70-ENG

Question 1

Max EGT?

Answer 1

Takeoff 900 (330: 975)
MCT 850 (330: 940)
Start on ground 700 (330: 750)
Start in flight: 850 (a 330: 975)

Question 2

oil temp?

Answer 2

Max temp 180 (330:160)
Min temp for start -40
Min temp for takeoff 50

Question 3

Oil pr?

Answer 3

> 25psi, whatever the N (330: 10 idling, 25 in flight)

Question 4

Oil qty?

Answer 4

> 13qt (330: >12 + consumption)

Le carter fait 21qt

Question 5

How many compressors and turbine discs per spool?

Answer 5

N1 : fan (referred to as the LP rotor) & 6 turb discs
N2: 8 compressors (IP rotor) & 2 turb discs
N3: 6 compressors (HP rotor) & 1 turb disc

Question 6

Bleed stages?

Answer 6

IP8 for the IPV (& eng stability)

HP3 for the press regulating shutoff valve (& eng stability)
HP6 for the HPV

Question 7

Start sequence ?

Answer 7

N3>25 & N2>8 -> igniter+fuel.
N3>48% -> start valve closes, igniter off.
Idle values : xxxx (to be filled)

Question 8

Starter limitations?

Answer 8

5’ continuous.
or
cycles as follow : 3’-3’-1’ (w/ a 30’’ break in between)

Cooling period 30’