The purpose of the Bell Helicopter Structural Design Manual is to provide a source of structural analysis methods, material data, procedures and policies applicable to structural design. 

The data contained herein are largely condensations of information obtained from the Federal Government, universities, textbooks, technical publications and Bell reports and memoranda. As much as possible the sources are noted and shown in a list of references at the beginning of the manual.

This manual is intended to provide the structural designer with necessary design information in the form of equations, curves, tables and step-by-step procedures. Derivations are purposely omitted to make the manual easier to use. Comments and suggestions regarding this manual are encouraged. They should be directed to the Chief of Structural Technology, Bell Helicopter Textron.