The static margin (SM) is given by:
An aircraft has a lateral stability derivative of -0.1 and a directional stability derivative of -0.2. Determine the aircraft's lateral and directional stability. Flight Stability And Automatic Control Nelson Solutions
where m is the pitching moment and α is the angle of attack. The static margin (SM) is given by: An
where l is the rolling moment and β is the sideslip angle. the following condition must be satisfied:
where n is the yawing moment.
For longitudinal stability, the following condition must be satisfied:
For lateral stability, the following condition must be satisfied: