Variable-speed simulation of a dual-clutch gearbox tiltrotor driveline

Hans DeSmidt, Edward C. Smith, Kon Well Wang, David G. Lewicki

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Scopus citations


This investigation explores the variable-speed operation and shift response of a prototypical two-speed dual-clutch transmission tiltrotor driveline in forward flight. Here, a Comprehensive Variable-Speed Rotorcraft Propulsion System Modeling (CVSRPM) tool developed under a NASA funded NRA program is utilized to simulate the drive system dynamics. In this study, a sequential shifting control strategy is analyzed under a steady forward cruise condition. This investigation attempts to build upon previous variable-speed rotorcraft propulsion studies by 1) including a fully nonlinear transient gas-turbine engine model, 2) including clutch stick-slip friction effects, 3) including shaft flexibility, 4) incorporating a basic flight dynamics model to account for interactions with the flight control system. Through exploring the interactions between the various sub-systems, this analysis provides important insights into the continuing development of variable-speed rotorcraft propulsion systems.

Original languageEnglish (US)
Title of host publication67th American Helicopter Society International Annual Forum 2011
Number of pages19
StatePublished - 2011
Event67th American Helicopter Society International Annual Forum 2011 - Virginia Beach, VA, United States
Duration: May 3 2011May 5 2011

Publication series

NameAnnual Forum Proceedings - AHS International
ISSN (Print)1552-2938


Other67th American Helicopter Society International Annual Forum 2011
Country/TerritoryUnited States
CityVirginia Beach, VA

All Science Journal Classification (ASJC) codes

  • General Engineering


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