Chapter 6 - Engine Indicating

Question 1

What does the engine indicating system provide?

Answer 1

It provides the crew with the required data for engine condition trend monitoring and performance checks on the ground, and indications concerning the engine parameters during flight

Question 2

How are the gas gen and power turbine speed monitored?

Answer 2

By magnetic pick-up sensors installed on the engine

Question 3

What does the torque-meter oil pressure transmitter provide?

Answer 3

Torque indication

Question 4

What does the ITT provide?

Answer 4

An indication of the gas temp through four double thermocouples

Question 5

What 5 parameters are shown on the MFD?

Answer 5

ITT   P
NG   P
Oil Press   S
Oil Temp   S
TQ   P

Question 6

What 3 parameters are show on the PFD?

Answer 6

Power index
NR
NF

Question 7

How many thermocouples (type K) are there, where are they located?

Answer 7

There are 4 double thermocouples located in the turbine inner duct plane (connected to the T4.5 junction box)

Question 8

Where do the 2 exhaust gas temp raw signals go?

Answer 8

CHS VMM

EECU

Question 9

What does the T4.5 confirmation box do?

Answer 9

The confirrmation is calibrated to each individual engine and must stay with that one. The confirmation calculates what the T4 is for the specific engine as i gets the T4 is too hot 1200 to get a measurement from

Question 10

What does the torque indication system indicate?

Answer 10

The torque of the engine output shaft via a torque meter oil pressure transmitter

Question 11

Where is the torque confirmation box matched?

Answer 11

Mod 1

Question 12

what type is the NR seed sensor and where is it located?

Answer 12

Transmission lower casing. Triple coil magnetic speed sensor.
Gives 3 frequency outputs of RPM to the EECU and VMM