Linear Modeling of Tiltrotor Aircraft (in Helicopter and Airplane Modes) for Stability Analysis and Preliminary Design

This thesis investigates the linear state space modeling of a tiltrotor aircraft by modifying an existing MATLAB routine which is used for preliminary (helicopter) stability and control analysis. The modifications consist of changing existing script files along with adding new ones. The modifications result in having a routine that allows the input of tiltrotor characteristics and subsequently generates a state space model along with other stability and control characteristics. The tiltrotor modeling is validated by the input of XV-15 characteristic data into the program and performing a eigenvalue comparison with a model of a similar tiltrotor, the V-22. A more extensive comparison is performed with another XV-15 model which has been extensively used and validated with wind tunnel and flight tests.Naval Postgraduate School Monterey CA is the author of 'Linear Modeling of Tiltrotor Aircraft (in Helicopter and Airplane Modes) for Stability Analysis and Preliminary Design', published 1996 under ISBN 9781423581000 and ISBN 1423581008.