Agog 1 Report post Posted January 23 Hello, I'm looking for the single engine fuel burn for a Bell 429. Thanks, Quote Share this post Link to post Share on other sites
helonorth 214 Report post Posted January 25 I have no idea but I'm just wondering why anyone would want (or need) to know this? Quote Share this post Link to post Share on other sites
iChris 496 Report post Posted January 29 (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 by iChris Quote Share this post Link to post Share on other sites
Bonzo828 13 Report post Posted January 29 It's about 90 gal / hr and can be over 100 if your pulling the guts out.... Quote Share this post Link to post Share on other sites
iChris 496 Report post Posted January 30 (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 by iChris Quote Share this post Link to post Share on other sites
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