Abstract
Tail spinning of aircraft is a subject of interest to manufacturers and operators alike. There is much to be learned in the application of corrective measures. The problem was investigated by the Department of Commerce, and it was determined that there were four factors which in most cases will determine if an airplane will have satisfactory spinning characteristics: It should be stable about all three axes; the center of gravity should be well forward with respect to the center of pressure; the wing loading should be kept below a certain maximum figure depending mostly upon the characteristic of the particular airfoil; the weights of airplane and cargo should be grouped as closely as possible around the center of gravity. One or more of these characteristics were involved in every airplane that spun unsatisfactorily, and the correction of this factor brought about the desired result.
