1949年英国研制成功的“彗星”号是世界上第一架喷气式客机,它的出现结束了活塞式螺旋桨飞机统治航空舞台几十年的历史,自此民航业正式进入喷气时代。“彗星”号飞机为流线型,机翼略为后掠,机翼根部装有4台涡轮喷气发动机。英国2002年为纪念喷气客机投入航线50周年而发行的1枚邮票上,着重突出了“彗星” The “Comet” developed by Britain in 1949 was the world’s first jet airliner. Its appearance has ended decades of history of the propeller-propeller aircraft governing the aviation arena. Since then, the civil aviation industry has officially entered the jet age. “Comet” for the streamlined aircraft, the wing slightly swept the wing root equipped with four turbojet. On a stamp printed in 2002 by the United Kingdom to mark the 50th anniversary of the launch of a jetliner jetliner, the “Comet”