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computer(s).
THRUST REVERSE LEVERS
The thrust levers are linear throttles, which means that reverse thrust is not modulated by use of piggyback levers, instead,
the thrust reverser levers are lifted above a gate, which allows the thrust lever itself to translate aft to modulate the reverse
thrust level. The reverse thrust setting is for ground use only.
POWERPLANT
Volume 2 Flight Crew Operating Manual Sep 13/2004
18-01-18 CSP 100-6 REV 1
THRUST LEVERS (Cont)
OFF
RUN
L ENGINE
OFF
RUN
TO
CLB
MAX
REV
APR
TO
IDLE
MAX
R ENGINE
REV
TO/GA
CFO1801002_006
AUTOMATIC
POWER
RESERVE
APR
IDLE
IDLE FORWARD
THRUST
TOGA
SWITCH (2)
CLB
CLIMB
REV
IDLE
REVERSE
THRUST
MAX REV
MAXIMUM
REVERSE
THRUST
TAKE-OFF/GO AROUND
(TO/GA) SWITCH
THRUST
REVERSER
LEVER
REV
REV
CLB
IDLE
TO/GA
APR
TO
TAKE
OFF
THRUST
THRUST
REVERSER
CONTROL
LEVER
FRICTION
KNOB
V 1
POWERPLANT
Sep 13/2004 Flight Crew Operating Manual Volume 2
REV 1 CSP 100-6 18-01-19
THRUST REVERSER SYSTEM
DESCRIPTION
The thrust reversers help stop the aircraft on landing and during a rejected takeoff (RTO). The system is operable on the
ground only; the reversers will not deploy in flight.
COMPONENTS AND OPERATION
THRUST REVERSER
The thrust reverser is powered by the left hydraulic system for the left reverser and the right hydraulic system for the right
reverser and is controlled by the FADEC and electrical signals from the airplane.
The hydraulic system has:
- Isolation control unit
- Directional control unit
- Hydraulic and electro-hydraulic primary locks
- Door actuators
- Tertiary actuator locks
The electrical system comprises:
- Isolation control unit inhibition switch
- Stow switches — two per door, signal feedback to the FADEC
- Deploy switch — one per door, signal feedback to the FADEC
- Maintenance test switch — allows thrust reverser operation without engine operating
CFO1801002_011
UPPER ACTUATOR
LOWER ACTUATOR
LOWER
DOOR
UPPER
DOOR
LOWER TERTIARY LOCK
UPPER TERTIARY LOCK
HYDRAULIC
PRIMARY LOCK
ELECTRO-HYDRAULIC
PRIMARY LOCK
POWERPLANT
Volume 2 Flight Crew Operating Manual Sep 13/2004
18-01-20 CSP 100-6 REV 1
THRUST REVERSER SYSTEM (Cont)
CFO1801002_010
THRUST REVERSER STOWED
FORWARD THRUST
THRUST REVERSER DEPLOYED
REVERSE THRUST
THRUST REVERSER STOWED
FORWARD THRUST
THRUST REVERSER DEPLOYED
REVERSE THRUST
EXHAUST NOZZLE
LOWER DOOR
UPPER DOOR
ACTUATOR
EXHAUST
CONE
EXHAUST UNIT
FIXED STRUCTURE
ACTUATOR
POWERPLANT
Sep 13/2004 Flight Crew Operating Manual Volume 2
REV 1 CSP 100-6 18-01-21
THRUST REVERSER SYSTEM (Cont)
REVERSE THRUST OPERATION
When reverse thrust is desired, the thrust levers are drawn aft to the IDLE position, where the thrust reverser levers may
be lifted, thus allowing the main thrust levers to be pulled further rearward to the REV soft detent. This rearward movement
signals the FADEC (via the RVDTs) and the thrust reversers (via the microswitches in the TQA) that thrust reverser deployment
has been commanded. Once in the REV detent, it is unnecessary to hold the thrust reverse levers up, as they stay
in place until the pilot selects forward operation. Interlock balks will prevent movement of the levers rearward beyond REV
until the thrust reverser deploy switches provide feedback that the thrust reverser doors are fully deployed. During the deployment
sequence, a white REV icon is displayed on the EICAS, and N1 target and bug are removed from the display.
Once the doors are fully deployed, the REV icon changes to a green color, and the interlock baulk is released. This will
allow for thrust lever modulation between the REV and MAX REV positions. N1 target and bug are set to the maximum
reverser N1 setting.
To stow the thrust reversers, the main thrust levers are moved forward to the IDLE position. As the lever move between
the REV and IDLE positions, the thrust reverser levers will return to their forward thrust position. Interlock balks will prevent
movement of the main thrust levers forward beyond IDLE until the thrust reverser stow switches provide feedback
that the doors have completely closed. During the stow phase, the REV icon will go from green to white, and the N1 target
　
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