Agog Posted January 23, 2020 Report Share Posted January 23, 2020 Hello, I'm looking for the single engine fuel burn for a Bell 429. Thanks, Quote Link to comment Share on other sites More sharing options...
helonorth Posted January 25, 2020 Report Share Posted January 25, 2020 I have no idea but I'm just wondering why anyone would want (or need) to know this? Quote Link to comment Share on other sites More sharing options...
iChris Posted January 29, 2020 Report Share Posted January 29, 2020 (edited) On 1/23/2020 at 12:13 AM, Agog said: Hello, I'm looking for the single engine fuel burn for a Bell 429. Thanks, There’s a typical 0.5 - 0.8 Ibs/hp/hr specific fuel consumption (SFC) index for modern turbine engines. Light helicopter turbines, 0.5 is a good average The Bell 429’s one engine inoperative (OEI) 30 minutes hp = 550 SHP. So your OEI would average around: 40gal/hr. @550 SHP (jetA est. 6.8lbs/gal) Edited January 29, 2020 by iChris Quote Link to comment Share on other sites More sharing options...
Bonzo828 Posted January 29, 2020 Report Share Posted January 29, 2020 It's about 90 gal / hr and can be over 100 if your pulling the guts out.... Quote Link to comment Share on other sites More sharing options...
iChris Posted January 30, 2020 Report Share Posted January 30, 2020 (edited) On 1/23/2020 at 12:13 AM, Agog said: Hello, I'm looking for the single engine fuel burn for a Bell 429. Thanks, 22 hours ago, Bonzo828 said: It's about 90 gal / hr and can be over 100 if your pulling the guts out.... The 90gal/hr is a bit high for single engine operation. However, that's in the range with both engines online, 0.5 - 0.6 (80 - 97 gal/hr ) in terms of efficiency, you're looking for < 0.7 SHP(takeoff) = 1100 (0.5 * SHP)/6.8 = 80gal/hr (0.6 * SHP)/6.8 = 97gal/hr Edited January 30, 2020 by iChris Quote Link to comment Share on other sites More sharing options...
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