TM 55-1510-215-10
TORQUE AVAILABLE FOR TAKEOFF
TORQUE AVAILABLE
PROP SPEED = 2200 RPM
FOR TAKEOFF
FUEL JP-4 AIRSPEED = 0 KNOTS
U-21G
T74-CP-700
EXAMPLE
WANTED
TORQUE AVAILABLE
FOR TAKEOFF
NOTE
1.
TORQUE INCREASES APPROXIMATELY 15 FT-LB FROM ZERO TO 70 KNOTS.
2.
THIS CHART IS BASED ON AN ENGINE WITH MAXIMUM DETERIORATION OF
EXCESS TORQUE WHICH CAN BE PERMITTED WITHOUT EXCEEDING ENGINE
LIMITATIONS.
3.
TAKEOFF PERFORMANCE WAS DEVELOPED UTILIZING THE TORQUE
VALVES SHOWN.
R
G
AP 000570
DATA BASIS: CALCULATED FROM ENGINE MODEL SPEC.
Figure 7-9. Torque Available for Takeoff
7-21
