AEIS CHAPTER 8 Flashcards
EMI refers to
electromagnetic inteference
EMC refers to
electromagnetic compatibility
EM refers to
electromagnetic fields
RF refers to
radio frequency
EMI refers to the i) of an electronic device in the vicinity of an ii) in the iii) spectrum emitted by iv)
disruption, electromagnetic field, radio frequency, another device
EMC is the ability of a device to function i) in its ii) without introducing iii)
satisfactorily, electromagnetic environment, intolerable electromagnetic disturbances
an aircraft is constantly exposed to i)
electromagnetic(EM) fields
EM fields can cause i) to aircraft systems if not managed properly
interference
the design of aircrafts requires incorporation of i) so that ii) does not negatively affect other systems
electromagnetic compatibility (EMC) , electromagnetic interference (EMI)
HIRF refers to
high intensity radiated fields
some of the design considerations for EMC include i) away from possible source of ii)
placing sensitive circuit or receiver, electrical noise
some of the design considerations for EMC is to ensure i) to ii) to minimize receiving iii)
i) suitable orientation of reciever
ii) signal source
iii) unwanted signals
some of the design considerations for EMC include introducing a i) from noisy source or receiver
grounding shield
some of the design considerations for EMC include minimising i) from sources with ii)
minimising potential electrical noise, careful design
some of the design considerations for EMC include designing i) to be less sensitive to ii)
highly-selective receivers, electrical noise
how can EMI problems in an aircraft be minimized
ensure all electronic equipment and systems is operated with a good electrical ground system
i) connecting avionic systems should be ii) to keep unwanted RF energy from coupling into or radiating outwards
harnesses and cables, electrically shielded
components such as line i) and ii) can be installed in power lines and circuits to reduce EMI susceptibility
electronic filters, transient-absorbers
HIRF requirements are applied to ensure i) of aircraft electrical and electronic systems without ii), iii) or iv)
i) safe operation
ii) interruption
iii) failure
iv) malfunction
to overcome residual charge, aircraft is fitted with a i) or ii) which contains a compound providing the tyre with iii)
nose-wheel tyre, tail-wheel tyre, with good electrical conductivity
to overcome residual charge, a short i) is used to secure the i) or ii) to the iii)
flexible steel wire, nose wheel, main wheel axle members, earth or ground point
why traditional aircraft are able to survive lightning strikes
traditional aircraft had metallic structures and the effect of Faraday’s cage shielded the aircraft against the effect of lightning strikes
