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Analysis of High-Lift Wing Systems

Published online by Cambridge University Press:  07 June 2016

Suresh H Goradia
Affiliation:
Lockheed Georgia Company, Marietta
Gene T Colwell
Affiliation:
Georgia Institute of Technology, Atlanta
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Summary

A method which can be used for the design of blown or unblown wing sections is described in this paper. A brief description of a variety of theoretical methods for computation of different fluid flow phenomena encountered on high-lift wing systems is presented. The most significant type of viscous flow - a confluent boundary layer flow, which is present on the upper surface of the flap, the vane and the main component of a high-lift system – is described and its importance to the performance of high-lift systems is illustrated. Results of computation of pressure distribution, boundary-layer characteristic, and lift coefficient for two-dimensional high-lift systems are compared with experimental data in order to establish the validity and limitations of the method.

Type
Research Article
Copyright
Copyright © Royal Aeronautical Society. 1975

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References

1 Goradia, S H Bennett, J A Methods for analysis of two-dimensional airfoils with subsonic and transonic applications. Work done under contract with US Army Research Organization, ARO-D Project Number 398, Contract Number DA-31-124-ARO-D-398, July 1966.Google Scholar
2 Stevens, W A Goradia, S H Braden, J A Mathematical model for two-dimensional multi-component airfoils in viscous flow. NASA CR-1843, July 1971.Google Scholar
3 Squire, H B Young, A D The calculation of the profile drag of aerofoils. ARC R & M 1838, November 1937.Google Scholar
4 Young, A D The calculation of the profile drag of aerofoils and bodies of revolution at supersonic speeds. College of Aeronautics Report 73, ARC 15 970, 1957.Google Scholar
5 Cohen, C B Reshotko, E Similar solutions for the compressible laminar boundary layer with heat transfer and pressure gradients. NACA Report 1293, 1956.Google Scholar
6 Baker, J V Boundary layer transition on NACA 0012 and 23012 airfoils in 8-foot high-speed wind tunnel. NACA WR-L682, 1940.Google Scholar
7 Schlichting, H Ulrich, A Zur Berechnung der Umschläger Laminar-Turbulent, Jahrbuch deutscher Luftfahrtforschung, Vol 1, p 8, 1942.Google Scholar
8 Goradia, S H Lyman, V L Laminar stall prediction and estimation of CL max . ER-11078, Lockheed Georgia Company, March 1971. Also paper accepted for publication in Journal of Aircraft.Google Scholar
9 Peterson, B F The boundary layer and stalling characteristics of the NACA 64A010 airfoil section. NACA FN 2235, November 1950.Google Scholar
10 Ludwieg, H Tillmann, W Untersuchungen über die Wandschubspannung in Turbulenten Reibungsschichten. Ingenieur Archiv, Vol 17, pp 288299, 1944, (English translation in NACA TM 1285, 1950).Google Scholar
11 Altman, J M Hayter, N L F A comparison of the turbulent boundary layer growth on an unswept and swept wing. NACA TN 2500, Ames Aeronautical Laboratory, NACA Washington, September 1951.Google Scholar
12 Goradia, S H Confluent boundary layer flow development with arbitrary pressure distribution. PhD thesis, Georgia Institute of Technology, 1971.Google Scholar
13 Goradia, S H Colwell, G T Parametric study of a two-dimensional turbulent wall jet in a moving stream with arbitrary pressure gradient. AIAA Journal, Vol 9, p 2156, November 1971.CrossRefGoogle Scholar
14 Seebohm, T Boundary layer transition and wake measurements at low Mach number for an aerofoil with single-slotted flap. Report 69-1, Mechanical Engineering Research Laboratories, McGill University, Montreal, 1969.Google Scholar
15 Foster, D N The flow around wing sections with high-lift devices. AIAA Paper 71-96, presented at 1971 meeting in New York.CrossRefGoogle Scholar
16 Rotta, J Schubspannungs Verteilung und Energie Dissipation bei turbulenten Grenzschichten, Ingenieur Archiv, Vol 20, pp 195207, 1952.Google Scholar
17 Foster, D N Note on methods of calculating the pressure distributions over the surface of two-dimensional cambered wings. Royal Aircraft Establishment Technical Report 67045, April 1967.Google Scholar
18 Williams, B R An exact test case for the plane potential flow about two adjacent lifting aerofoils. ARC R & M 3717, September 1971.Google Scholar
19 Wieghardt, K Tillmann, W Zur turbulenten Reibungsschicht bei Druckanstieg. Z W B Kaiser Wilhelm Institut für Strömungsforschung, Göttingen, UM 6617, 1941.Google Scholar
20 Nash, J F A practical calculation method for compressible turbulent boundary layers in two-dimensional and axisymmetric flows. Lockheed-Georgia Research Memorandum, El 2-9428, 1967.Google Scholar