Containment casing

摘要

A containment casing is provided comprising a radially outer layer; an intermediate energy absorbing layer, and a retention framework for retaining an aerofoil blade in the event of detachment of whole or part of the blade. The retention framework is distributed axially and circumferentially along the casing and extends substantially radially inwardly at least partially through the intermediate energy absorbing layer.

主权项

1. A containment casing for containing a blade or a blade fragment of a gas turbine engine, the containment casing comprising:
a radially outer layer; a radially inner layer; an intermediate energy absorbing layer disposed between the radially outer layer and the radially inner layer; and a retention framework disposed axially and circumferentially along the containment casing and extending substantially radially inwardly through the intermediate energy absorbing layer, the retention framework terminating in a plurality of radially inwardly facing engagement features, the inwardly facing engagement features are located immediately adjacent to the inner layer and taper radially inwardly in a direction oriented towards a surface of the radially inner layer; and at least one engagement feature penetrates through the entire thickness of the radially inner layer in response to the blade or the blade fragment impacting the containment casing.