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二战中盟军使用数量最多的B-24“解放者”是第一种装备前三点式起落架和大展弦比机翼的轰炸机。1939年12月29日.威廉·惠特利驾驶XB-24在加利福尼亚州圣地亚哥进行了首飞。虽然只有少部分人有幸目睹但所起到的聂动效应却是巨大的.西方国家强烈的购买欲也因此而产生。当时美陆军航空队(USAAC)认为这种轰炸机将成为现代战争中远程轰炸的主角.但那时轰炸机市场被道格拉斯公司生产的B-18“大刀”式和波音公司的B-17“空中堡垒”占据。要想和道格拉斯和波音这样著名的大公司竞争.难度可想而知。
The most widely used B-24 Liberator in World War II was the first bomber to equip the first three-point landing gear and large aspect ratio wings. December 29, 1939. William Whitley flew the XB-24 to its first flight in San Diego, California. Although only a few people have been fortunate enough to witness this move, the NIE effect has been enormous, and the strong desire of Western countries to buy it has also come about. At that time, the USAAC believed that such bomber would become the protagonist of long-range bombing in the modern war, but the Bomber B-18 and Boeing B-17 bomber markets were manufactured by Douglas at that time. Air Bastion "occupy. It's hard to imagine competing with big names such as Douglas and Boeing.