Daryl Oster vs. Henri Coanda: ETT vs. Aerotub Express
Americans want to implement an idea that Romanian scientist Henri Coanda had proposed it in the early 1960s: the vacuum tunnel transport.
A U.S. company came up with a transportation method capable of carrying people from New York to Los Angeles in just 45 minutes. Evacuated Tube Transport is a transportation technology working under vacuum in order to minimize air friction. The name “Evacuated Tube Transport” (ETT) was introduced at the beginning of 1990s by American engineer Daryl Oster who subsequently patented it in 1997.
The costs of the vacuum transportation system are estimated to be quite low: a quarter of those needed for building a highway and one tenth the price of a railway.
Inside ETT people are supposed to travel at speeds of 6500 km/s. Credit: realitatea.net
The point is that electric-powered passenger/load capsules are placed inside a vacuum tunnel which is continuously pumped down. The tunnel is made up of 1.5-meter diameter tubes which are merged along the route. The lack of air (i.e. friction) enables the capsules to reach fantastic speeds of 6500 km/s within a relatively short time. The top speed can be achieved in approximately three minutes, because it takes some time to accelerate the capsules inside the vacuum environment. However the capsule would already travel 161 kilometers during this acceleration time.
If you are faced with such problems you shouldn’t shy away from the truth, get herbal viagra in italy and resume your normal sexual life. Some patients complain that they feel free sample of cialis stiffness on the implanted joint, while others feel frustrated as it did prior, because the therapy is the same. This is bringing about expanded inflow of blood cialis 60mg in the penis which ultimately results in the rigid and erect penis. Medically speaking there are two types of erectile dysfunction; primary and secondary. order levitra online twomeyautoworks.com Despite the fact that Daryl Oster coined the ETT, yet a very similar idea was drafted by Romanian Henri Coanda, one of the greatest inventors and scientists. On the websites where Oster project is presented, many users noted that 50 years ago, a Romanian proposed a similar project.
AEROTUB EXPRESS – Henri Coanda’s genial idea
First, Coanda thought about freight shipping. His idea relied on an underground system that allows carrying freight from Bucharest to Constanta (Romania) at speeds that could reach 500 km / h. According to Coanda’s estimation, thousands of tons of goods would allegedly be transported on a journey of 230 miles in 30-45 minutes.
“Cargo containers were just floating on an air cushion. Their transport was based on the pressure difference at the ends of tubes. The pressure was pushing the goods from behind.”
The invention proposed in the 1960s, was further developed. Coanda “was seeing” such tubes through which people travel from Bucharest to Ploiesti of Brasov. According to his plans, the journey would have taken about ten minutes. During scientist’s life, the project remained on paper. After 1972 the romanian authorities tried to applied in practice. A tasnportationbase was set-up at Maneciu on the Teleajănului Valley. The system, which was a little altered, was used in a quarry until 1989 before being abandoned.
Evacuated Tube Transport is patented by Daryl Oster, however the idea was first proposed by Romanian scientist Henri Coanda