The design of a Ride Quality Augmentation System (RQAS) for commuter aircraft is documented. The RQAS is designed for a Cessna 402B, an 8 passenger prop twin representative to this class of aircraft. The purpose of the RQAS is the reduction of vertical and lateral accelerations of the aircraft due to atmospheric turbulence by the application of active control. The detailed design of the hardware (the aircraft modifications, the Ride Quality Instrumentation System (RQIS), and the required computer software) is examined. The aircraft modifications, consisting of the dedicated control surfaces and the hydraulic actuation system, were designed at Cessna Aircraft by Kansas University-Flight Research Laboratory. The instrumentation system, which consist of the sensor package, the flight computer, a Data Acquisition System, and the pilot and test engineer control panels, was designed by NASA-Langley. The overall system design and the design of the software, both for flight control algorithms and ground system checkout are detailed. The system performance is predicted from linear simulation results and from power spectral densities of the aircraft response to a Dryden gust. The results indicate that both accelerations are possible.


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    Title :

    Detailed design of a Ride Quality Augmentation System for commuter aircraft


    Contributors:

    Publication date :

    1989-05-01


    Type of media :

    Report


    Type of material :

    No indication


    Language :

    English





    Design of a digital ride quality augmentation system for commuter aircraft

    Hammond, T. A. / Amin, S. P. / Paduano, J. D. et al. | NTRS | 1984


    Design of a digital ride quality augmentation system for a commuter aircraft

    HAMMOND, T. / DOWNING, D. / AMIN, S. et al. | AIAA | 1984


    Design of a Digital Ride Quality Augmentation System for Commuter Aircraft

    T. A. Hammond / S. P. Amin / J. D. Paduano et al. | NTIS | 1984


    Ride quality systems for commuter aircraft

    Downing, D. R. / Hammond, T. A. / Amin, S. P. | NTRS | 1983