777lover From United States of America, joined Mar 2001, 96 posts, RR: 0 Posted (11 years 4 months 1 week 9 hours ago) and read 2362 times:
I was just wondering how you started a CF34 engine in, say, a CRJ. I know in an A-10 (TF34, same engine) you slide the throttles back into a notch that is ahead of the off position. I was in a CRJ sim with a person I know who is knowledgable in starting TF34's and he was wondering how you started the CF34's. He thought it would be the same way because he could not find a start button in the CRJ sim.
M717 From United States of America, joined Dec 2002, 608 posts, RR: 4
Reply 3, posted (11 years 4 months 1 week 6 hours ago) and read 2306 times:
If you're going to give a smart-a$$ answer, at least be accurate. Most jet engines have a start switch which opens the start valve and introduces air into the engine to begin the N2 rotation (or N3 in the RB-211). This same start switch also energizes the ignition. Then the fuel switch is moved on to introduce the fuel. On many engines, this action of introducing fuel also activates the ignition (the start switch only energizes the igniters).
Many modern jet aircraft are equipped with FADECs. In this case, the start sequence is all automatic, and controlled by the FADECs.
None of this applies to the CF34s on a CRJ, as I know nothing about that engine or aircraft. Unlike others, I will not presume to tell you what to do when I don't know myself.
Jhooper From United States of America, joined Dec 2001, 6202 posts, RR: 12
Reply 6, posted (11 years 4 months 6 days 6 hours ago) and read 2199 times:
Thanks for correcting my faulty understanding of starting jet engines. I don't fly jets, so I wouldn't know the exact procedure. Then perhaps I should have refrained from posting; I apologize. But I do suggest that the checklist be followed; no smarta$$ness intended.
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