avionics Flashcards
draw the avionics diagram
what is AHRS
Attitude
Heading
Reference
System
what does AHRS use
MEMS
what is MEMS stand for
Micro
Electro
Mechanical
System
what does MEMS replace
replaces the traditional mechanical gyros
what uses AHRS
attitude, heading indicator (compass), turn coordinator
how does MEMS work
they detect acceleration & thus aircraft movement in three axis
based on microscopically small vibrating structures packaged in similar to integrated circuits
the are able to provide digital &/or analog outputs
they contain several sensors for multiple axis.
used extensively in aviation and small personal devices like smartphones
instead of ten traditional whiskey compass, what does mga archers have
a modern magnetometer
where is the magnetometer located
left wing
what is a magnetometer
a device that measures magnetism and direction, strength or relative change of magnetic field at a particular location
how does a magnetometer work
it sense the earth’s magnetic field and sends data to the AHRS for processing to determine magnetic heading
how does the pitot/static system process info
the ADC (Air Data Computer)
what is ADC
Air
Data
Computer
how does the ADC work
it uses pitot & static pressure combined with total air temperature to calculate indicated & true airspeeds, outside air temperatures & vertical speed fe to autopilots, transponders & out EFIS
what instruments use the ADC
airspeed, vertical airspeed indicator and ALTIMETER
what is the G1000 integrated avionics approved for (in the archer)
approach procedures with vertical guidance including LPV (WAAS) gps, LNAV/VNAV, & LNAV + V
what does RAIM stand for
Receiver
Autonomous
Integrity
Monitoring
what is RAIM
Receiver, Autonomous, Integrity, Monitoring
the capability of a gps to perform integrity monitoring on itself by ensuring available satellite signals meet the integrity requirements for a given phase of flight
what happens without RAIM
the pilot has no assurance of ten gos position integrity
what are the satellite requirements for RAIM
5 to computer RAIM
4 provide 3D navigation
3 provide 3D navigation
what is pseudo range
overlapping pseudo ranges provided gps satellites are used to establish the probable position of the aircraft
4 v. 5 satellites for RAIM
RAIM can work using 4 satellites to predict a position.
if a fifth satellite is available, there is redundancy. the gps receiver substitutes the fifth satellite in place of each of the other satellites, replacing one at a time
