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KEY OWNER/USER BENEFITS
Reduced flight crew workload Passenger comfort Low wire count due to digital interfaces and resource sharing
in IAPS High reliability from reduced parts count and a controlled
environment in IAPS Category II approach performance RVSM compatible altitude tracking performance Operational flexibility with a variety of flight director
modes available to meet customer requirements Reduced maintenance crew workload through an extensive diagnostics
mode Numerous certifications of this family of autopilot system
and a skilled team of certification engineers Growth potential to provide 21st century
functionality
OVERVIEW
The FCS-4000 Flight Control System is an integrated autopilot and flight
director system designed to take full advantage of the benefits of the Pro Line 4 integrated avionics system. The system
provides dual independent flight directors and a three-axis autopilot with
automatic pitch trim control signals. The yaw damper is dual and independent
in some versions. Additional channels of automatic trim can be provided with
optional trim computer modules. The FCS-4000 reduces pilot workload by providing automatic flight control
of the airplane for nearly all commonly encountered flight situations and
also delivers an exceptionally smooth ride for the passengers and crew. The FCS-4000 is another step in the evolution of digital automatic flight
control systems at Rockwell Collins. The FCS-4000 shares power supply, input/output,
signal conditioning and environmental control with other functions residing
in the Integrated Avionics Processing System Card Cage (ICC). This resource
sharing reduces wiring and installation complexity and improves reliability. The system is highly flexible and can be tailored to meet the airplane
mission with relative ease. This is due in part, to the fact that most of
the functionality of the system is implemented with software. This software
has a legacy of numerous Pro Line 4 applications.
In addition, the system has a variety of Flight Control Panels (FCPs) and
autopilot engage panels available to match the system functionality and the
flight deck operational philosophy. Also, a number of servo motor and mount
options are available to interface with the airplane's FCS. System performance is superior to previous autopilot systems because
the FCS-4000 has benefited through the experience of the Rockwell Collins
flight control design and certification experts as well as data gathered through
advanced modeling techniques and onboard test equipment. Installation is eased by the integration of the Flight Control Computer
(FCC) and the automatic trim computers into the ICC. Rockwell Collins mechanical
engineering staff is prepared to assist with the more difficult aspects of
installation such as servo motor and mount location as well as review the
physical sensor installation for optimum performance with respect to autoflight. Federal Aviation Regulation/Joint Airworthiness Requirement Part 25
certification is eased by Rockwell Collins team of experts who will calibrate
the system on a test vehicle in such a way as to account for all expected
deviations in the production airframes and over the life of the airplane.
These certifications are typically approved for Category II all weather operations.
Rockwell Collins has developed relationships with certification authorities
worldwide.
DESCRIPTION
The Collins FCS-4000 is a fully digital, dual channel, fail-safe autopilot
system that provides exceptional autoflight capability in the Pro
Line 4 avionics systems. The system benefits from integration into
the Pro Line 4 in terms of reliability
and weight. The system typically consists of two FCC-40XX, one FCP-400X, three
SVO-85/SMT-87 Servo Motors/Mounts and a pitch trim servo motor. One or two
linear actuators are used for yaw damping in place of the SVO-85 servo motor
in some applications. The heart of the system is a digital FCC that is implemented via two
Line Replaceable Modules (LRM), each with two microprocessors. This computation
power provides for unsurpassed flight precision and operational flexibility
on two independent flight director channels. The configuration of the FCP offers a single point for either crew member
to make lateral and vertical mode selections as well as reference adjustments. The servo interface with the airplane FCS is through lightweight, high
reliability servo motors. The primary servo motors have dual monitoring tachometers
to ensure that faults at the servo will be detected and quickly isolated.
The servo is connected to the flight control system through a slip clutch
mechanism which provides an over-ride capability in the unlikely event of
a servo motor jam.
