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
Abstract
An investigation has been conducted in the Langley 20-foot free-spinning tunnel to determine the effects of mass and dimensional variations on the spin and recovery characteristics of a model representative of present-day four-place personal-owner airplane designs. The results of the investigation are also analyzed in light of requirements for personal-owner airplanes as set forth in Civil Air Regulations Part 3 as amended to November 1, l949. The investigation showed that for personal-owner, or liaison, airplanes, satisfactory recovery characteristics can be readily obtained even if the tail-damping power factor is not very great, provided the recovery technique used is full rapid rudder reversal followed approximately 1/2 turn later by forward movement of the stick. Other recovery techniques, however, such as premature movement of the stick forward before the rudder is reversed may lead to slow recoveries for the loading condition having mass extended along the fuselage and retracted along the wings in combination with low values of tail-damping power factor.
Document Details
- Document Type
- Technical Report
- Publication Date
- May 01, 1951
- Accession Number
- ADA381955
Entities
People
- Jack H. Wilson
- Walter J. Klinar
Organizations
- National Aeronautics and Space Administration