VFW-Fokker 614

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The VFW-Fokker 614 (also VFW 614) was a twin-engined jetliner designed and built in West Germany. It was produced in small numbers by VFW-Fokker in the early- to mid-1970s. It was originally intended as a DC-3 replacement. Its most distinctive feature was that its engines were mounted in pods on pylons above the wing.

Design and development

The VFW 614 was originally proposed in 1961 by the Entwicklungsring Nord (ERNO) group, comprising Focke-Wulf, Hamburger Flugzeugbau (HFB) and Weser as the E.614, a 36-40 seat aircraft powered by two Lycoming PLF1B-2 turbofans. West German industry was subsequently reorganised and Vereinigte Flugtechnische Werke (VFW) was established at Bremen. Development of what was now the VFW 614 continued.[1]

Although Lycoming abandoned the PLF1, development continued using the Rolls-Royce/SNECMA M45H turbofan, which was developed specially for the VFW 614. In 1968, the project was given the go-ahead,[2] with 80 percent of the backing from the West German Government. Full scale production was approved in 1970, by which time VFW had merged with Fokker (a somewhat unhappy arrangement which lasted for only ten years). Also risk sharing agreements had been concluded with SIAT in Germany, Fairey and SABCA in Belgium and Shorts in the UK. Final assembly of the aircraft would be done in Bremen.

Overwing pylon-mounted Rolls Royce powerplant

The first of three prototypes flew on July 14, 1971.[3] The aircraft was revealed to be of unconventional configuration, with two quiet, smoke-free, but untested M45H turbofans mounted on pylons above the wings. This arrangement was used to avoid the structural weight penalties of rear mounted engines and the potential ingestion problems of engines mounted under the wings. This allowed a short and sturdy undercarriage, specially suited for operations from poorly prepared runways.

Development of the aircraft was protracted and orders slow to materialise, despite a strong marketing campaign. The situation was not helped by Rolls-Royce's bankruptcy in 1971 which threatened the supply of engines.[4] Also, the first prototype was lost on 1 February 1972 due to elevator flutter,[5] worsening the order situation. By February 1975 only ten aircraft had been ordered. The first production VFW-614 flew in April 1975 and was delivered to Denmark's Cimber Air four months later.[5]

Operational history

Only three airlines and the Luftwaffe operated new VFW 614s.[6] The aircraft was initially prone to engine problems, and it was too expensive for the small regional airlines for whose needs it was designed.[7] Three aircraft were flown but never delivered, and four airframes were broken up before completion. The programme was officially cancelled in 1977, and the last unsold aircraft flew in July 1978. Most aircraft had been disposed of by 1981, with the manufacturer buying back the aircraft and simultaneously ending support of it.[citation needed] Thereafter, only the Luftwaffe aircraft remained in service, the last being retired in 1999. The last airworthy VFW 614 was in use with DLR for the Advanced Technologies Testing Aircraft System (ATTAS) project. After being based with DLR in Braunschweig, Germany for many years, this aircraft (registered D-ADAM) was retired in December, 2012 to the Deutsches Museum Flugwerft in Oberschleissheim, Germany.

Operators

VFW 614 Cimber Air
 Denmark
  • Cimber Air received two aircraft.
 France
  • Air Alsace bought three aircraft.
  • Touraine Air Transport was main operator with eight aircraft.
 West Germany

Specifications (VFW 614)

VFW 614
German Aerospace Center (DLR), ATTS

Data from The Observer's Book of Aircraft, 1976.[8]

General characteristics

  • Crew: Two
  • Capacity: 40-44 passengers in 4 abreast seating
  • Length: 20.60 m (67 ft 7 in)
  • Wingspan: 21.50 m (70 ft 6.5 in)
  • Height: 7.82 m (25 ft 8 in)
  • Wing area: 64.0 m² (689 ft²)
  • Empty weight: 12,179 kg (26,850 lb)
  • Max. takeoff weight: 19,958 kg (44,000 lb)
  • Powerplant: 2 × Rolls-Royce/Snecma M45H Mk. 501 turbofan, 33.2kN (7,473 lbf) each

Performance

  • Maximum speed: 704 km/h (380 knots, 437 mph)
  • Cruise speed: 722 km/h (449 mph)
  • Range: 1,195 km (645 nm, 743 mi)with 40 passengers
  • Service ceiling: 7,620 m (25,000 ft)
  • Rate of climb: 945 m/min (3,100 ft/min)

See also


Related lists

References

Notes

  1. ↑ Mellberg 1995, pp. 94–95.
  2. ↑ Mellberg 1995, p. 95.
  3. ↑ Mellberg 1995, pp. 95, 98.
  4. ↑ F27 Friendship Association - VFW 614 History
  5. ↑ 5.0 5.1 Mellberg 1995, p. 98.
  6. ↑ Jackson, 1976. p. 62.
  7. ↑ Mellberg 1995, pp. 98–99.
  8. ↑ Green 1976, p. 214.

Bibliography

  • Green, William. The Observer's Book of Aircraft. London. Frederick Warne & Co. Ltd., 1976. ISBN 0-7232-1553-7.
  • Jackson, Paul A. German Military Aviation 1956-1976. Hinckley, Leicestershire, UK: Midland Counties Publications, 1976. ISBN 0-904597-03-2.
  • Mellberg, Bill. "VFW 614:Ahead of its Time". Air International, February 1995, Vol 48 No 2. Stamford, UK:Key Publishing. ISSN 0306-5634. pp. 94–99.

External links

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