The Chinese peer-reviewed journal Tactical Missile Technology published an article in which the People's Liberation Army Air Force specialists stated that they have made a number of significant improvements to the classified hypersonic drone model, which will allow the aircraft at speeds above Mach 5 to reach a safe for themselves and others. landing trajectory. The Virgin Galactic apparatus, we recall, was moving at a speed of the order of Mach 3, and this was already a problem.
For an approach at Mach 5 from an altitude of 30 km, for example, the ship's hypersonic engines must shut down 200 km before the runway. In case of an error with the course, the hypersonic engines will no longer be turned on. Landing should be done in one attempt and in a well-defined airspace. Modern on-board computers for such speeds do not have time to calculate the descent modes using the entire spectrum of data, so it was decided to stop only at measuring two quantities: air pressure and altitude.
The uniqueness of the idea of the Chinese specialists is that they proposed to calculate three descent models for each landing instead of usually one. Depending on the altitude and pressure data, a particular descent pattern will be selected. On-board computers manage to cope with such a volume of information. Otherwise, hypersonic flights will be like in the case of the Virgin Galactic spacecraft - this mode of transport will fly out of authorized air corridors and pose a threat to ordinary passenger air transport.
In general, this is not just about drones. China has launched a program to create passenger hypersonic aircraft. Such a ship in an hour will have to deliver ten passengers to any corner of the Earth. Controllability and the ability to accurately maneuver, which today is unthinkable without computers, will be one of the problems along the way.
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