PPRuNe Forums - View Single Post - Sikorsky S-76: Ask Nick Lappos
View Single Post
Old 2nd Mar 2012, 23:49
  #1187 (permalink)  
John Eacott
 
Join Date: Aug 1999
Location: Gold Coast, Australia
Age: 75
Posts: 4,380
Received 25 Likes on 15 Posts
C2,

We use 600lb/hr at 135kts for planning, but the OAT tends to be high in the NW. That's pulling 70%Tq in the cruise, which is generally about 95 - 96%N1.

Your fuel burn will vary with altitude and temp, I see about 570lb/hr at 7000ft, but the Vne reduction can easily outweigh the reduced burn when the OAT is still >20C at 7000!

Part 2 Section V for the C30 had a comprehensive set of fuel flow charts, but I've not seen anything similar for the Arriel, unfortunately.
John Eacott is offline