Estimation of the Effect of Lift-drag Ratio caused by Relaxing Longitudinal Static Stability of a certain-type of Joined-Wing Aircraft

摘要

According to a given joined-wing aircraft, based on the DATCOM calculation data, under typical cruise and stable hover flight conditions, cases are considered with and without the relaxation of static stability technique. The actual lift-drag ratio of the joined-wing layout and conventional layout is compared and the difference is revealed. This proceeding analyses the reason, seeking the pattern, providing the foundation for the optimization of the overall program of the aircraft in the future.