A new generation of fuel-efficient turboprop propulsion systems is under consideration now that fuel is a significant portion of the direct operating cost of aircraft. System in the 5000- to 15,000-hp (3730- to 11,185-kW) range that use conventional propellers or the new propfan are being studied. Reduction gearing for this next generation of turboprops is of significant interest due to new requirements for cruise speed life, and reliability. Detroit Diesel Allison's past experience with the T56 family of turboprop reduction gearboxes is recounted. Probable requirements of the next generation of reduction gearboxes are discussed since new requirements for gearboxes combined with past experience should determine the profile of the next generation of gearboxes. A discussion of gearbox general arrangement and its impact on airframe installation is incuded, along with comments on reduction ratio, gear arrangement, accessory drives, reliability goals, and probable technology needs. (Wassmann)
Next generation turboprop gearboxes
Die naechste Generation von Turbopropgetrieben
ASME-Papers ; 1-9
1982
9 Seiten, 15 Bilder, 4 Tabellen, 7 Quellen
Aufsatz (Konferenz)
Englisch
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