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Refer to figure or CAP Figure 2.19.
Given the following information, determine the rate of climb of a helicopter climbing with an airspeed of 41 kt:

Mass: 1800 lb
Pressure altitude: 9000 ft

  • A

    640 fpm

  • B

    560 fpm

  • C

    600 fpm

  • D

    580 fpm

Refer to figure.
To determine the Rate of Climb, proceed with the following manner:

  • Enter with the Pressure altitude of 9000 ft from the left.
  • Move horizontally to the right to intersect the Gross mass 1800 lb (in the middle of 1700 lb and 1900 lb mass lines).
  • Continue vertically down and read the Rate of Climb: 600 ft/min.

NOTE:

The rate of climb is a vertical line, thus constant, for each mass up to the engine critical altitude 4200 ft.

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