The Boeing YB-9 was the first all-metal monoplane bomber aircraft designed for the United States Army Air Corps. The YB-9 was a much enlarged twin-engine development of Boeing's single …

Although it was not the first monoplane bomber to be flown by the US Army Air Corps (USAAC), the Boeing B-9 was the first all-metal monoplane bomber used by the air service.

Anticipating all-metal fighters, the B-9 was the first operational combat aircraft with all-metal cantilever monoplane design, semiretractable undercarriage, and variable-pitch propellers. …

In 1932, Boeing launched a twin-engine B-9 bomber. The Boeing B-9 aircraft was the first twin-engine U.S. Army bomber to have a low-wing cantilever (internal bracing only) design. The YB …

2017年10月23日 · Long before Boeing became a household name with its B-17 "Flying Fortress" bombers of World War 2 fame, it developed the first all-metal monoplane bomber for the …

The Air Corps' first all-metal monoplane bomber was the Boeing B-9. Produced during 1932-1933, the B-9 was outclassed by its contemporary all-metal Martin B-10 and only seven were …

The Boeing B-9 bomber was the earliest plane based on the advanced, extremely aerodynamic Monomail design of 1930 that made traditional biplane construction ...

2016年8月31日 · Boeing engineers have, indeed, developed a bombing plane of radically new type. Designed to carry a crew of five and bombs weighing more than a ton, this twin-motored, …

The Boeing YB-9 was the first all-metal monoplane bomber aircraft designed for the United States Army Air Corps. The YB-9 was an enlarged alteration of Boeing's Model 200 Commercial …

The Boeing YB-9 (Also known as the Model 214/215/246) was the company's first all-metal bomber design. In 1930, the bomber squadrons operated by the US Army Air Crops mostly …