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RCA2600-P Series Installation/Operation Guide
Rev
A
KELLY MANUFACTURING COMPANY
KMC
KMC
Publication No.1401-2
SECTION 1: INSTRUMENT DESCRIPTION
1.1 GENERAL DESCRIPTION
An attitude indicator, also known as a gyro horizon or artificial horizon, is an instrument used in an aircraft to inform the pilot of the
orientation of the airplane relative to the earth. It indicates pitch (fore and aft tilt) and bank (side to side tilt), and is a primary instru-
ment for flight in instrument meteorological conditions. Attitude indicators also have significant applications under visual flight rules.
The
RCA2600-P
is a Digital Attitude Indicator that has no gyroscope. It utilizes several internal accelerometers to provide Pitch and
Roll information. Airspeed is part of the calculations needed in this process. In some instances with high performance aircraft, sud-
den acceleration/deceleration or high g-forces adversely effect the accelerometer speed calculations. The
RCA2600-P
Series adds
Pitot-Statc
airspeed input which ensures constant and accurate speed data for greater reliability.
Because the
RCA2600-P
has no mechanical gyroscope, it is much more stable than traditional horizons. The unit is designed to
work in 360 degrees of pitch and roll and, unlike a mechanical unit, the
RCA2600-P
can tolerate angles in pitch and roll that would
cause a gyroscopic unit to tumble.
On the attitude indicator you will see two yellow horizontal lines with a dot between them. The horizontal lines represent the wings
and the dot represents the nose of the aircraft. If the symbolic airplane dot is above the horizon line (more blue background) - the
aircraft is nose up. If the symbolic airplane dot is below the horizon line (more brown background) - the aircraft is nose down. When
the dot and wings are on the horizon line, you are in level flight. If the lines representing the wings roll to the left or the right, the
aircraft is probably starting a turn. The actual bank angle is calibrated around the circumference of the instrument dial. The pitch
angle is indicated by a series of calibration lines, each representing 5° or 10° of pitch.
1.2 PHYSICAL DESCRIPTION
There are two basic models, the
RCA2600-P
(P for Pitot-Static) which has
Pitch Sync
and the
RCA2600-P-G
which does not have
Pitch Sync. The Pitch Sync feature allows the pilot to adjust the symbolic airplane to match the horizon during pitch up or pitch
down level flight. Both versions come in standard 3 inch and 2 inch sizes. Refer to table 1.1 below for a list of leading particulars.
OPERATING VOLTAGE .......................................................................................................................................... 9 to 32VDC
STARTING CURRENT ............................................................................................................ 9VDC: 0.18 to 0.22 AMPs MAX
RUNNING CURRENT ...................................................................................... (14VDC SYSTEM) ..................0.20 AMP MAX
(28VDC SYSTEM) ..................0.15 AMP MAX
CIRCUIT BREAKER SIZE............................................................................................................................................... 2 AMP
SETTLING ERROR ........................................................................................................... 1º MAXIMUM IN ROLL AND PITCH
OPERATING TEMPERATURE RANGE .............................................................................................................-20º TO +55º C
MATING CONNECTOR ........................................................................................................MS3116E8-4S OR EQUIVALENT
WEIGHT ........................................................................................................... RCA2600-3P ....................................... 6.75 oz
RCA2600-2P ....................................... 4.75 oz
DIMENSIONS/PANEL CUTOUT .....................................................................................................SEE FIGURES 1.1 and 1.2
EYE VIEWING ANGLE ENVELOPE ....................................................................Horizontal Left and Right: 35
°
Left, 35
°
Right
Vertical Up and Down: 35
°
Up, 35
°
Down
Minimum distance from display surface: 6 inches
Maximum distance from display surface: 48 inches
SOFTWARE VERSION ......................................................................................................................................................3.0.2
FAA SPECIFICATION CONFORMANCE ............................................ TSO-C4c, TSO-C113, DO-160F and DO-178B Level C
EASA SPECIFICATION CONFORMANCE ................................................................................... ETSO-C4c and ETSO-C113
MEETS OR EXCEEDS ..........................................................................................................................AS8034A and AS396B
TABLE 1.1, LEADING PARTICULARS
Summary of Contents for 102-0202-04-10
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