The B-29 bomber that dropped Little Boy on Hiroshima was Enola Gay.
Enola Gay was a Boeing B-29 Superfortress assigned to the 393rd Bombardment Squadron of the United States Army Air Forces. Colonel Paul Tibbets piloted the aircraft during the August 6, 1945, mission. Tibbets had named the bomber after his mother, Enola Gay Tibbets.
The aircraft released Little Boy at about 8:15 a.m. from high altitude. It then turned sharply away from Hiroshima to reduce the crew's exposure to the blast wave. The bomb detonated over the city, producing an enormous explosion and widespread destruction.
Enola Gay is often confused with Bockscar, the B-29 that dropped Fat Man on Nagasaki on August 9. The Great Artiste participated in both operations as an observation or support aircraft, while Straight Flush was the weather-reconnaissance aircraft used before the Hiroshima mission. Enola Gay is preserved at the Smithsonian's National Air and Space Museum in Virginia.