General Electric F414

The General Electric F414 is a turbofan engine with afterburner of GE Aviation in the class of about 98 kN thrust which is primarily used in the F/A-18E/F Super Hornet.

More than 1,000 F414 engines completed by 2010 over a million flight hours.

History

Background

The development of the F414 turbofan goes back to the unrealized version of the F404 for the A -12 Avenger II, the F412 -GE- 400 non-afterburning. After the A-12 was canceled, was looking for the U.S. Navy, an engine for the F/A-18E/F Super Hornet. General Electric offered now successfully the F414 to which had as a derivative of the F404 potentially lower development costs than a completely new engine. The new engine was dispensed with new materials and maintained the manufacturing processes of the F404, where the dimensions of both engines are the same.

Construction

The F414 uses the core and the FADEC system of the F412, the low-pressure systems, however, came from the YF120 engine of the ATF program. One of the primary differences between the F414 and F404, the fan this is the greater than the F414 F404, but smaller than the F412. The fan is 13 cm long and has a 16 % higher airflow on. To change the length of the F404, however, had to be reduced accordingly the combustion chamber and the afterburner. Another change from the F404 is that the first stages of the high -pressure compressor are designed as a " blisk ", whereby 23 kg could be saved in weight. Moreover, it was waived for the afterburner on a separate hydraulic system.

Developments

Has been put into service since the F414 on the Super Hornet, numerous programs were launched for development. 2006 General Electric tested an "Enhanced Durability Engine" ( EDE ) with an alternative core. The EDE - engine either could the thrust increased by 15 %, or the lifetime can be improved. Instead the seven EDE engine using a six stage high-pressure compressor, which is effective to 3%, and an improved high-pressure turbine, wherein the new materials used for the first time. They allow an increase in temperature to 66 ° C, which in turn allows a change in the supply of cooling air. The EDE has a better FOD protection and consumes less fuel.

After the EDE program test were performed with improved two stages blisk fans. Even if the first improved fan has been prepared by conventional methods, they should be tested with this new production methods in order to reduce production costs. These so-called "Enhanced Performance Engine " (EPE ) engines are part of the " Integrated High Performance Turbine Engine Technology" program ( IHPTET ) and have increased by 20 % thrust force.

Other possible improvements F414 deal with the possibility of reducing the noise. Since 2009, be under a development agreement, the U.S. Navy tests carried out with the F414 EDE engine to reduce the specific fuel consumption.

Variants

Technical data ( F414 -GE- 400)

F414 which consists of six modules which can be exchanged independently.

  • Length: 3,912 m
  • Diameter: 0.889 m
  • Inlet diameter: 0.79 m
  • Dry weight: about 1120 kg
  • Air flow: 77.1 kg / s
  • Compressor: Axial compressor designed with three low-pressure and high-pressure compressor stages seven, two, and three low - pressure stages as a blisk
  • Turbine: a low pressure and a high pressure stage
  • Thrust: 97.86 kN with maximum afterburner, 63.47 kN without
  • Overall pressure ratio: 30:1
  • Thrust -to-weight ratio: 9:1
Foreign Object Damage Supercruise KAI T-50 Golden Eagle HAL Tejas General Electric J85 General Electric F101 General Electric F110 Rolls-Royce Spey General Electric F118 Williams F121 General Electric F404 General Electric J47 General Electric J73 General Electric J79 Walter M601 General Electric T58 General Electric T64 General Electric T700
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