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马航MH370客机失联一个多月以来,找到飞机上的黑匣子成为搜寻的关键点。黑匣子的专业术语叫作“飞行记录器”。通常每架飞机上有2台。一台是飞机数据记录器(FDR),负责记录飞行中各种参数,如飞机的高度、速度、航向、姿态、操纵面位置等,记录的时间范围是最后的25小时;另一台是座舱话音记录器(CVR),可以保留停止记录前30分钟或120分钟驾驶舱内的各种声音,包括机上空勤人员的对话、机上与地面的通话等。早在二战时期,FDR就开始在战斗机上试用,但其记录的信息有限。直到1956年,澳大利亚科学家
Malaysia Airlines MH370 passenger plane lost more than a month, find the black box on the plane to become the key point of search. The jargon for black boxes is called “flight recorder.” There are usually two on each plane. One is an aircraft data recorder (FDR) that records various parameters of the flight, such as the altitude, speed, heading, attitude, control surface position of the aircraft, etc. The recorded time range is the last 25 hours; the other is the cockpit Voice Recorder (CVR), which retains all sounds in the cockpit 30 minutes or 120 minutes before recording stops, including on-air flight crew conversations and on-board calls to the ground. As early as during World War II, the FDR started trial on fighter jets but recorded limited information. Until 1956, an Australian scientist