OPERATION AND PERFORMANCE
Each of the FCS-4000 flight director channels sends commands to the
primary flight display and to the autopilot function. The selected mode can
be flown manually or automatically. The typical modes and functionality are
provided in the following tables. Available Lateral Modes Roll Hold | Provides roll guidance to
hold roll attitude Typical roll limit - 32° Holds Heading
when engaged below 5° bank | Selected
Heading | Provides roll guidance to capture and track the Selected
Heading (HSI bug) Typical roll limit - 27° | Track Hold | provides roll guidance to
capture and track the ground Track provided by an IRS or FMS. | Half
Bank | Provides reduced roll limit, typically 15° Manually
selectable or automatic at altitude | Navigation | Provides guidance relative
to the Source selected on the PFD: VOR - Capture and track of the selected Course LOC - Capture and track of the Localizer FMS - Follows lateral commands provided by the FMS | Approach | Provides
guidance relative to the Source selected on the PFD: | Backcourse | Provides guidance to the
backcourse of the selected Localizer. Automatic backcourse with Approach is
also available. | Go
Around | Provides roll guidance to hold wings level at selection
of Go Around. | Takeoff | Provides roll guidance to
hold heading at liftoff. | Rudder
Boost | Provides rudder pedal force assistance in the event
of engine failure. |
Available Vertical Modes Pitch Hold | Provides pitch guidance
to hold the pitch attitude. Typical roll limit - +20°and -15° | Vertical
Speed | Provides pitch guidance to hold the Vertical Speed
reference (VS bug). Typical range ±8000 fpm. | Altitude Hold | Provides pitch guidance
to hold the Pressure Altitude present at mode selection | Altitude
Select | Provides pitch guidance to capture and track the Preselected
Altitude. | Flight Level Change | Provides pitch guidance
to climb or descent towards the Preselected Altitude. Capable of using preprogrammed
reference speeds or capturing and tracking the speed bug. | Speed
Hold | Provides pitch guidance to capture and track the IAS/MACH
reference (IAS/MACH bug). | Automatic IAS/MACH
Transition | Provides
automatic transition between the IAS reference and MACH reference at a predetermined
altitude. | Climb | Provides
pitch guidance to capture and track a preprogrammed IAS/MACH climb profile
determined by the OEM. | Descend | Provides pitch guidance
to capture and track a prepregrammed IAS/MACH descent profile determined by
the OEM. Capability exists to switch to a preprogrammed VS reference at a
fixed altitude, also determined by the OEM. | Approach | Provides
pitch guidance to capture and track the Glideslope for the Localizer selected
on the PFD. | Go Around | FD guidance only to a fixed
pitch angle at selection of Go Around. Value determined by OEM, typically 10°. | Takeoff | FD
guidance only to a fixed pitch angle for takeoff. Capable of an automatic
alternate angle for single engine operation. | VNAV | Follows pitch guidance provided
by an external vertical navigator, typically the FMS. | VNAV
- Enhanced | Enables the enhanced vertical functionality of the
Collins FMS VNAV. This provides vertical references and constraints with crews
choice of vertical modes. For example, speed mode can be coupled with VNAV
to allow the crew to choose the desired IAS/MACH. Desired speed can be from
the FMS VNAV flight plan via the speedbug or the crew may manually set the
speed as usual with speed mode. Similar capability applies to the other vertical
modes. | Overspeed | Automatically asserts Speed
Mode with a reference below Vmo/Mmo when Vmo/Mmo is exceeded. | Windshear
Escape Guidance | Provides pitch guidance to assist the crew in maneuvering
through severe vertical gusts when the windshear detection system issues a
warning. | Turbulence Mode | Softens the control responses
to improve ride comfort in turbulent conditions. |
FCC-40XX Flight Control Computer
The FCC-40XX is a LRM that resides in the integrated avionics processing
system. The FCS-4000 requires two of these modules. Each FCC provides an independent
flight director function. The flight director operates in the mode selected
by the crew and performs the guidance computations that result in commands
provided to the flight crew displays via V-bars or crosshairs and to the autopilot
function.
The FCCs operate together to provide the autopilot function. Each FCC
computes its own servo command to drive the servo motors. These commands are
routed through a midvalue voter. These analog commands are also torque limited.
Servo rate is used as feedback of servo movement to close the servo loop. The FCCs also operate together to provide the automatic pitch trim function.
The FCCs sense torque on the primary pitch servo and generate arm and command
signals to drive the pitch trim servo or external trim control system. Discrete
signals are received from the trim system for feedback of trim system response
to commands as well as for monitoring of unexpected trim system operation.
FCP-400X Flight Control Panel
The FCP-400X provides crew interface with most flight director and autopilot
functions. It contains a pushbutton and typically, a Light Emitting Diode
(LED) annunciator light for each mode selection available. The FCP transmits
button presses to the FCC for mode selection requests and illuminates LEDs
which confirm that the FCC has accepted the mode request.
Various versions of the FCP are possible to accommodate the application.
Variations include available mode selections, panel color and lighting power.
The choices are identified in the Selection Guide. The FCP-400X also provides the crew interface with the autopilot and
yaw damper. It contains the autopilot and yaw damper, flight director transfer
and turbulence mode pushbuttons. The FCP provides system engage requests to the FCC and provides clutch
engage power to the servos when the FCC acknowledges the engagement.
MSP-85/APP-85
The FCS-4000 is compatible with the MSP-85/APP-85 control panels used
in the APS-85 system. See the APS-85 section for more information on these
control panels.
SVL-4000 Linear Actuator
The SVL-4000 is a direct current motor and linear actuator with position
feedback outputs. For these actuators, the FCC provides low level command
signals as the amplifier circuits are located in the actuator.
SVO-85( ) Servo Motor
The SVO-85( ) is a DC servo motor with a dual rate feedback tachometers.
