Κυριακή 13 Απριλίου 2014

Παράξενα τρένα.Το'' μαύρο σκαθάρι'' -τρένο με μηχανή JET


Jet powered train 

Τα χρονικά της ιστορίας είναι γεμάτα από παράξενα και ενδιαφέροντα . Ένα από αυτά είναι μερικά από τα πιο περίεργα τρένα του New York Central Ο βασιλιάς , όμως, είναι πιθανώς μια πειραματική έκδοση τρένου  με μηχανές jet από το 1966.Το....<< Μαύρο Σκαθάρι >>


. I present to you the “Black Beetle:

Essentially, the M-497, better known as the “Black Beetle,” is an RDC-3 with a shovel nose to be more aerodynamic, coupled with jet engines of a B-36. Tested in Ohio, it achieved a speed of 183.85 MPH. Eventually, the jets were removed, and the RDC was returned to service, albeit much slower.
{Ουσιαστικά, το M-497, περισσότερο γνωστό ως το "Μαύρο σκαθάρι " είναι ένα RDC-3 με μια διαφορετική μύτη  σαν ''φτυάρι'' για να είναι πιο αεροδυναμικό, σε συνδυασμό με τους κινητήρες τζετ ενός B-36. Δοκιμασμένο στο Οχάιο, πέτυχε ταχύτητα των 183,85 MPH. Τελικά, οι μηχανές jet  αφαιρέθηκαν, και το RDC επεστράφη στην υπηρεσία, αν και πολύ πιο αργό πλέον!}

Though far more tame than the jet-powered train, it is too difficult for me not to mention the Xplorer, which has always looked a bit comical to me.
Xplorer The New York Central’s Xplorer, as shown in a 1956 edition of Popular Science.
The Xplorer was one of many trains designed to be “high speed” in the United States, in this case, high speed was 120 miles per hour. Running from Cleveland to Cincinnati, the goal was a smooth train that banked into turns. Alas many said the ride was actually rather rough. A similar variant was produced for the New Haven, and ran into Grand Central.
AeroTrain
Also falling under the category of bizarre-looking trains is the Aerotrain. Built by GM, a particular focus was placed on looks, leading to a rather unique aesthetic. Used by the New York Central between Cleveland and Chicago, the “lightweight with a heavyweight future” failed to gain popularity. Passengers found the ride rough and the cars uncomfortable. After only a few months, the New York Central’s Aerotrain went to Union Pacific, where it ran between Los Angeles and Las Vegas.
Will atomic energy power tomorrow's railroads? Will atomic energy power tomorrow’s railroads?
Although the aforementioned trains may fall under the category of bizarre, none can really claim the title of strangest train ever conceived. That honor may go to the X-12. Picture the AeroTrain shown above, but put a nuclear reactor inside it – that is pretty much the X-12. Thought up by physicist Lyle Borst and his students at the University of Utah in the 1950s, the X-12 was a concept for a nuclear-powered train. Though that sounds a little bit outlandish today, one must think of the climate during the early years of the Atomic Age. Some of the world’s brightest minds had come together to discover the secrets of the atom, culminating in the first atomic bomb. That bomb caused unprecedented death and destruction. Who would want that to be their legacy? Thus many scientists involved in the bomb later focused on the peaceful applications of the atom, and something more worthy to be remembered for.
x12
x12_1
x12_2
x12_3
x12_4 Diagrams of the X-12, from Life Magazine, June 21, 1954./
Many people, however, were overly optimistic when it came to nuclear power. They imagined nuclear reactors one day as small as bricks, and a world where we no longer needed to mine coal, and where gas stations would be a thing of the past. Proposals for nuclear powered submarines, planes, trains, and even automobiles were all made. In fact, the US military spent well over a billion dollars trying to come up with a design for a nuclear-powered plane that could roam the skies indefinitely, never having to land for a fuel fill up. The nuclear plane was actually to be a modified B-36 – the same plane whose engines graced the “Black Beetle.”
X-12 Diagram Diagram of the X-12 from Railway Age magazine, June 1954.
The X-12 concept locomotive was 160 feet long, and contained a cylindrical Babcock and Wilcox-designed reactor, which measured three feet in diameter and a foot long. Fueled by Uranium-235, the locomotive was designed operate continuously for several months without ever having to refuel. Hypothetically, with eleven pounds of fuel it could run for an entire year, but in practice the fuel would likely need to be changed a few times a year. In total, the X-12 locomotive would weigh 360 tons, 200 tons of which would be a protective shield from the radiation of the reactor. Behind the locomotive would be a 65 foot radiator car, required for cooling the reactor.
To fit into the limited clearance required of a locomotive, unconventional machinery would be required for the X-12, designed to squeeze into tight spaces. And in order to operate such a small reactor to also fit in that space, the fuel had be highly refined, weapons grade uranium. Besides the 200 ton shielding protecting the reactor, in the event of a crash a forcible impact from any direction would cause the reactor to immediately shut down.
Inside the "Hot Engine" Diagram of the X-12 from Popular Science, April 1954.
Unlike the aforementioned bizarre trains, the X-12 was never actually built. Though more feasible than the atomic aircraft, the locomotive would be expensive to build – at least $1.2 million. Maintenance on the locomotive would have been very difficult, as the inner workings would have become highly contaminated with radiation. And despite assurances that the reactor would be highly protected, safety would be sketchy at most if it were ever in an accident.
Safety is, of course, a very big consideration for any type of nuclear power. Though it could be argued that the effects of radiation on people were not fully known until after the dropping of two atomic bombs on Japan, we eventually learned that nausea, vomiting, diarrhea, hair loss, fever, and hemorrhaging were all hallmarks of exposure to ionizing radiation. In the optimism of the Atomic Age, many thought that these effects could be reversed, but in truth the effects of nuclear exposure were cumulative, and defects caused could even be passed on to future generations. Because of these very reasons, anti-nuclear sentiment began to spread, and the 1979 Three Mile Island accident and the 1986 Chernobyl disaster pretty much sealed the deal. Although there are many risks, nuclear power is truly a novel way of generating electricity without releasing the greenhouse gases that result in global warming, but you probably won’t see it operating your trains anytime soon.

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