Airbus E-Fan

E-Fan
Airbus E-Fan in flight at 2014 Berlin Air Show
Role Electric aircraft
Manufacturer Airbus Group Innovations
Designer Didier Esteyne[1]
First flight 11 March 2014
Introduction 2017
Status Under development
Number built 1


The Airbus E-Fan is a prototype two-seater electric aircraft being developed by Airbus Group. It was flight demonstrated to the world press at the Farnborough Airshow in the UK in July 2014. The target market is pilot training.

Design and development

Airbus Group is developing an electric aircraft with Aero Composites Saintonge. The aircraft uses on-board lithium batteries to power the two electric motors and can carry one pilot and one passenger. A test flight was conducted in April 2014 at Mérignac Airport, France, landing in front of a large audience, the French Minister of Industry Arnaud Montebourg being one of them. At the 2014 Farnborough Airshow, Airbus announced that the E-Fan 2.0 will go into production by 2017 with a side-by-side seating layout.[2] Airbus has stated that there are plans for development of a commercial regional aircraft in the near future.[3][4]

The E-Fan is an all-electric two-seat twin-motor low-wing monoplane of composite material structure. It has a T-tail and a retractable tandem landing gear with outrigger wheels. The two motors are mounted on either side of the rear fuselage.

Two production variants are planned, a two-seater E-Fan 2.0 for use as a trainer, and the E-Fan 4.0 four-seater. The E-Fan 4.0 appears identical to the E-Fan apart from a fuselage stretch. To increase flight duration the E-Fan 4.0 will have a hybrid-electric system that will have a small engine to charge the battery (like a range extender), which will increase its duration from 2 hours to 3.5 hours. First flight of the E-Fan 2.0 is planned for 2017 and the E-Fan 4.0 should follow in 2019.[1]

A ducted fan on the E-Fan

The E-fan is of all-composite construction and is propelled by two ducted, variable-pitch fans spun by two electric motors totaling 60 kW of power. Ducting increases thrust while reducing noise, and having the fans mounted centrally provides better control. The motors moving the fans are powered by a series of 250-volt Lithium polymer battery packs made by South Korean company Kokam. The batteries are mounted in the inboard section of the wings. They have enough power for one hour and take one hour to recharge. An onboard backup battery is available to make an emergency landing if power runs out while airborne. The E-fan's landing gear consists of a retractable fore and aft wheel, and a fixed wheel under the wings. Unusually for an aircraft, the main wheel is powered by a 6 kW electric motor, which allows the plane to be taxied without the main motors, and is able to accelerate it to 60 km/h (37 mph; 32 kn) for takeoffs. Having the takeoff run performed by the undercarriage relieves some of the burden on the flight motors.[5]

In December 2014 Airbus announced that DAHER-SOCATA will complete the design work on the aircraft and certify it. VoltAir, an Airbus subsidiary, developed the initial prototype and will work with Daher-Socata during the testing phase as the project manager.[6] At this point the aircraft became the VoltAir E-Fan.[1]

On 30 April 2015 the company announced that the aircraft will be produced at Pau Pyrénées Airport, south-west France, at a new facility to be constructed in 2016, that will be near the DAHER-SOCATA plant at Tarbes. First deliveries are expected at the end of 2017 or early 2018.[7][8]

Operational history

On 9 July 2015, the E-Fan crossed the English Channel from Lydd Airport to Calais–Dunkerque Airport. It was flown by Didier Esteyne, the chief engineer of the E-Fan.[9] Initially this was claimed as the first electric aircraft to cross the English Channel, but it has since been pointed out that there were previous such flights, including MacCready Solar Challenger as long ago as 1981, and Airbus now say it was the "first all-electric two-engine aircraft" to make the crossing.[10][11][12][13] Siemens has sponsored electric equipment on the E-fan, but not motors.[14]

Variants

E-Fan
Two-seat concept aircraft ad technology demonstrator, first flown March 2014.[1][15]
E-Fan 2.0
Proposed all-electric two-seat production variant, to fly 2017.[1]
E-Fan 4.0
Proposed hybrid-electric four-seat variant, to fly 2019; a kerosene fuelled generator will extend endurance from 2 h to 3 h 30 min.[1]
E-Thrust
Proposed 90-seat regional jet based on the principles of the E-Fan.[15]

Specifications

Data from Jane's All the World's Aircraft 2014/15[16] and Airbus[17]

General characteristics

Performance

References

  1. 1 2 3 4 5 6 7 Gunston, Bill (2015). Jane's All the World's Aircraft  : development & production : 2015-16. IHS Global. pp. 410–11. ISBN 978-0-7106-3135-0.
  2. ↑ "Airbus commits to E-Fan Production". Retrieved 16 July 2014.
  3. ↑ O'Callaghan, Jonathan (2013-09-17). "Airbus unveils plans for battery-powered planes within the next 20 years". The daily Mail (online ed.). UK. Retrieved 2014-04-28.
  4. ↑ Bertorelli, Paul (2014-04-24). "Airbus Announces Electric Aircraft". Av Web. Retrieved 2014-04-28.
  5. ↑ "E-Fan electric aircraft makes first public flight", Giz mag, 30 April 2014.
  6. ↑ Kauh, Elaine (11 December 2014). "Daher-Socata To Develop Airbus E-Fan". AVweb. Retrieved 14 December 2014.
  7. ↑ "Airbus E-Fan To Be Built In Pau, France". AVweb. Retrieved 1 May 2015.
  8. ↑ "L'E-fan décollera de Pau". La Tribune (in French). 30 April 2015. Retrieved 4 May 2015.
  9. ↑ "CV - Didier Esteyne, pilot and designer of the E-Fan". airbusgroup.com. Retrieved 10 October 2016.
  10. ↑ "Electric Shock: Rival Pilots Claim Channel First". Sky News. Retrieved 10 July 2015.
  11. ↑ "Did Duwal Beat Airbus Across the Channel?". AVweb. Retrieved 10 July 2015.
  12. ↑ Bertorelli, Paul. "Airbus' Asterisked Record". AVweb. Retrieved 10 July 2015.
  13. ↑ "First Electric-Powered Channel Flight Was 34 Years Ago". AVweb. Retrieved 13 July 2015.
  14. ↑ Niles, Russ. "Pipistrel Cancels Channel Flight After Siemens Pulls Support". AVweb. Retrieved 2 August 2015.
  15. 1 2 Reed Business Information Limited. "Airbus light aircraft initiative blazes trail to electric future".
  16. ↑ Jackson, Paul A. (2014). Jane's All the World's Aircraft  : development & production : 2014-15. IHS Global. p. 335. ISBN 978-0-7106-3094-0.
  17. ↑ "E-Fan, the New Way to Fly". Airbus Group. Airbus Group. Retrieved 25 September 2015.

External links

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