Honeywell HTF7000
HTF7000 | |
---|---|
installed on a Bombardier Challenger 300 | |
Type | Turbofan |
National origin | United States |
Manufacturer | Honeywell Aerospace |
First run | 1999[1] |
Major applications | Bombardier Challenger 300/350 Gulfstream G280 Embraer Legacy 500/450 |
Number built | approaching the 2,000th[2] |
The Honeywell HTF7000 is a turbofan engine produced by Honeywell Aerospace. Rated in the 6,540–7,624 pounds-force (29.09–33.91 kN) range, the HTF7000 is used on the Bombardier Challenger 300/350, Gulfstream G280 and Embraer Legacy 500/450 and is planned for the new Cessna Citation Longitude. Its architecture could be extended for a range of 8,000 to 10,000 lbf thrust.[3]
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.[4] In October 2016, 2.6 million hours have 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.[3] More than 3.5 million flight hours have been logged till October 2017, and the 2,000th engine should be delivered in 2018.[2]
Honeywell maintenance program is $447 for two engines per hour.[5] Borescope inspections extends time between overhaul and some engines have remained installed for up to 10,000 hr.[3] It has line replaceable components installed with hand tools and is designed for on-condition maintenance.[2]
Variants
- HTF7000 / AS907
- 6,826 lbf (30.36 kN) 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.[6] The aircraft was cancelled after 3 airframes were built and flown and subsequently this engine variant never entered full production.
- HTF7250G
- 7,624 lbf (33.91 kN) variant developed for use on the Gulfstream G280[7]
- HTF7350
- 7,323 lbf (32.57 kN) Variant developed for use on the Bombardier Challenger 350.
- HTF7500E
- 6,540–7,036 lbf (29.09–31.30 kN) variant developed for the Embraer Legacy 500/450 business jets.[8]
- HTF7700L
- 7,550 lbf (33.6 kN) for the Cessna Citation Longitude[9]
Applications
Specifications
Data from FAA[10]
General characteristics
- Type: Turbofan
- Length: 92.4 in (234.7 cm)[11]
- Diameter: 34.2 in (87 cm) Fan[12]
- Dry weight: 1,514–1,534 lb (687–696 kg)
Components
- Compressor: 21 internally reinforced blades fan,[3] 16:1 compression ratio HP: four stage axial + one stage centrifugal[13]
- Combustors: annular combustor
- Turbine: two stage HP turbine, three stage LP turbine
- Oil system: pressure spray with scavenge and dry sump
Performance
- Maximum thrust: 6,944–7,638 lbf (30.89–33.98 kN)
- Overall pressure ratio: 28.2[12]
- Bypass ratio: 4.4[12]
- Fuel consumption: 950 lb. per hour[3]
- Thrust-to-weight ratio: 4.53 - 4.98
See also
Related development
Comparable engines
Related lists
References
- ↑ "AlliedSignal powers up AS900 turbofan". Flight Global. 18 August 1999.
- 1 2 3 "Honeywell Engine Receives Certification for Textron Aviation's Cessna Citation Longitude" (Press release). Honeywell. October 5, 2017.
- 1 2 3 4 5 David Esler (Oct 27, 2016). "Honeywell's Super-Midsize HTF7000 Engine". Business & Commercial Aviation. Aviation Week.
- ↑ "Honeywell gives AS907 turbofan redesignation". Flight International. 13 January 2004.
- ↑ Fred George (Nov 1, 2014). "Pilot Report: Bombardier Challenger 350". Business & Commercial Aviation. Aviation Week.
- ↑ Paul Lowe (April 23, 2008). "Honeywell's AS907 gets nod, production begins". Aviation International News.
- ↑ "G280 Specifications" (PDF). Gulfstream. 2015.
- ↑ Guy Norris (24 May 2010). "Embraer's Legacy 450/500 Engine Enters Test At Honeywell". Aviation Week & Space Technology.
- ↑ "Cessna showcases new Citation Longitude at NBAA 2015; announces large cabin Citation Hemisphere" (Press release). Textron Aviation. 16 November 2015.
- ↑ "AS907 Type Certificate Data Sheet, Revision 7" (PDF). FAA. 22 March 2016.
- ↑ "Honeywell HTF7000". Flug Revue. 18 April 2013.
- 1 2 3 "NBAA 2006: Engine giants power up for growth". Flight Global. 17 October 2006.
- ↑ Fred George (Feb 25, 2016). "Honeywell HTF7700L Turbofans". Business & Commercial Aviation. Aviation Week.
External links
- "HTF7000 Turbofan Engine". Honeywell.
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