Boeing 247 | |
|---|---|
| 国家 | 美国 |
| 作用 | 客机 |
| 首次飞行 | 1933年2月8日 |
| 建立 | 75 |
这 波音247型 是早期的美国客机，被认为是第一架完全纳入全金属（阳极化铝）半金属结构、全悬臂机翼和可伸缩起落架等先进飞机。其他高级功能包括控制表面装饰选项卡、自动驾驶仪和用于机翼和尾翼的除冰靴。
源： 维基百科上的波音 247
| 波音247D型四处走动 | |
|---|---|
| 摄影师 | 弗拉基米尔·亚库博夫 |
| 本地化 | 国家航空航天博物馆 |
| 照片 | 79 |
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这 波音 247 was a groundbreaking aircraft that introduced many innovations to the aviation industry. It was an all-metal, twin-engine airliner that could carry 10 passengers and three crew members. It had a sleek design with a fully cantilevered wing, a semimonocoque structure and retractable landing gear. It also had advanced features such as trim tabs, an autopilot, de-icing boots and variable-pitch propellers.
The Boeing 247 first flew on February 8, 1933 and entered service with Boeing Air Transport on May 22, 1933. It was faster than any fighter plane of its time and could fly on one engine if needed. The Boeing 247 set a new standard for passenger comfort and safety, and influenced the design of later airliners such as the Douglas DC-1.
观点 ： 1967
