System Design, Loads, Stresses, Maintenance Flashcards
The removal of items from service at a specified time period regardless of their condition is called?
Hard-Time Maintenance
The climatic region which is most conductive to corrosion is?
Tropical Oceanic
When a structure is changed from a non-deformed into a deformed state, it has experienced?
Strain
What aircraft categories fall under CS-23?
Normal, Utility, Aerobatic, Commuter Aeroplanes
What causes stress?
Cycle loads.
Stress corrosion cracking is caused by a combination of?
Tensile load and corrosive conditions.
On which type of drag does airframe ageing have the greatest influence?
Skin-friction drag
The correct formula to express mechanical stress is?
Force divided by unit area (Force / Area)
The principle of “on condition” maintenance is based on?
Monitoring of critical parameters of a component or a piece of equipment and its replacement if a limit value is exceeded.
What are cyclic loads?
Dynamic reversible loads.
What is the EASA publication which lays down the requirements for design, material quality, build quality and behavioural characteristics for aircraft?
Certification Specifications
What kind of load is Pressurisation?
Cyclic Load
What is stress corrosion?
A type of corrosion that occurs due to a combination of tensile stress and a corrosive environment
The property of a material to return to its original shape after the stress has been removed is called?
Elastic deformation
The ratio of the change in size of the deformed structure to the size of the non-deformed structure is called?
Strain
