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NASA develops new jet airliner: capable of generating mobile air

via:CnBeta     time:2017/11/14 12:39:54     readed:519


Reported in the traditional aircraft design, the air tightly attached to the fuselage. In the new design, fans collect air and accelerate it, resulting in greater thrust. In the next few months, the aircraft will enter the preliminary test phase.

In the new design, fans collect, accelerate, and convert these forces into thrust, creating the advantage, according to the new atlas website. There are two engines that provide thrust and power to drive the fan.

This design concept called "rear boundary layer single channel turbine propeller aircraft (STARC-ABL), proposed by Jim Field and Jason Welsted research, NASA is considering to be included in the future test of X series aircraft.

In appearance, this kind of design seems almost the same as a conventional wing body split aircraft that has been tested and validated.

Unlike the traditional aircraft, however, the aircraft requires a lot of power (about 3 megawatts) for turbine propulsion.

The engine mounted on both wings provides 80% thrust during takeoff, providing 55% thrust during cruise. The rest thrust is provided by the full electric boundary layer suction (BLI) fan installed on the tail fin.

Because the tail has more than one motor, the engine on both wings does not need to produce all thrust, so the size can be smaller. The size of the engine is small, the weight is small, the resistance is also small, the fuel required by the aircraft will be reduced accordingly.

Researchers estimate that the new design or energy efficiency will increase by about 10%.

STARC-ABL is part of the NASA's new aviation outlook project aimed at fuel consumption, emission reduction and noise reduction. In June this year, NASA announced that the supersonic X series will be manufactured as early as next year.

According to the American aviation weekly report, NASA hopes to carry out the first flight test of "supersonic transport" (QueSST) in 2021. The aircraft aimed at generating a boom supersonic aircraft is much lower than the other.

The design standard of QueSST is that the flight speed reaches 1.4 times the speed of sound at the height of about 17 thousand meters from the ground. The fuselage shape design can be supersonic shock wave and expansion wave related separation, this is research results of Lockheed Martin's Kang g factory in 20 years.

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