Analisis flutter pada uji model separuh sayap pesawat N219 di terowongan angin kecepatan rendah: The analysis of half wing flutter test N219 aircraft model in the low speed wind tunnel

The flutter phenomenon will occur when the aerodynamic force and moment excessively interacted on the wing surface, whether it takes place in the wind tunnel or on the real aircraft. The wing will vibrate and oscillate towards an unstable condition. Each oscillation will subsequently build a greater one until the damping and frequency on a certain speed range can be seen easily when flutter occur on the half wing model. On this research, the half wing model of N219 aircraft was tested in the low speed wind tunnel of BBTA3, Puspitek Serpong. The flutter speed occurred at 40.5 m/s based on computational analysis while the wind tunnel result is at the speed of 40.83 m/s.