Description

The purpose of this report is to show an application of the Method of Least Work to multiply redundant structures in a manner which will be concise and will show an efficient method of attach and tabulation of results. The development of the work equations and their solution will be carried out with the aid of a method of tabulation which the writer believes to be more efficient than those usually described in connection with the Method of Least Work. The purpose of this method is to reduce the labor required to solve several simultaneous equations and thereby avoid chances for confusion or the introduction of errors. The framework of the U.S.A. C-11 or Lepere airplane wings is used as an example in this report and an analysis of the structure in the low incidence flight condition is carried through in detail. It is assumed that the reader is already familiar with the principles of Least Work. However, where this is not the case, he is referred to McCook Field Report No. 2212, Chapter II, Airplane Design, Articles 35 to 37, inclusive.