Helicopter armor structure resisting half-speed 12.7 mm armor-piercing bullet

The invention discloses a helicopter armor structure resistant to a half-speed 12.7 mm armor-piercing bullet, and relates to the field of helicopter structure design. The structure comprises a ceramic panel and a carbon fiber honeycomb sandwich backboard which are sequentially arranged in the incidence direction of the armor-piercing bullet; the ceramic panel is made of anti-bullet ceramic; the carbon fiber honeycomb sandwich back plate comprises a bullet facing face wall plate, a carbon honeycomb sandwich layer and a bullet backing face wall plate which are sequentially arranged in the armor-piercing bullet incidence direction. The bullet facing face wall plate and the bullet backing face wall plate are both made of metal or fiber reinforced composite materials. The carbon honeycomb sandwich layer is of a honeycomb structure; the material of the carbon honeycomb sandwich layer is a carbon fiber reinforced composite material; the ceramic panel is used for breaking the bullet of the armor-piercing bullet and r