Engines Flashcards
1
Q
max thrust time limit?
A
10 minutes
2
Q
TO/GA thrust time limit?
A
5 minutes
3
Q
starter limit cool down times?
A
after 1st attempt - 60 seconds
after 2nd attempt - 60 seconds
after 3rd attempt - 15 minutes
after 4th attempt - 30 minutes
4
Q
when will ATR activate? (3 things?)
A
- 20% diff in thrust
- lost comm with other FADEC
- actual failure (flameout)
5
Q
power source for FADEC?
A
PMA permanent magnetic alternator
6
Q
what is hung start?
A
need 60 seconds to get to ground idle … if you don’t get 3/4/5 … you have hung start
you did NOT get: 3/4/5
- 30% n1
- 400 deg ITT
- 55% n2 speed
7
Q
how long before ITT rise on start?
A
within 10 seconds
8
Q
max thrust N2, N1 limits?
A
101, 100 (%)
9
Q
take off thrust N2, N1 limits?
A
101, 100 (%)
10
Q
typical OEI N1 setting?
A
60 to 65 (%)
