New method for the presizing of heavy lift civil transport helicopters

Abstract

In this work, a new method based on an iterative and multi-level process is used for presizing of heavy lift helicopters having a capacity of 90 passengers over a range of at least 1000Km. This method is based on an iterative and multi-level process. It allows to define in broad outlines several dimensioning characterized by a series of parameters, starting from mission specification and helicopter characteristics in the form of modeling. The models used in this study, are based on a combination of statistical and physical laws. Some components of the heavy lift helicopter configuration are similar to those of an airplane. Thus, for this reason, the statistical laws of weight relative to a transport plane are applied to these organs. The results obtained were compared with the values obtained by the NASA NDARC tool for the same helicopter configuration. The difference of the parameters does not exceed 8%, giving an average relative difference of 4%.