The motor is mechanically coupled to the servo capstan through a magnetic
engage clutch.
Three versions of servo may be applied to meet the torque requirements
of the control systems. Variations of each type exist to accommodate physical
installation needs. Each servo type provides a choice of electrical harness interface such
as standard unit connector or pendant cable.
SMT-85/87( ) Servo Mount
The SMT-85/87( ) provides the mechanical interface
with the airplane control system. The capstan accommodates the bridal cable
or other mechanism for coupling to the airplane control system. The capstan
couples to the servo motor through a magnetic engage clutch. A slip clutch
is also incorporated to allow crew override in the event of a servo motor
jam.
Several versions of the SMT exist to accommodate the servo motor torque
rating and the type of aircraft control system.
ATC-4000 Automatic Trim Computer
The ATC-4000 functions in a manner similar to the pitch trim function
described in the FCC section above.
FCS-4000 SYSTEM CERTIFICATIONS
CRJ-100/200 | FCC-4000 | TC/FAA/JAA | Beech
TTTS/TCX/TIA | FCC-4001 | FAA | Dassault Falcon 2000 | FCC-4002 | FAA/JAA/DGAC | Saab
2000 | FCC-4003 | FAA/JAA | IAI Astra SPX/Galaxy,
Gulfstream G200 | FCC-4005 | FAA/CAAI/JAA | Canadair
Challenger 604 / Challenger 601 | FCC-4006 | TC/FAA | Canadair CRJ-700, CRJ-900 | FCC-4010 | TC/FAA/JAA | Beechjet
400A | FCC-4007 | FAA | Dassault Falcon 50EX/50 | FCC-4009 | FAA/JAA/DGAC | Dassault
Falcon 20 F5 | FCC-4011 | FAA |
TYPICAL SYSTEM
FCC-40XX | 2 | Flight Control Computer | Varies with applications | FCP-400X | 1 | Flight
Control Panel | Varies with applications | SVL-4000 | 0 or 1 or 2 | Linear Actuator | Varies with applications | SVO-85(
) | 2 or 3 | Servo Motor | Varies
with applications | SMT-87/85( ) | 2 or 3 | Servo Mount | Varies with applications |
Note(s): | Some systems support dual AFCS functionality using four FCCs
with a single set of servo motors/mounts In these cases, Servo Switching Modules (SSM-4000) are
required Part numbers vary with application The system is typically interfaced with a trim system; however,
a trim servo motor can be accommodated See Installation Hardware table for connectors
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FCC-4006 | 4 | Flight Control Computer | 822-0809-510 | FCP-4003 | 1 | Flight
Control Panel | 822-0182-001 | SMT-87A | 1 | Servo Mount | 822-0259-001 | SMT-87B | 1 | Servo
Mount | 822-0260-001 | SSM-4000 | 2 | Servo Switching Module | 822-0782-001 | SVL-4000 | 2 | Linear
Actuator | 622-9968-102 | SVO-85A | 1 | Primary Servo | 622-4404-101 | SVO-85B | 1 | Primary
Servo | 622-5027-101 |
Note(s): | See Installation Hardware table for connectors
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SPECIFICATIONS
FAA TSO | C52a (Flight Director) C52b C9c
(Autopilot) | C52a
(Flight Director) C52b C9c (Autopilot) | C9c (Autopilot) | Environmental | DO-160C DO-160D  YBB[CLM] E1XXXXXZ
[BZ] AZZWZ[Z3Z3]XA | DO-160C DO-160D [A2F1]-BB[BMS]
E1XXXXZ[BZ] AZAUA [Z3Z3]XX | DO-160C A2[-BB] EE2RXDXXA[BZ]
AZAWB[Z3Z3]XB | EUROCAE | ED-14C | ED-14C | ED-14C |
Height | 222
mm (8.73 in) | Varies with application | 85.6 mm (3.37 in) | Width | 151 mm (5.95 in) | Varies
with application | 56.9 mm (2.24 in) | Length | 52
mm (2.06 in) | Varies with application | 355.6 mm (14.0 in) nominal | Weight | 1.04 kg (2.3 lb) | Varies
with application | | Mounting Information | Mounts in Collins ICCNo
special hardware required | Varies | 2.15 kg (4.75 lb) |
Temperature | -55 to 70° C | -20 to 70° C | -55 to 70° C | Altitude | 55,000 ft | 55,000
ft | 55,000 ft |
Primary | 28
V DC, 25 W (internal dissipation,
