BELL 429 fuel burn

[Agog]

Hello,

I'm looking for the single engine fuel burn for a Bell 429.

Thanks,

 

[helonorth]

I have no idea but I'm just wondering why anyone would want (or need) to know this?

[iChris]

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

[Bonzo828]

It's about 90 gal / hr and can be over 100 if your pulling the guts out....

[iChris]

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