Afterburner and aircraft engine

An afterburner configured to increase thrust of an aircraft engine by burning a mixed gas of a combustion gas discharged from a core passage of the aircraft engine and air discharged from a fan passage of the aircraft engine again while supplying fuel to the mixed gas, the afterburner comprising:

• an outer duct provided to an outlet portion of an engine case of the aircraft engine;
• a cylindrical liner provided inside the outer duct, and configured to allow the mixed gas to flow through the liner;
• a fuel injector configured to inject the fuel into the liner;
• an igniter configured to ignite the mixed gas including the fuel inside the liner;
• and
• a flame stabilizer disposed in a rear of the fuel injector inside the liner, including a plurality of gutters arranged radially and each configured to form a flame stabilization area on a downstream side of the gutter, and configured to hold a flame, wherein
• each gutter is formed from a curved apex section and flat plate-shaped side surface sections integrally formed on two sides of the apex section, and has a V-shaped cross- sectional shape which is opened to a downstream side of the gutter, and
• at least one through-hole is formed only in each side surface section of the gutter.