The attitude indicator uses a gyroscope to display the orientation and bank angle of an aircraft relative to the Earth's horizon. It shows pitch and bank on a display divided into blue sky and brown ground colors. The instrument remains level with gravity and may develop small errors over long flights or high acceleration. Pilots use it to view a miniature airplane symbol and horizon bar separating the sky and earth representations, along with degree indices marking the bank angle.

1. KEVAL.MAKWANA
Altitude
Indicator

2. What is the attitude indicator?
 An attitude indicator (AI), also known as
gyro horizon or artificial horizon or
attitude director indicator ( when it has a
Flight Director), is an instrument used in an
aircraft to inform the pilot of the orientation
of the aircraft relative to Earth's horizon.

3. Opration...
Traditional, self-contained attitude indicators
use a gyroscope (powered via vacuum or
electrically) to establish an inertial
platform.
The gyroscope is geared to a display that has
two degrees of freedom, simultaneously
displaying pitch and bank.

4.  The display may be colored to indicate the
horizon as the division between the two
colored segments (typically blue for sky and
brown for ground), and is intended to be
intuitive to use.
 Attitude indicators have mechanisms that
keep the instrument level with respect to
the direction of gravity.

5.  The instrument may develop small errors,
in pitch or bank during extended periods of
acceleration, deceleration, turns, or due to
the earth curving underneath the plane on
long trips.

6. Use...
 1> "miniature airplane", horizontal lines
with a dot between them representing the
actual wings and nose of the aircraft.
 2> the center horizon bar separating the
two halves of the display, with the top half
usually blue in color to represent sky and
the bottom half usually dark to represent
earth.

7.  3> degree indices marking the bank angle.
They run along the edge of the dial. On a
typical indicator, there is a zero angle of
bank index, there may be 10 and 20 degree
indices, with additional indices at 30, 60
and 90 degrees.

8. Thank
you !
Prepared by
(keval.makwana)
-Kabir