Wind Tunnel Drag and Stability of Solid Flat Circular, T-10, and Ringslot Parachute Models with Centerlines
Abstract
Wind tunnel measurements of the aerodynamic force coefficients of solid flat circular, T-10, and ringslot parachute models with and without centerlines were made. Test conditions were M = 0.1 and Re/ft = 670,000 on models with a nominal diameter of approximately 16 in. The results showed general similarities in the effects of various centerline lengths on the different models. With centerline lengths about equal to the suspension line length, tangent force increases from 20% to 26% were obtained. At these configurations the force in the centerline is about one-half the total tangent force. The model trim angle and slope of the moment curve at that point were determined. These show the solid flat circular and T-10 models to be less stable, while the ringslot parameters were nearly unchanged.
Document Details
- Document Type
- Technical Report
- Publication Date
- May 01, 1973
- Accession Number
- AD0764364
Entities
People
- H. G. Heinrich
- R. A. Noreen
Organizations
- University of Minnesota