Why This Aircraft Doesnt Eject Bullet Shells

The A-10 Thunderbolt II is a legendary aircraft renowned for its ruggedness and effectiveness in close air support missions. 

Yet, one peculiar feature sets it apart from other aircraft in its class – it doesn’t eject bullet shells.

3,900 RPM Cannon

The A-10 is equipped with a fearsome weapon: the GAU-8 Avenger rotary cannon. This massive cannon fires 30mm armor-piercing shells at an astounding rate of 3,900 rounds per minute.

However, unlike smaller caliber cannons found on other aircraft, the GAU-8 generates significant recoil and heat when firing. 

The Reason Why

Ejecting spent casings would create additional weight and drag, affecting the aircraft’s performance and maneuverability. 

Moreover, the A-10’s CAS role often involves flying at low altitudes and slow speeds, where ejected casings could pose a hazard to the aircraft’s engines or other critical components.

An Easy Solution

Instead of ejecting shell casings, the A-10’s designers opted for a closed-bolt system, where spent casings remain inside the aircraft. 

By retaining the casings, the A-10 avoids the risk of foreign object damage to its engines or airframe. Additionally, the closed-bolt system simplifies maintenance and reduces the likelihood of malfunctions caused by ejected casings jamming the aircraft’s mechanisms.

While it may seem unconventional compared to other aircraft designs, it reflects the A-10’s unique role as a dedicated close air support platform optimized for the rigors of modern warfare.