An optimized rotorcraft propulsion system incorporating a foil air bearing supported Oil-Free engine coupled to a high power density gearbox using high viscosity gear oil is explored. Foil air bearings have adequate load capacity and temperature capability for the highspeed gas generator shaft of a rotorcraft engine. Managing the axial loads of the power turbine shaft (low speed spool) will likely require thrust load support from the gearbox through a suitable coupling or other design. Employing specially formulated, high viscosity gear oil for the transmission can yield significant improvements (approx. 2X) in allowable gear loading. Though a completely new propulsion system design is needed to implement such a system, improved performance is possible.
Oil-Free Rotor Support Technologies for an Optimized Helicopter Propulsion System
2007
14 pages
Report
Keine Angabe
Englisch
Oil-free rotor support technologies for an optimized helicopter propulsion system
Tema Archiv | 2007
|AIAA-2007-1145 OIL-FREE ROTOR SUPPORT TECHNOLOGIES FOR AN OPTIMIZED HELICOPTER PROPULSION SYSTEM
British Library Conference Proceedings | 2007
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