Walter J. Klinar

Stanley H. Scher

A. I. Neihouse

The study is presented in terms of the following major problem areas: interpretation of results of spin-model research, analytical spin studies, techniques involved in obtaining measurements of various parameters in the spin, effectiveness of controls during spin and recoveries, influence of long noses, strakes, and canards on spin and recovery characteristics, and correlation of spin and recovery characteristics for recent airplane and model designs.

Status of Spin Research for Recent Airplane Designs

Nasa Technical Reports Server (Ntrs)

Henry A. Lee

A supplementary investigation was conducted in the Langley 20-foot free-spinning tunnel on a 1/24-scale model of the Grumman F9F-6 airplane. The primary purpose of the investigation was to reevaluate the spin-recovery characteristics of the airplane in view of the fact that the ailerons had been eliminated from the flaperon-aileron lateral control system of the airplane. A spin-tunnel investigation on a model of the earlier version of the F9F-6 airplane had indicated that use of ailerons with the spin (stick right in a right spin) was essential to insure recovery. The results indicate that with.ailerons eliminated, it may be difficult to obtain an erect developed spin but if a fully developed spin is obtained on the airplane, recovery therefrom may be difficult or impossible. Flaperon deflection should have little effect on spins or recoveries.

Supplementary Investigation in the Free-Spinning Tunnel of a 1/24-Scale Model of the Grumman F9F-6 Airplane Incorporating Only Flaperons for Lateral C

Jack H. Wilson

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.

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

Walter J. Klinar

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