A chicken gun is a large diameter compressed air cannon used to test the strength of aircraft windshields and the safety of jet engines. A common danger to aircraft is that they collide with birds in flight. Most parts of an aircraft are strong enough to resist such a bird strike. Jet engines may sustain serious damage, however, and cockpit windows are necessarily made of transparent materials and are a vulnerable spot. The chicken gun is designed to simulate high speed bird impacts. It is named after its unusual projectile: a whole dead standard-sized chicken, as would be used for cooking. This has been found to accurately simulate a large, live bird in flight. The test target is fixed in place on a test stand, and the cannon is used to fire the chicken into the engine, windshield, or other test structure.

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