Honeywell HTF7000
The Honeywell HTF7000 is a turbofan engine produced by Honeywell Aerospace. Rated in the Template:Cvt range, the HTF7000 is used on the Bombardier Challenger 300/350, Gulfstream G280, Embraer Legacy 500/450 and the Cessna Citation Longitude. Its architecture could be extended for a range of Template:Cvt thrust.[1]
Operational history
The engine was originally designated the AS907, which was changed in 2004 to HTF7000; the AS907 designation is still used for legal and regulatory use.[2] By October 2016, 2.6 million hours had been logged by 1,400 in service engines and it has a 99.9% dispatch reliability rate. Average fuel consumption is about 950 lb. per hour for a 7,765 lbf engine on a G280, to be compared to 875 lb. per hour for a 4,420 lbf TFE731 on a G150.[1] More than 3.5 million flight hours have been logged till October 2017, and the 2,000th engine should be delivered in 2018.[3]
Honeywell maintenance program is $447 for two engines per hour.[4] Borescope inspections extends time between overhaul and some engines have remained installed for up to 10,000 hr.[1] It has line replaceable components installed with hand tools and is designed for condition-based maintenance.[3]
Variants
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- HTF5000 / AS905
- A Template:Cvt thrust variant,[2] unsuccessfully targeted toward the Dassault Falcon 7X.[5]
- HTF7000 / AS907-1-1A[6]
- Script error: No such module "convert". original variant of the engine. Developed for the Bombardier Challenger 300.
- AS977
- Higher thrust variant of the AS907, designed at the same time, intended to power BAE System's Avro RJX.[7] The aircraft was cancelled after three airframes were built and flown; subsequently this variant never entered production.
- HTF7250G / AS907-2-1G[6]
- Script error: No such module "convert". variant developed for use on the Gulfstream G280.[8]
- HTF7350 / AS907-2-1A[6]
- Script error: No such module "convert". Variant developed for use on the Bombardier Challenger 350.
- HTF7500E / AS907-3-1E[6]
- Script error: No such module "convert". variant developed for the Embraer Legacy 500/450 business jets[9] and the Praetor 500/600.[6]
- HTF7700L / AS907-2-1S[6]
- Script error: No such module "convert". for the Cessna Citation Longitude.[10]
- HTF10000
- A Template:Cvt nominal thrust variant.[11]
Applications
Specifications
Data from FAA.[12]
General characteristics
- Type: Turbofan
- Length: Script error: No such module "convert".[13]
- Diameter: Script error: No such module "convert". fan[14]
- Dry weight: Script error: No such module "convert".
Components
- Compressor: 22 internally reinforced blades fan,[1] 16:1 pressure ratio HP: four stage axial + one stage centrifugal[15]
- Combustors: Annular
- Turbine: Two stage HP turbine, three stage LP turbine
- Oil system: Pressure spray with scavenge and dry sumpScript error: No such module "Unsubst".
Performance
- Maximum thrust: Script error: No such module "convert".
- Cruise thrust: Template:Cvt[16]
- Overall pressure ratio: 28.2[14]
- Bypass ratio: 4.4:1[14]
- Fuel consumption: Script error: No such module "convert".[1]
- Specific fuel consumption: Static sea level: Template:Cvt;[17] Cruise: Template:Cvt[16]
- Power-to-weight ratio: 4.53 - 4.98
See also
Related development
Comparable engines
Related lists
References
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External links
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