Engines Flashcards
1
Q
What happens in the automatic engine start sequence?
A
Eng mode selector to IGN/START
Pack valves close
Eng master to ON LP fuel valve opens Engine start valve opens Ignition starts at CEO: N2>16% NEO: N2>20% HP fuel valve opens at CEO: N2>22% NEO N2>20%
At CEO: N2>50%, NEO: N2>63%
Engine start valve closes and ignition stops
Pack flow valves open again after 60s
