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MTU/Pratt & Whitney RTF-180

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The MTU/Pratt & Whitney RTF-180 was a planned turbofan aircraft engine that was to be jointly developed by Motoren-und Turbinen Union (MTU) and Pratt & Whitney in the early 1990s. It was to be the first civil engine program where MTU would be the prime contractor.[1] The name of the engine, RTF-180, combined the initials for "Regional TurboFan" with the engine's nominal thrust of 18,000 pounds-force (80 kilonewtons).[2]: 6 

A November 1990 internal briefing showed that the RTF-180 was one of the engines on offer for the 90-115 seat MPC 75, a regional airliner requiring 14,000–18,000 lbf (62–80 kN) of static thrust.[3]: M75.C.3005.A, M75.C.3008.B  In March 1991, the RTF-180 engine was proposed as a possible powerplant for an 80-130 seat airliner from a consortium of Germany's Deutsche Aerospace (DASA), France's Aérospatiale, and Italy's Alenia.[4] The design of the RTF-180 for that airliner initially included a 137-centimeter diameter (54-inch) fan, three-stage low-pressure compressor, eight-stage high-pressure compressor, one-stage high-pressure turbine, and four-stage low-pressure turbine.[5]

At the 1993 Paris Air Show, MTU and Pratt & Whitney announced that they would abandon the RTF-180 in favor of a joint project with General Electric and SNECMA.[6]

Specifications

Data from Regioliner R92 aircraft definition note, 22 July 1992, pages 4–10, 4–11, and 4–14[7]

General characteristics

  • Type: 2-spool turbofan
  • Length: 4,132 mm (163 in)
  • Fan diameter: 1.3 m (52 in)
  • Diameter:
  • Dry weight:

Components

  • Compressor: 6-stage high-pressure (HP) compressor, 2-stage transonic low-pressure (LP) compressor
  • Combustors: Annular double-dome combustion chamber
  • Turbine: 1-stage cooled HP turbine, 3-stage LP turbine

Performance

  • Maximum thrust: 62–89 kN (6,400–9,100 kgf; 14,000–20,000 lbf)
  • Bypass ratio: 5.0
  • Specific fuel consumption: Cruise at Mach 0.77 (822 km/h; 511 mph), altitude 11,000 m (35,000 ft): 18.4 g/(kN⋅s) (0.648 lb/(lbf⋅h))

References

  1. ^ MTU's engine projects. West Europe: Aerospace. Science & Technology: Europe (Report). JPRS Report. Vol. JPRS-EST-92-028. Foreign Broadcast Information Service (published 17 September 1992). June 1992. pp. 19–20. {{cite report}}: Unknown parameter |agency= ignored (help)
  2. ^ Heckmann, Erhard (June 1992). Germany's aerospace industry's problems, progress. West Europe. Science & Technology: Europe: Recent developments in European aerospace (Report). JPRS Report. Vol. JPRS-EST-92-033. Translated by Foreign Broadcast Information Service (published 30 October 1992). pp. 3–6. {{cite report}}: Unknown parameter |agency= ignored (help)
  3. ^ MPC Aircraft (November 1990). MPC-75 briefing (PDF) (Report).
  4. ^ Sedbon, Gilbert; Moxon, Julian (13–19 March 1991). "DASA lands regional-jet deal" (PDF). Headlines. Flight International. p. 5. ISSN 0015-3710. Archived from the original (PDF) on 11 February 2015.
  5. ^ Norris, Guy (27 March – 2 April 1991). "RTF180 viewed for regional jet as MTU reveals engine details" (PDF). Technical: Air Transport. Flight International. p. 19. ISSN 0015-3710. Archived from the original (PDF) on 7 November 2012.
  6. ^ Betts, Paul (12–13 June 1993). "Pratt and Whitney joins GE to develop smaller jet engines". Financial Times. No. 32086. Paris, France. p. 1. ISSN 0307-1766.
  7. ^ Deutsche Airbus GmbH (22 July 1992). Regioliner R92 aircraft definition note (PDF) (Report). Hamburg, Germany. pp. 4–10, 4–11, 4–14.

Bibliography

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