巴西于1986年11月19日发射了第一枚探测火箭Sonda4,这是当今巴西最大的火箭。这枚固体火箭是由航天技术中心制造的,直径为1米,重7.5吨,有效载荷500公斤。在发射过程中,除无线电遥测发射机出现故障外,其它一切顺利,巴西政府认为此次发射是成功的。这枚新火箭将于1989年发射巴西的第一颗卫星(200公斤),该卫星将被送入高度为600公里的环形轨道,以保证数据的收集。 Brazil launched its first detection rocket Sonda4 on November 19, 1986, the largest rocket in Brazil today. The solid rocket was manufactured by the Space Technology Center with a diameter of 1 meter, a weight of 7.5 tons and a payload of 500 kg. During the launch, everything went well except for the failure of the radio telemetry transmitter, which the Brazilian government considered the launch to be successful. The new rocket will launch the first Brazilian satellite (200 kg) in 1989, which will be sent to a circular orbit at a height of 600 kilometers to ensure data collection.