An Investigation of the Effect of Tip Shape on the Low-Speed Aerodynamic Characteristics of Large-Scale Swept Wings
Abstract
In an effort to remedy some of the undesirable pitching-moment characteristics of swept wings with relatively high aspect ratios and to improve the marl Timm lift coefficient obtainable, an investigation has been made of the effect of tip shape on the aerodynamic characteristics of large scale ^5 swept-forward and k-5 swept-back wings. Also toward this end, the swept-back wing was tested with bodies of revolution, with and without ducts, mounted on the tips. The results show that none of the variations of tip shape investigated nor addition of bodies of revolution at the tips produced major changes in the characteristics of the swept wings. Tips cut off oblique to the air stream exhibited slightly better pitching-moment characteristics at high angles of attack for the swept forward and swept-back wings. Tuft studies indicated that the unstable pitchlng-mament characteristics of swept-back wings at high, angles of attack are caused by a rapid development of leadingedge stall, beginning at the tip and progressing inboard.
Document Details
- Document Type
- Technical Report
- Publication Date
- Nov 13, 1947
- Accession Number
- ADA801434
Entities
People
- Walter C. Walling
Organizations
- National Aeronautics and Space Administration