Lahore:
A Chinese company, Space Transportation, has successfully tested its supersonic passenger plane, the Yunxing.
This aircraft has a speed of 3045 miles per hour (Mach 4). As if it will take passengers from London to New York in two hours and from Karachi to Lahore in just 13 minutes.
Enormous time savings, the Yansheng supersonic ship will begin service in the next few years.
It flies with the help of a Ramjet engine which burns the oxygen of the atmosphere and thus generates great speed.
