TOWARDS COMPUTATIONAL FLIGHT DYNAMICS OF A PASSENGER JET AIRCRAFT

摘要

This paper investigates the efficient generationof an aerodynamic database for flight simulationof a regional jet aircraft. A hierarchy of aerodynamicmodels is used, from semi–empiricalapproaches up to computational fluid dynamicsanalyses. The prediction tools are first validatedat both low and high speeds against wind tunnelmeasurements. To reduce the number andcosts of computational fluid dynamics calculations,Kriging interpolation is exploited to generatethe aerodynamic tables. Data fusion allowscombining different aerodynamic sourcesinto one single database that is more accuratethan each single database. The longitudinal andlateral handling qualities are first investigated forthe regional jet aircraft. Then, the impact of geometrychanges on the aircraft dynamic characteristicsis investigated. It is found that improvedaircraft characteristics could be achieved for relativelysmall changes relative to the baseline geometry.