To provide an anti-icing device for a front edge part in an aircraft, configured to reliably and efficiently prevent icing at the front edge of the aircraft with a simple structure.
An anti-icing device 40 includes: an extraction air nozzle 41 where extraction air to be supplied to a main-wing front edge part 22 flows; and a collision bar 45 that is provided on a flow passage of the extraction air and with which the extraction air collides. The extraction air nozzle 41 has a plurality of blow holes 41a blowing the extraction air toward a tip part 22a of the main wing front edge part 22. The collision bar 45 is provided to face the blow holes 41a. The extraction air blown from the blow holes 41a toward an inner wall surface 31 near the tip part 22a collides with the collision bar 45, and flows backward along the inner wall surface 31. The main-wing front edge part 22 is entirely heated uniformly, thereby efficiently preventing icing on the outside of the main-wing front edge part 22.
KAMIFUJI YOICHI
AOKI YASUTAKA
KOBAYASHI NAOKI
ITO AKIRA
MIWA JUNICHI
Horikawa Miyuki
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