Abstract: A piezoelectric motor comprising a stator; a rotor having a rotor inner circumferential surface; a piezoelectric element retained on the stator; power supply means in communication with said piezoelectric element to operably effect longitudinal resilient mechanical oscillations in the element; a plurality of pusher members each having (a) at least one first portion defining a pusher abutting surface abutting the rotor inner surface, (b) at least one second portion defining a piezoelectric element engaging surface distal of the pusher abutting surface, and (c) a third portion defining a retained surface; retainer means in abutment with the pusher member retained surface to releasably retain the pusher member in abutment with the piezoelectric element engaging surface and the rotor inner surface and wherein the longitudinal resilient mechanical oscillations effect coplanar movement of the pusher member; and the first portion is so shaped and inclined as to operably effect circumferential movement of the circumf

Abstract: A gas turbine engine mounting arrangement (22) for attaching a gas turbine engine (10) to an aircraft via a pylon (18). The arrangement (22) comprising a main mounting means (23) which carries the engine loads under normal operating conditions, and an auxiliary mounting structure (25). The auxiliary mounting structure. (25) comprises a safety bracket (44), and auxiliary interconnection means (29) are arranged to connect the bracket (44) to the engine (10) independently of the main mounting means (23) and so that the auxiliary mounting structure (25) is substantially unloaded under normal operating conditions. The auxiliary interconnection means (29) and the safety bracket (44) engaging with the engine (10) and carrying substantial engine loads in the event of failure of the main mounting means (23). Preferably the safety bracket (44) is interposed and sandwiched between a main bracket (2), forming part of the main mounting structure (23), and the main bracket (2) and the pylon (18).