HP d212 Manual do Utilizador descarregar pdf (Página 114)

FMS-D212-725-1

Page 4-7

This document is private and confidential and is supplied on the express condition that it is not to be used for any

purpose or copied or communicated to any other person without written permission from Dart Aerospace Ltd.

Revision:

TC Approved Date: 13.08.09

4.3 Power Assurance Checks

4.3.1 Sample Problem (T53-17A Engine):

Stabilize the helicopter headed into the wind at a hover with De-ice OFF and

cabin heat OFF; the following is an example:

Example

Pressure altitude 4000 ft

Selected torquemeter pressure 35 PSI (63%)

Engine RPM (N

) adjust to 100%

Read and record the following values

Ambient air temperature 20°C

Exhaust gas temperature 575°C

Enter chart (Figure 4.2) at OAT (Point A). Proceed vertically to pressure

altitude (Point B). Proceed horizontally to torquemeter pressure (Point C).

Proceed vertically to OAT (Point D). Proceed horizontally to EGT (Point E)

Example:

Figure 4-2 Minimum Specification EGT – 585°C

Since the actual exhaust gas temperature (575°C) is not greater than the

charted exhaust gas temperature (585°C), the relation between power and

exhaust gas temperature is satisfactory.

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HP d212 Manual do Utilizador Página 114