NTRS - NASA Technical Reports Server

Back to Results
A model for rotorcraft flying qualities studiesThis paper outlines the development of a mathematical model that is expected to be useful for rotorcraft flying qualities research. A computer model is presented that can be applied to a range of different rotorcraft configurations. The algorithm computes vehicle trim and a linear state-space model of the aircraft. The trim algorithm uses non linear optimization theory to solve the nonlinear algebraic trim equations. The linear aircraft equations consist of an airframe model and a flight control system dynamic model. The airframe model includes coupled rotor and fuselage rigid body dynamics and aerodynamics. The aerodynamic model for the rotors utilizes blade element theory and a three state dynamic inflow model. Aerodynamics of the fuselage and fuselage empennages are included. The linear state-space description for the flight control system is developed using standard block diagram data.
Document ID
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Mittal, Manoj
(Georgia Inst. of Tech. Atlanta, GA, United States)
Costello, Mark F.
(Georgia Inst. of Tech. Atlanta, GA, United States)
Date Acquired
September 6, 2013
Publication Date
July 1, 1993
Publication Information
Publication: NASA. Ames Research Center, Piloting Vertical Flight Aircraft: A Conference on Flying Qualities and Human Factors
Subject Category
Aircraft Stability And Control
Accession Number
Distribution Limits
Work of the US Gov. Public Use Permitted.
No Preview Available