PPRuNe Forums - View Single Post - Agusta AW139
Thread: Agusta AW139
View Single Post
Old 18th Apr 2018, 20:56
  #1842 (permalink)  
[email protected]
 
Join Date: Apr 2000
Location: EGDC
Posts: 10,333
Received 630 Likes on 272 Posts
Geoffers - I assume the OEI backs off the Nf of the 'failed' engine just enough that the Nr can be drooped with the 'good' engine for realistic profiles for Cat A.

At some point that drooping Nr would meet the backed off Nf and the 'failed' engine would start to pick up the drive as well.

Is it likely then, with a big pull (cocked up profile) the TQ LIM is there so that the combined Tq of both engines ('good' one very high and 'failed' one increasing) can't exceed 228% and the fact that AEO operation with TQ LIM on just happens to limit at 114% matched because 228% is the TOTAL Tq that the gearbox needs protection from?
crab@SAAvn.co.uk is offline