امريكا، طائرات

طائرة أمريكية أسرع من الصوت بـ "ست مرات"

Keep going امريكا، طائرات 20 نوفمبر 2013

أجرى فريق أمريكي عسكري للأبحاث تجربة علي طائرة غير مأهولة تبلغ سرعتها نحو ست مرات سرعة الصوت، وهذه الطائرة ستعمل على تقليص الفارق في الس...

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