This content is not included in
your SAE MOBILUS subscription, or you are not logged in.
Studies of Hingeline Gap, Trailing Edge Treatment, Lower Surface Deflector on Spoiler Characteristics and Flow
Annotation ability available
Sector:
Language:
English
Abstract
Wind tunnel test have been conducted to determine effects of certain design variables on spoiler performance and spoiler flow field characteristics.
Measurements include forces, oil flow surveys on a vertical splitter plate, and wake velocity and turbulence measurements using a dual split-film anemometer system. Results include the effects of spoiler design variables, such as: hingeline gap, lower surface venting and deflector, spoiler trailing edge notching and spoiler porosity. Hingeline gap, porosity, lower surface venting and lower surface deflector can be designed to reduce control dead-band tendency. Wake turbulence studies show that certain modifications can be utilized to diminish peak frequencies in the wake.
Recommended Content
| Technical Paper | Wind Tunnel and Flight Development of Spoilers for General Aviation Aircraft |
| Technical Paper | APPLICATIONS OF ADVANCED AERODYNAMIC TECHNOLOGY TO LIGHT AIRCRAFT |
Topic
Citation
Wentz, W., Ostowari, C., and Mack, M., "Studies of Hingeline Gap, Trailing Edge Treatment, Lower Surface Deflector on Spoiler Characteristics and Flow," SAE Technical Paper 810564, 1981, https://doi.org/10.4271/810564.Also In
References
- Ellis D.R. Tilak N.W. An In-Flight Investigation of Non-Linear Roll Control SAE paper 750528 1975
- Mack M.D. Seetharam H.C. Seetharam H.C. Kuhn W.C. Bright J.T. Aerodynamics of Spoiler Control Devices AIAA paper 79-1873 1979
- Schlichting H. Boundary Layer Theory. Seventh Edition McGraw-Hill 1979
- McCroskey W.J. Introduction to Un steady Aspects of Separation in Sub-Sonic and Transonic Flow (Paper #6 in “Three-Dimensional and Unsteady Separation at High Reynolds Num bers.”) AGARD-LS-94 1978
- Roshko A. On the Drag and Shedding Frequency of Two-Dimensional Bluff Bodies NACA TN 3169 July 1954