AIRPLANE
OPERATIONS
MANUAL
POWERPLANT
REVISION 41
2-10-50
Page
11
Code
01
Copyright © by Embraer. Refer to cover page for details.
PRESSING TAKEOFF BUTTON
Current Mode During takeoff phase (1) Post takeoff phase
E T/O E T/O RSV E T/O (3)
(1) Takeoff phase is configured when altitude is less than 1700 ft
above takeoff altitude, five minutes or less time has been elapsed
since thrust set selection for takeoff and current thrust mode is one
of the takeoff modes.
(2) T/O RSV to E T/O is a thrust decrease.
(3) If current thrust is E T/O RSV, flight altitude is between 1700 ft
above takeoff altitude and 15000 ft and the takeoff button is
pressed, thrust will decrease to E T/O.
FAN-SPEED SCHEDULING
The thrust management logic calculates the corrected fan-speed
request at any point in the flight envelope. The scheduled, corrected
fan speed is computed as a function of pressure altitude, Mach
number, air temperature and other airplane signals.
The thrust lever quadrant has five significant thrust positions defined
as:
Thrust Lever Position
Thrust Level Angle
Maximum Reverse 0-4°
Minimum reverse 14-22°
Idle 22-28°
Thrust Set 72-78°
Maximum Thrust 78-85°
Maximum reverse and maximum thrust are defined by mechanical
stops at either extremes of the thrust lever movement. Idle is defined
by a mechanical gate that must be lifted to allow the trust lever to
transition from forward flight to the reverse flight region. The THRUST
SET position on the thrust lever is delineated by a detent at 75°. For
any given pressure altitude, Mach number and air temperature the
To Next Page
