TM 1-1520-240-10
7-3-1
SECTION III. MAXIMUM TORQUE AVAILABLE
7-3-1. Maximum Torque Available (10 Minute
Operation).
Maximum torque available (10 minute operation) may be
obtained from figure 7-3-1. Available torque is presented
in terms of pressure altitude and free air temperature.
7-3-2. USE OF CHART.
The primary use of the chart is to determine available
engine torque for various combinations of pressure alti-
tude and temperature. To determine torque available, it
is necessary to know pressure altitude and free air tem-
perature. Enter the left side of the chart at known temper-
ature, move right to known pressure altitude, then down
to read torque available.
7-3-3. Conditions.
The chart is based on a rotor speed of 100%.
Reduce the derived torque available by 1.8% however
not at transmission torque limit.
7-3-4. Maximum Torque Available (30 Minute
Operation).
Maximum Torque Available (30 Minute Operation)
may be obtained from figure 7-3-2. Available torque
is presented in terms of PA and FAT.
7-3-5. Use of Chart.
The primary use of the chart is to determine available
engine torque for various combinations of pressure alti-
tude and temperature. To determine torque available, it
is necessary to know pressure altitude and free air tem-
perature. Enter the left side of the chart at known temper-
ature, move right to known pressure altitude, then down
to read intermediate torque available.
7-3-6. Conditions.
The chart is based on a rotor speed of 100%.
7-3-7. EAPS Installed.
Reduce the derived torque available by 1.8% however
not at transmission torque limit.
