TM 1-1520-238-10
7-72
Section VII. CLIMB-DESCENT
7.25 DESCRIPTION
The climb descent chart (fig 7-19) shows the change in
torque (above and below the torque required for level
flight under the same configuration, gross weight, and at-
mospheric conditions) to obtain a desired rate of climb or
descent.
7.26 USE OF CHART.
The primary use of the chart is illustrated by the example.
To determine the change in torque, it is necessary to know
the gross weight and the desired rate of climb or descent.
Enter the chart at the desired rate of climb or descent,
move right to the known gross weight, and then move
down and read the torque change. This torque change
must be added to (for climb) or subtracted from (for de-
scent) the torque required for level flight (obtained from
the appropriate cruise chart) to obtain a total climb or de-
scent torque.
By entering the chart with a known torque change, and
moving up to the known gross weight and then left, the
corresponding rate of climb or descent can also be ob-
tained.
7.27 CONDITIONS.
The climb-descent chart is based on 100% rotor rpm.
