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Aerodynamic forces and moments on an ogive cylinder at incidence

Published online by Cambridge University Press:  03 February 2016

S.C. Luo ,
Y.T. Ng  and
T.T. Lim
S.C. Luo
Affiliation:
Department of Mechanical Engineering, National University of Singapore, Singapore
Y.T. Ng
Affiliation:
Department of Mechanical Engineering, National University of Singapore, Singapore
T.T. Lim
Affiliation:
Department of Mechanical Engineering, National University of Singapore, Singapore
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Abstract

In flows over an ogive cylinder placed at incidence, it is well documented that a side force acts on the cylinder. However, little is known about the relation between the side force (CFy) and other force and moment components. In this note, the variations of three force and three moment components, acting on the ogive cylinder, with roll angle are measured simultaneously. The model was placed at four different angles-of-attack, namely α = 30°, 45°, 50° and 60° and the results show that in addition to CFy, the variation of CFz, CMx, and CMz with the roll angle also exhibit the square wave like behaviour at α = 45° and 50°, and with the same cross over φ positions, while CFx and CMy remain relatively constant irrespective of the roll angle. The magnitudes of CFx and CMy were found to increase with angle of attack and were thought to be due to the increase in normal frontal area.

Type
Research Article
Information
The Aeronautical Journal , Volume 108 , Issue 1084 , June 2004 , pp. 311 - 314
Copyright
Copyright © Royal Aeronautical Society 2004 

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References

1. Lamont, P.J. Pressures around an inclined ogive cylinder with laminar, transitional or turbulent separation, AIAA J, 1982, 20, (11), pp 1492–1499.Google Scholar
2. Zilliac, G.G., Degani, D. and Tobak, M. Asymmetric vortices on a slender body of revolution, AIAA J, 1991, 29, (5), pp 667–675.Google Scholar
3. Dexter, P.C. and Hunt, B.L. Effects of roll angle on the flow over a slender body of revolution at high angles of attack, AIAA Paper 81-0358, 1981.Google Scholar
4. Luo, S.C., Lim, T.T., Lua, K.B., Chia, H.T., Goh, E.K.R. and Ho, Q.W. Flowfield around ogive/elliptic-tip cylinder at high angle of attack, AIAA J, 1998, 36, (10), pp 1778–1787.Google Scholar
5. Lamont, P.J. and Hunt, B.L., Pressure and force distributions on a sharp-nosed circular cylinder at large angles of inclination to a uniform subsonic stream, J Fluid Mechanics, March 1976, 76, (3), pp 519–559.Google Scholar
6. Owen, F.K., and Johnson, D.A. Wake vortex measurement of an ogive cylinder at α = 36 degrees, J Aircr, 1979, 16, (9), pp 577–583.Google Scholar
7. Yanta, W.J. and Wardlaw, A.B. Jr., Flowfield about and forces on slender bodies at high angles of attack, AIAA J, March 1981, 19, (3), pp 296–302.Google Scholar
8. Wu, G., Wang, T. and Tian, S. Investigation of vortex patterns on slender bodies at high angles of attack, J Aircr, 1986, 23, (4), pp 321–325.Google Scholar
9. Moskovitz, C.A., Hall, R.M. and Dejarnette, F.R. New device for controlling asymmetric flow fields on forebodies at large alpha, J Aircr, 1991, 28, (7), pp 456–462.Google Scholar
10. Asghar, A., Stahl, W.H. and Mahmood, M. Suppression of vortex asymmetry and side force on a circular cone, AIAA J, 1992, 32, (10), pp 2117–2120.Google Scholar
11. Rao, D.M. Side force alleviation on the slender, pointed forebodies at high angles of attack, J Aircr, 1979, 16, (11), pp 763–768.Google Scholar
12. Lua, K.B., Lim, T.T., Luo, S.C. and Goh, E.K.R. Helical-groove and circular-trip effects on side force, J Aircr, 2000, 37, (5), pp 906–915.Google Scholar
13. Lee, A.S., Luo, S.C., Lim, T.T., Lua, K.B. and Goh, E.K.R. Side force on an ogive cylinder: Effects of control devices, AIAA J, 2000, 38, (3), pp 385–388.Google Scholar
14. Lamont, P.J. and Hunt, B.L. Prediction of aerodynamic out of plane forces on ogive nosed circular cylinder, J Spacecraft Rockets, 1977, 14, (1), pp 38–44.Google Scholar