Dynon Avionics EFIS-D10 Users Guide - Manual (Page 33)

5/25/2005 29
Glossary
Accelerometer
We use accelerometers in the EFIS-D10 to measure the acceleration of the aircraft, which is an
important factor in determining the pitch and attitude of the aircraft. The accelerometers used in the
EFIS-D10 are solid state Micro-electromechanical Systems or MEMS accelerometers.
Analog Describes signals that can have an infinite number of values. All of the EFIS-D10’s transducers
sample analog values such as the earth’s magnetic force, acceleration, and pressure.
Angle Of
Attack The acute angle between the chord of an airfoil and a line representing the undisturbed relative
airflow.
Attitude The rotational status of the unit with respect to the surface of the earth, displayed on the main screen
using an artificial horizon line.
Digital Describes signals that have discreet values. Much of the EFIS-D10 is based on digital technology.
This means that analog values that are brought in by the various transducers are converted into a
digital format to be read and interpreted by the onboard microprocessors
Gyro The EFIS-D10 uses solid-state rate gyros to measure the rate of rotation around each of X, Y, and Z
axes. These provide to the attitude equation information about turn rates and they are integrated to
provide position information.
Heading The line of path along which the unit moves with respect to the earth’s magnetic north pole,
measured in degrees.
Magnetic field
sensor The EFIS-D10 uses magnetic field sensors as a three dimensional electronic compass. The onboard
circuitry uses these sensors to resolve the earth’s magnetic field. With this information the device can