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HF120
Type	Turbofan
National origin	Japan/United States
Manufacturer	GE Honda Aero Engines
First run	2009
Major applications	Honda HA-420 HondaJet

The GE Honda HF120 is a small turbofan for the light business jet market, the first engine to be produced by GE Honda Aero Engines.

Development

Succeeding Honda's original HF118 prototype, the HF120 was undergoing testing in July 2008, with certification targeted for late 2009. The first engines were produced at GE's factory, but in November 2014 production shifted to Burlington, North Carolina. The U.S. Federal Aviation Administration (FAA) awarded Part 33 certification to the HF120 turbofan engine in December 2013, and production certification in 2015.

Design

The engine has a wide-chord swept fan, two-stage low-pressure compressor and counter rotating high-pressure compressor based on a titanium impeller, for a 2,050 lbf (9.1 kN) takeoff thrust. The HF120 engine's components interact with greater efficiency by incorporating 3D aerodynamic design, and its effusion-cooled combustor design emits low NOx, CO and HC. Noise levels are quieter than Stage 4 requirements.

In May 2016 time between overhaul was 2,500 h, which was expected to mature to 5,000 h; a midlife hot-section inspection is not required, and it is expected to remain on wing 40% longer than other engines and have lower operating costs.

Operational history

Besides the HondaJet, HF120 was announced as a retrofit to the Cessna CitationJet CJ1 by Sierra Industries, in partnership with GE Honda.

In addition, Spectrum Aeronautical has announced it is planning to use HF120 for its upcoming S-40 Freedom.

Applications

• Honda HA-420 HondaJet
• Spectrum S-40 Freedom

Specifications

Data from Honda

General characteristics

• Type: Turbofan engine
• Length: 59.5 in (151 cm) (end-to-end)
• Diameter: 25.8 in (66 cm)
• Dry weight: 211.3 kg (466 lb) with basic accessories and optional equipment

Components

• Compressor: One wide-chord fan, two axial LP stages, one centrifugal HP stage.
• Combustors: Compact reverse flow annular
• Turbine: One axial HP stage (48,777 rpm), two axial LP stages (19,055 rpm).

Performance

• Maximum thrust: 2,050 lbf (9.1 kN) (Takeoff)
• Overall pressure ratio: 24:1
• Bypass ratio: 2.9:1
• Turbine inlet temperature: 1,580 °F (860 °C) (Takeoff)
• Specific fuel consumption: <0.7 lb/lbf/h (71 kg/kN/h)
• Thrust-to-weight ratio: 4.4

See also

Related lists

• List of aircraft engines

References

1. "GE Honda's HF120 Engine Completes First Run Test" (Press release). GE Aviation. October 19, 2009. Archived from the original on January 7, 2017. Retrieved June 30, 2016.
2. "Engine Prototyping prepares GE Honda Aero Engines for certification tests" (Press release). GE Aviation Press Release. July 28, 2008.
3. Curt Epstein (12 November 2014). "GE Honda Transitions HF120 Production to N. Carolina". Aviation International News.
4. Chad Trautvetter (18 March 2015). "GE Honda Wins FAA Production Certificate for HF120 Engine". Aviation International News.
5. "GE Honda Aero Engines". Flight International. Archived from the original on August 11, 2011.{{cite web}}: CS1 maint: unfit URL (link)
6. "HF120 Engine". GE Honda Aero Engines.
7. Fred George (May 26, 2016). "GE Honda HF120-H1A Turbofans". Business & Commercial Aviation. Aviation Week.
8. Chad Trautvetter (18 September 2014). "Sierra Selects GE Honda HF120 for Sapphire CitationJet Upgrade Program". Aviation International News.
9. Dan Parsons (20 October 2014), "GE Honda launches Cessna jet engine retrofit programme", Flightglobal
10. "The Spectrum Freedom S.40 Overview".
11. "HF120 Turbofan Engine". Honda Worldwide. Retrieved September 29, 2017.
12. "TCDS No.: IM.E.054" (PDF). EASA. 20 April 2016. Archived from the original (PDF) on 18 January 2021. Retrieved 1 June 2018.

External links

Official website

• Medium-bypass turbofan engines
• Honda engines
• 2000s turbofan engines
• Centrifugal-flow turbojet engines