supplied by ICC) | 28 V DC, 4 W (total
internal dissipation) | 28 V DC, approx 70
W max | Lighting | N/A | 5 V AC/DC, 13W 28 V DC, 13W | N/A | Trim | 28
V DC, 1 A | N/A | N/A | Servo
Motor (each) | 28 V DC, 2 A | N/A | N/A | Clutch (each) | N/A | 28 V DC, 1A | N/A |
FAA TSO | C9c (Autopilot) | C9c (Autopilot) | C9c (Autopilot) | C9c (Autopilot) | Environmental | DO-160C
A2F2Y/BB/ CLM/E1/ XXXXXZ/ BZ/AZAYA KXX | DO-160A
A2F2/B/RY/ XXXXXXA/ BZ/AZ | DO-160A A2F2/B/RY/
XXXXXXXXXXX | DO-160C [A2F3]-BB[ET] XWFXXXXXXXXXXXXB | EUROCAE | ED-14C | ED-14A | ED-14A | |
Height | 222
mm (8.73 in) | 86 mm (3.37 in) | 86 mm (3.37
in) | 86 mm (3.37 in) | Width | 151 mm (5.95 in) | 109 mm (4.3 in) | 109 mm (4.3 in) | 109 mm (4.3 in) | Length | 17
mm (0.69 in) | 199
mm (7.85 in) | 199
mm (7.85 in) | 199
mm (7.85 in) | Weight | 0.45 kg (1.0 lb) | 2.41 kg (5.3 lb) | 2.64 kg (5.8 in) | 3.0 kg (6.6 in) | | | Mounts
in Collins ICC No special hardware required | Mounts to Collins SMT-85/87 using standard
aircraft quality hardware | Mounts
to Collins SMT-85/87 using standard aircraft quality hardware | Mounts to Collins SMT-85/87 using
standard aircraft quality hardware |
| Temperature | -55 to 70° C | -55 to 70° C | -55 to 70° C | | Altitude | 55,000 ft | 55,000
ft | 55,000 ft |
| Primary | 28 V DC, 84 W | 28
V DC 56 W at max torque 21 W clutch (supplied by FCP-400X) | N/A |
SELECTION GUIDE
The FCC-4000 and FCP-4000 are part of an integrated Pro Line 4 package Note: See also mode select panels and autopilot panels in the APS-85/86
section SVO-85A | 20-55 in lb torque, servo
mounted connector | 622-4404-101 | | | 20-50
in lb torque, pendant cable | 622-4404-102 | SVO-85B | 50-100 in lb torque, servo
mounted connector | 622-5027-101 | | | 50-110
in lb torque, pendant cable | 622-5027-102 | SVO-85C | 100-200 in lb torque, servo
mounted connector | 622-6717-103 | | | 100-200
in lb torque, pendant cable | 622-6717-104 |
SMT-85A | Servo Mount,
20-50 in lb, 0.093 in cable, 2 in capstan | 622-5028-001 | | | Servo Mount, 20-50 in lb, 0.093 in cable, 2 in capstan,
sealed | 622-5028-101 | SMT-85B | Servo Mount,
50-110 in lb, 0.093 in cable, 2 in capstan | 622-5029-001 | | | Servo Mount, 50-110 in lb, 0.062 in cable, 2
in capstan | 622-5029-002 | | | Servo Mount, 50-110 in lb, 0.093
in cable, 2 in capstan, sealed | 622-5029-101 | | | Servo Mount, 50-110 in lb, 0.093 in cable | 622-5029-102 | | | Servo Mount, 50-110 in lb, low-friction,
2 in capstan | 622-5029-111 | SMT-85C | Servo Mount, 100-200 in lb, 0.093 in cable | 622-6718-001 | | | Servo Mount, 100-200 in lb, 0.093
in cable, sealed | 622-6718-101 | | | Servo Mount, 100-200 in lb, 0.062 in cable | 622-6718-102 | SMT-85B | Servo Mount,
50-110 in lb, 3.0 in lever arm, sealed | 622-6509-103 | SMT-86C | Servo Mount, 100-200 in lb, 3.0 in level arm, sealed | 622-6719-103 | SMT-87A | Servo Mount,
20-50 in lb, 0.093 in cable, low-friction, 2 in capstan | 822-0259-001 | SMT-87B | Servo Mount, 50-100 in lb, 0.093 in cable, low-friction,
2 in capstan | 822-0260-001 | SMT-87C | Servo Mount,
100-200 in lb, 0.093 in cable, low-friction, 2 in capstan | 822-0261-001 | Note(s): | ( ) suffix on SVO and SMT must match |
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INSTALLATION HARDWARE
| | 2 | Connector | Varies with application |
| | 1 | SVO-85A (-001/101) connector | 359-0301-230 | | | 1 | SVO-85A (-002/102) connector | 359-0060-230 | | | 1 | SVO-85B (-001/101) connector | 359-0301-240 | | | 1 | SVO-85B (-002/102) connector | 359-0060-240 | | | 1 | SVO-85C (-003/103) connector | 359-0301-250 | | | 1 | SVO-85C
(-004/104) connector | 359-0060-250 |
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