Mỹ thử máy bay nhanh gấp sáu lần tốc độ âm thanh
Một người phát ngôn quân đội Mỹ ngày 14/8 cho biết Không quân nước này đã lên kế hoạch tiến hành một cuộc thử nghiệm quan trọng đối với loại máy bay không người lái X-51 WaveRider, mẫu máy bay có thiết kế cho phép bay nhanh gấp sáu lần tốc độ âm thanh (khoảng 5.800 km/h).
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uqbDunLhurvhu5XEkOG6ruG7k+G6u+G6pOG6uuG6u+G7mUJ2deG6u+G7k8O6d+G6u+G7k8Ot4buT4bq74buvw63hu4bhurvhu5Fp4buG4bq7dsah4buv4bq74buRd+G7r+G6u+G6puG7jeG7r+G6u+G7gGnhuqXhurvhu5l34bq74bqmw7rDreG7r+G6u8O6aeG7huG6u8OK4buPduG6u+G7k8O64bqs4buGcnbhurvhurThuqzDs3bhuqcv4bqnYi/hurJjKcO64buXd+G6u8OKw7nhu5fhuqZ2aeG7rytiL+G6smM=