Takeoff - Embraer EMB145 Operation Manual

TAKEOFF

TAKEOFF SPEEDS
Takeoff performance in the FAA approved EMB-145 AFM and
ETOASG (First Principles) software is presented in two formats for
airplanes equipped with A1 engines:
a) Balanced Field Length (fixed V1/VR ratio):
- Flaps 9°, ALT T/O-1 thrust - AFM.
- Flaps 9°, T/O-1 thrust - AFM.
- Flaps 22°, T/O-1 thrust - AFM.
b) Unbalanced Field Length (variable V1/VR ratio):
- Flaps 9°, ALT T/O-1 thrust - ETOASG (First Principles).
- Flaps 9°, T/O-1 thrust - ETOASG (First Principles).
- Flaps 22°, T/O-1 thrust - ETOASG (First Principles).
TAKEOFF SPEEDS FOR BALANCED PERFORMANCE
Takeoff speeds V1, VR and V2 for Balanced Performance are read
from the tables using the procedure below:
a) Enter the appropriate table with Airport Pressure Altitude and move
right as far as the appropriate Static Air Temperature Range.
b) Enter the table with Airplane Brake Release Gross Weight and
move right as far as the appropriate temperature column. Read
V1, VR and V2. If necessary, interpolate between two weights to
obtain the corrected speed.
TAKEOFF
PERFORMANCE
Takeoff speeds V1, VR and V2 for Unbalanced Performance are read
from the tables using the procedure below:
a) Enter the appropriate table with Airport Pressure Altitude and move
right as far as the appropriate Static Air Temperature Range.
b) Enter the table with Airplane Brake Release Gross Weight and
move right as far as the appropriate temperature column. Read VR
and V2. If necessary, interpolate between two weights to obtain the
corrected speed.
c) For determining V1, enter the appropriate takeoff analysis with the
Static Air Temperature and wind and read V1 for the Maximum
Takeoff Weight. Use the lower between this V1 and VR obtained in
step b as the V1 for the actual Takeoff Weight.
REVISION 20
AIRPLANE
OPERATIONS
MANUAL
SPEEDS FOR UNBALANCED
1-04-15
PERFORMANCE
EMB-145 A1 FAA
Page Code
1 02