The American Aeronautics and Space Agency (NASA) agreed with Lockheed Martin to produce a jet aircraft that did not sound sonic when the speed of sound was exceeded for testing in passenger transport and civil aviation.
In a statement made on NASA's website, the agency said it had reached an agreement with American defense and aerospace firm Lockheed Martin for $ 247.5 million to produce an airplane prototype that would be devastating to a violent sonic explosion that jet aircraft were exceeding the speed of sound.
It was noted that the company committed to complete a prototype that NASA will use for testing purposes by the end of 2021 under the agreement.
DOOR CLOSING VOICE IN THE SONIC EXPLOSION
A custom-built plane called the "X-Plane" can travel at a speed of 1,500 kilometers per hour while it is about 17 thousand meters (55 thousand feet) high. It was recorded that the sound level that the aircraft would take when it exceeded the sound speed was 75 decibels (PLDB). This is equivalent to the sese that comes out when a car's door is closed.
The fall in sound level is expected to open up for supersonic air transport for civilian purposes. Low-noise supersonic aircraft will enable passenger and cargo access in urban areas, as it will destroy sonic explosions, which damage human health and cause noise pollution.
NASA plans to make test flights in certain American cities starting in 2022 with X-Plane. The sound measurements on these flights and the reactions of the local people to the flights are intended to guide the civil aviation authorities in their voice arrangements.