Which bomber was developed to replace the B-47 due to its increased range?

The B-52 Stratofortress was developed specifically to replace the B-47 Stratojet, primarily due to its superior range and payload capacity. The B-52’s design allows it to conduct long-range bombing missions, making it an ideal strategic bomber for the United States Air Force during the Cold War. It can carry both nuclear and conventional munitions, and its long operational range enables it to reach targets that the B-47 could not effectively engage.

In contrast, while the B-1, B-29, and B-58 Hustler were also significant aircraft in their own rights, they were developed under different operational concepts or for different missions. The B-1, for instance, was designed in the era following the B-52 but focused more on low-level penetration and versatility. The B-29 is primarily a World War II bomber, and the B-58 Hustler was designed for supersonic strategic bombing but did not serve as a direct replacement for the B-47. Therefore, the B-52 is the most appropriate answer for its role as the successor to the B-47 with enhanced range capabilities.