Investigation of Effects of Geometric Dihedral on Low-Speed Static Stability and Yawing Characteristics of an Untapered 45 deg Sweptback-Wing Model of Aspect Ratio 2.61
Abstract
The results of tests indicated that an increase in positive dihedral resulted in an increase in the tolling moment due to sideslip and also caused the maximum value of rolling moment due to sideslip to occur at increasingly higher lift coefficients. Increasing positive or negative dihedral caused a decrease in the lift-curve slope and an increase in the variation of lateral force with sideslip. Dihedral had no appreciable effect on the yawing moment due to sideslip. The rate of change of rolling moment due to yawing with dihedral angle was nearly independent of the lift coefficient. The lateral force due to yawing became more positive with an increase in positive or negative dihedral. At higher lift coefficients, the lateral force due to yawing became more positive.
Document Details
- Document Type
- Technical Report
- Publication Date
- Sep 01, 1948
- Accession Number
- ADA801526
Entities
People
- Byron M. Jaquet
- M. J. Queijo
Organizations
- National Aeronautics and Space Administration