Spin-tunnel Investigation of the Effects of Mass and Dimensional Variations on the Spinning Characteristics of a Low-wing Single-vertical-tail Model Typical of Personal-owner Airplanes

This paper presents the results of a spin-tunnel investigation of a low-wing model typical of present-day four-place personal-owner airplanes to determine the effect of changes in loading, tail design, and wing shape on spin and recovery characteristics. Analysis of the data presented indicates some of the characteristics necessary for meeting present-day spinning requirements for personal-owner airplanes.