Method for cryogenic cleaning of e.g. external structure, of turboshaft engine of civil aircraft, involves moving projection part along trajectory from reference position by positioning part with respect to structure to meet characteristics

摘要

The method involves defining a trajectory to be followed by a dry ice pellets projection part (5) from an established envelope. Characteristics associated with displacement and positioning of the part during cleaning of the part with respect to an external structure (2) of a turboshaft engine (3) and adjacent parts (4) are determined according to the trajectory and pre-defined parameters. Projection of pellets is started by the part. The part is moved along the trajectory from a reference position by positioning the part with respect to the structure to meet determined characteristics. An independent claim is also included for a system for cryogenic cleaning of an external structure of a turboshaft engine and adjacent parts mounted on the turboshaft engine.