The Republic XP-72 was an American prototype fighter-interceptor developed by Republic Aircraft as a progression of the P-47 Thunderbolt design. The XP-72 was designed around the Pratt & Whitney R-4360 Wasp Major 28-cylinder air-cooled radial engine with a supercharger mounted behind the pilot and driven by an extension shaft from the engine.

2018年3月5日 · The XP-72 was often called the Super Thunderbolt, or Superbolt, or Ultrabolt, and it benefitted from everything Republic had learned with the P-47 series, including the XP-47J. The XP-72 was essentially the wings, fuselage, and tail of a bubble-canopied P-47D combined with the close-fitting cowling used on the XP-47J.

2019年3月31日 · The Republic XP-72 Wasp Major-powered "Super Thunderbolt" (or "Ultrabolt") was being developed in the latter part of World War 2 (1939-1945) as the ultimate incarnation of the war-winning P-47 Thunderbolt fighter/fighter-bomber (also produced by Republic).

2025年2月2日 · Informally known as the Super Thunderbolt, the Superbolt, or the Ultrabolt, the Republic XP-72 was in essence a P-47 Thunderbolt that had its Pratt & Whitney R-2800 Double Wasp twin row radial engine swapped for a Pratt & Whitney R-4360 Wasp Major four-row radial engine, one of the most powered American radial engines placed into production.

2023年5月2日 · Republic Aviation Corporation developed the XP-72 as an advanced version of the successful P-47 Thunderbolt fighter. The P-47 was an extremely effective aircraft, celebrated for its ruggedness, firepower, and ability to endure significant damage while continuing to operate.

In this video, we talk about the Republic XP-72 Ultrabolt, a late-World War 2 propeller-driven fighter designed to succeed the Republic P-47 Thunderbolt. We talk about the successful career of...

The Republic XP-72 Wasp Major-powered "Super Thunderbolt" (or "Ultrabolt") was developed during the second half of WWII (1939-1945) as the ultimate incarnation of the war-winning P-47 Thunderbolt/fighter-bomber ( also made by the Republic).

2024年1月18日 · The XP-72 was called the Super Thunderbolt, or Superbolt, or Ultrabolt, and benefitted from everything Republic had learned with the P-47 series. The airplane was essentially the wings, fuselage, and tail of a bubble-canopy P-47D combined with the close-fitting cowling used on the XP-47J.

2025年1月16日 · XP-72，这款被誉为Super Thunderbolt、Superbolt或Ultrabolt的战机，充分汲取了P-47系列（涵盖XP-47J）的研发精髓。 其机翼、机身及尾部设计均源自P-47D，并配备了XP-47J上所使用的整流罩。

The Republic XP-72 Wasp Major-powered “Super Thunderbolt” (or “Ultrabolt”) was being developed in the latter part of of WW2 as the ultimate incarnation of the P-47 Thunderbolt. Only two prototypes were built, one of which was given an Aero Products contra-rotating propeller arrangement and had an estimated speed of up to 550 mph.