Computer scientist Alan Mislove (Northeastern University, Boston) and his colleagues have built a map simulating the psychological state of Americans at each time based on analyzing 300 million messages on the social network Twitter.

Computer scientist Alan Mislove (Northeastern University, Boston) and his colleagues have built a map simulating the psychological state of Americans at each time based on analyzing 300 million messages on the social network Twitter. 0
Computer scientist Alan Mislove (Northeastern University, Boston) and his colleagues have built a map simulating the psychological state of Americans at each time based on analyzing 300 million messages on the social network Twitter. 0

Precooling technology has potential for application in reusable spaceplanes.

A research team from the British company Reaction Engines successfully built a precooler at a simulated speed of Mach 3.3, equivalent to 4,075 km/h, helping to install large supersonic engines on jet aircraft.

The next step is to test the technology at a speed of Mach 5.5, equivalent to 6,800 km/h, which could shorten the flight time between London and New York to less than an hour.

Computer scientist Alan Mislove (Northeastern University, Boston) and his colleagues have built a map simulating the psychological state of Americans at each time based on analyzing 300 million messages on the social network Twitter.

Technology makes hybrid rocket boosters a reality

Pre-cooler in the SaberĀ engine.

Reaction built the TF2 test facility at the Colorado Spaceport, USA, and used a General Electric J79 turbojet engine to simulate the conditions the aircraft would experience at supersonic speeds.

Oxfordshire-based company Reaction claims that the plane can cover the distance between London and New York in less than an hour when traveling at maximum speed.

Precooling technology is designed to lower the air temperature passing through the engine from over 1,000 degrees Celsius to room temperature in 0.05 seconds.

From takeoff until reaching a speed of Mach 5.5, the Saber engine will feed oxygen in the air into the rocket combustion chamber.

An Khang (According to BBC)

Related Post

Leave a Reply

Your email address will not be published. Required fields are marked *