11.3 Nacelles And Pylons Engine Mounts Flashcards
how is an engine mount created?
in a web like structure that has very high endurance and very strong
what are the purposes of an engine mount ?
supressing vibrations and distrabuting them evenly through the structure for smooth flight and to connect the engine to the fitted structure
how are engine mounts for reciprocating engines constructed?
a structure made of steel tubing consisting of the engine mount ring, bracing members (V-struts) and fittings ofr attaching the mount to the fuselage or the wing nacelle
how are engine mounts for reciprocating engines mounted to the aircraft?
special heat treated steel bolts
what are dynafocal mounts ?
suppress engine vibrations while maintaining the flow of force resulting from torque
as aircraft and their engines become heavier and larger, what mounts are now used on reciprocating engined aircraft?
shock mounts
what is a metal snubber ?
a mechanical device designed to protet components from excess shock, becoming rigid and absors the dynamic energy
in what direction are the engine mounts mounted ?
angled to a point of centre of gravity
what do the engine brackets do on a turbofan engine?
support the engine and transmit the loads from the engine to the aircraft structure
what are turbofan engines made of ?
stainless steel or a similar metal
what is used to isolate vibration in a turbine engine?
vibration isolating engine mounts
where are the vibration isolation engine mounts located?
each engine is supported by two vibration isolation engine mounts, one forward and one aft
what loads does the forward vibration isolator mount carry?
vertical, side and axial loads
what type of loads does the aft vibration isolation mounts take ?
only vertical and side loads.
do the vibration isolation engine mounts account for thermal expansion?
yes, without applying axial loads to the engine flanges
