Aerodynamic Nose Optimization of a Jet Trainer Aircraft
Ömer Kandemir, Fazil Selcuk Gomec · AIAA AVIATION 2020 FORUM · 2020
The nose geometry of an aircraft influences the characteristics of performance, stability and post stall aerodynamics. This paper studies the nose optimization process of a jet trainer in the aspects of wave drag, longitudinal pitch-up tendency and directional stability. The parametrization of the nose geometry is divided into two subsections including lateral and frontal cross sections. Two independent design spaces representing these cross sections are created and solved at definite flight conditions by a RANS flow solver. Artificial neural network models are created with the results of these analyses as aerodynamics data generator. The final geometry is optimized by a multi objective genetic algorithm.