p-47 thunderbolt bubble canopy 3d model - P-47 Thunderbolt bubble canopy US fighter WWII by De Espona

The Republic P-47 Thunderbolt, also known as the Jug, was the largest single-engined fighter of its day, and a vast improvement over its predecessor. It was one of the main United States Army Air Force (USAAF) fighters of World War II. The Thunderbolt also served with a number of other Allied air forces. The P-47 was effective in air combat but proved especially adept in the ground-attack role. It had eight 50 caliber machine guns (four per wing). When fully loaded the P-47 could weigh up to eight tons. Its modern-day equivalent in that role, the A-10 Thunderbolt II, takes its name from the P-47.
Bubble canopies have been in use since World War II. The British had already developed the 'Malcolm hood', which was a bulged canopy, but the British Miles M.20 was one of the first aircraft designs to feature a true bubble canopy. Although it never went into production the idea of the bubble canopy was used on other British fighters, such as the Typhoon and Tempest. It was also taken on by the US for the P-51 Mustang and P-47 Thunderbolt among others.