method.
Journal ArticleDOI
Analysis of Aerodynamic Hysteresis in Echelon formation
M. Gunasekaran,Rinku Mukherjee +1 more
TL;DR: In this paper, a vortex lattice method using a decambering approach was used to account for flow separation and make the separated flow follow viscous flow condition at high angles of attack over the airfoil and 3D wings.
Proceedings ArticleDOI
Reduction of Induced Drag in Con guration Flight using Wing Twist at Post-Stall Angles of Attack
M. Gunasekaran,Rinku Mukherjee +1 more
Journal ArticleDOI
Aerodynamic analysis of basic and extended lead-trail formation using numerical technique
M. Gunasekaran,Rinku Mukherjee +1 more
TL;DR: In this article, the aerodynamic characteristics of a lead-trail formation in pre and post-stall flow conditions were studied with a view to the possibility of fuel savings, increase in range of operation, delayed flow separation and efficient positioning of the wings with respect to each other.
Journal ArticleDOI
Aerodynamic analysis of wings in Chevron and V formation flights
M. Gunasekaran,Rinku Mukherjee +1 more
TL;DR: In this paper, numerical analysis is conducted using a local camber correction approach called "decambering" to predict pre and post-stall aerodynamic characteristics of multiple lifting surfaces operating in formation.
References
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Book ChapterDOI
XFOIL: An Analysis and Design System for Low Reynolds Number Airfoils
TL;DR: In this article, an inviscid linear-vorticity panel method with a Karman-Tsien compressiblity correction is developed for direct and mixed-inverse modes.
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Airplane flight dynamics and automatic flight controls
TL;DR: This book is very referred for you because it gives not only the experience but also lesson that will give wellness for all people from many societies.
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Low-speed aerodynamics : from wing theory to panel methods
Joseph Katz,Allen Plotkin +1 more
TL;DR: In this article, the authors present a general solution of the Incompressible, Potential Flow Equations over three-dimensional airfoils, with complex variables. But they do not specify the exact solutions with complex variables.
Journal ArticleDOI
Wing upstroke and the evolution of flapping flight
TL;DR: The findings indicate that the primary role of the SC is to impart a high-velocity rotation about the longitudinal axis of the humerus, responsible for positioning the forearm and hand so that their subsequent extension orients the outstretched wing appropriately for the following downstroke.
Journal ArticleDOI
Aerodynamics of formation flight
TL;DR: In this paper, the results of wind-tunnel tests conducted to evaluate aerodynamics characteristics of aircraft in formation flight were reported, which revealed that the spatial offset and the angle of attack of the leading wing had significant impact on the trailing aircraft.