1. An aircraft with negative static stability can therefore be made more maneuverable. 2. Another role of a longitudinal stabilizer is to provide longitudinal static stability . 3. Digital fly-by-wire systems allow an aircraft to be designed with relaxed static stability . 4. :: M _ \ alpha Pitching moment due to incidence-the static stability term. 5. The relaxed static stability ( RSS ) was an ambitious requirement. 6. Potential temperature is a useful measure of the static stability of the unsaturated atmosphere. 7. Potential density is a dynamically important property : for static stability potential density must decrease upward. 8. Static stability requires this to be negative.9. A free-floating mechanism may increase static stability and provide safe recovery from high angle of attack evolutions. 10. At supersonic airspeed, a negatively stable aircraft can exhibit positive static stability due to aerodynamic center migration.