Phát âm chuẩn cùng VOA – Anh ngữ đặc biệt: US Company Developing Space-Based Plane Tracking (VOA)

Học tiếng Anh hiệu quả, nhanh chóng: http://www.facebook.com/HocTiengAnhVOA, http://www.voatiengviet.com/section/hoc-tieng-anh/2693.html. Nếu không vào được VOA, xin hãy vào http://vn3000.com để vượt tường lửa. Các chương trình học tiếng Anh miễn phí của VOA (VOA Learning English for Vietnamese) có thể giúp bạn cải tiến kỹ năng nghe và phát âm, hiểu rõ cấu trúc ngữ pháp, và sử dụng Anh ngữ một cách chính xác. Xem thêm: http://www.facebook.com/VOATiengViet

Luyện nghe nói và học từ vựng tiếng Anh qua video. Xem các bài học kế tiếp: https://www.youtube.com/playlist?list=PLD7C5CB40C5FF0531

Tech: Luyện nghe nói tiếng Anh qua video: Chương trình học tiếng Anh của VOA: Special English Technology Report. Xin hãy vào http://www.voatiengviet.com/section/hoc-tieng-anh/2693.html để xem các bài kế tiếp.

Experts say ground-based radar is unable to track about 70% of aircraft flights. But that has been true since the 1940s. This is one reason the Malaysia Airways Flight 370 plane has not been found. Now, there are plans to deploy aircraft tracking satellites into space so that no plane will ever be “lost” again. Iridium, a satellite communications company, plans to have 66 new satellites orbiting the planet. They call the system of satellites the NEXT constellation. A constellation is a group of stars. Iridium will begin the project in December. The new satellites will be able to receive an airplane’s location signal every few seconds. Don Thoma is the CEO of the aircraft tracking company Aireon. He says MH370 showed the limits of the current tracking system. The new satellites’ receivers will update every few seconds. They will get information from equipment in the pilot area of the aircraft. Iridium will check the satellites from a control center in Virginia. Aircraft safety rules require large distances between planes since they cannot currently be tracked over entire oceans. But once the Iridium NEXT satellites are setup in 3 years, planes will be able to fly closer to each other. Airlines will then be able to save money on fuel. Passengers will see more flights and more direct flights to locations around the world. The company is also building an emergency operations center 10 kilometers north of Shannon Airport in Ireland.

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