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RCA2610 Series Installation/Operation Guide
Rev
D
KELLY MANUFACTURING COMPANY
KMC
KMC
Publication No.1401-3
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
RCA2610
Digital Electronic Attitude Indicator receives digital information from a series of accelerometers which is processed
to actuate a display that has two dimensions of freedom, simultaneously displaying pitch and bank. The display is colored to
indicate the horizon as the division between the two colored segments (blue for sky and brown for ground), and is intended to be
intuitive to use.
Because the
RCA2610
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
RCA2610
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
RCA2610
which has
Pitch Sync
and the
RCA2610-G
(G for general use) 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 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............................................................................................................................................... 1 AMP
SETTLING ERROR ........................................................................................................... 1º MAXIMUM IN ROLL AND PITCH
OPERATING TEMPERATURE RANGE .............................................................................................................-20º TO +55º C
MATING CONNECTOR ........................................................................................................MS3116E8-4S OR EQUIVALENT
WEIGHT ........................................................................................................... RCA2610-3 ......................................... 6.75 oz
RCA2610-2 ......................................... 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 ..............................................................................................................Version 2.0.6 and 2.0.7 (NVG)
FAA SPECIFICATION CONFORMANCE ............................................................................... DO-160G and DO-178B Level C
See Appendix C for TSO Certification by part number
MEETS OR EXCEEDS ........................................................................................................... AS8034B, AS8004 and AS396B
TABLE 1.1, LEADING PARTICULARS
