Some Measurements of the Magnus Characteristics on a Magnetically- Suspended 5-Caliber Ogive Cylinder
Abstract
The Magnus side force and yawing moment on a spinning 5-caliber ogive cylinder have been measured using the magnetic suspension and balance system at this laboratory. Data are reported at M = .27 to .43 and Re = 100,000 to 1,200, 000 at non-dimensional spin rate, PD/2V between 0 and 0.14. The Magnus side force is found to undergo reversal from its classical direction at angles of attack below 5 deg and Re = 770,000. Above 7 deg angle of attack the side force is in the classical direction and in agreement with the data in the literature. The reverse Magnus force is a maximum at 2 deg angle of attack. The peak value is reduced by increase in Reynolds number, by artificially induced boundary layer transition and by the presence of a support sting. At angles of 7 and 9 deg both artificial roughness and a support sting increase the size of the classical Magnus force. Results are compared with other reported data.
Document Details
- Document Type
- Technical Report
- Publication Date
- Jan 01, 1977
- Accession Number
- ADA035861
Entities
People
- C. W. Haldeman
- E. E. Covert
- E. P. Birtwell
- J. B. Coffin
Organizations
- Massachusetts Institute of Technology