Tuesday, March 12, 2019
Need for speed Essay
The desire to innovate and to improve is unmatched of the most precious human feelings beca drop it is this actually same desire that has surface the road to progress in society. At the breakset, the first packs were useful that not efficient enough that mass could ride on them plainly goods and commodities could be transported. One of the reasons why is because safety and comfort werent a top priority for the railroad owner he or she retributive wanted to maximize his or her profit. Then, James Watt and his steam locomotive engine came about and rocked the world into the Industrial Revolution, a time when railroads were constantly be built all over Europe.Cities grew, economies boomed and busted, and economies and cultures became intertwined so that a small problem man who lives in Lille, France or Barcelona, Spain had to travel to Ukraine or Italy for a logical argument deal as quickly as possible (as quickly as possible since now, as opposed to the relaxed and laid ba ck past, time is m iodiny). So engineers were needed to devise a train that could travel at very fast travels while keeping energy consumption as humiliated as possible.The Japanese started the race for faster high speed trains with their type slug trains, the cut countered with the TGV, and many other companies came out with their own high speed trains Acela, Eurostar, and the Shinkansen, among others 3. The increase in competition benefitted the consumer, the individual needing to get across the clean because now he or she had a choice between distinguishable trains, severally known for a specific accommodation. For example, TGV was an electric train so the energy consumption of the trains is very low.However, it is little noisier than other lines so the handicraft off is subjective to the persons taste. Eventually, all the train lines would judge to balance energy consumption, safety, speed, and comfort in order to provide the smoothest offset they could possibly offer. 4 In essence, aerodynamics is the interaction of breeze on an goal 7. In the case of high speed trains, the aerodynamics of the train depends on many factors aerodynamic drag, shove variations inside train, train-induced iow, cross-wind effects, ground effects, pressure waves inside dig, impulse waves at the exit of dig, noise and vibration.8 Ultimately, decision solutions to these problems will result in a faster and smoother train ride, so it be sum ups imperative to identify the factors that locomote each of these so one hatful manipulate them, if possible, to ones needs. However, having so many factors that affect the aerodynamics of a train, one can truly begin to appear how complex this problem is for engineers since every change made to the train or the tracks could cost the companies owning them a huge amount of money for even the smallest of changes.Specifically, the purpose of the high speed train has revolutionized long distance ground exile since it has provid ed people with a much faster way to travel, sometimes snub a seven hour long trip to three hours However, to quail such a trip so significantly, the path from metropolis to city (in this place Boston to Washington D. C. ) must be as transmit as possible 2. This means that in some cases a tunnel must be built through a bulk to have for a high speed train to pass through the mountain and get to its destination as quickly as possible.In ground of high speed trains, there are many different types, each with its advantages and disadvantages. For example, the world renown TGV It has huge advantage in that it can use the same railroad lines as topical anesthetic trains so the cost of fashioning railroad tracks is reduced. However, one of the disadvantages is that using these same train tracks, just the mere fact that the TGV uses the same tracks as local trains means that the TGV limits the size and specifications of local trains because the wake of the TGV causes a wind tunnel t hat affects the trains behind it.1 2 In impairment of what the future has in store, trains havent even started to reach their limit. From rhythmical train to the high speed train, the speed was increased. The TGV is an obvious example of this modulation given that it broke the record for the fasted train, maxing out at 357 mph. The next rate is along the lines of the Japanese maglev taking friction out of the equation, the Maglev has the ability to greatly reduce the drag and the vibration in the train, thence making the train that much faster.In the foreseeable future, there is a concept that would take the Maglev above and beyond its achievements so farther an evacuated pipe is a massive vacuum in a tube stretching for miles and miles. Interestingly, if this method is designed and works, it may potentially reap the benefits since the beginning. This occurs because air drag takes such a significant amount of energy out of the system (the system being defined as the train) t hat minimizing it to a negligible level could immediately save millions upon millions of dollars 8 9.On the other hand, there are changes that have been made to the train itself rather than to the environment surrounding it. The Japanese Hayabusas nose is angled and sleek so it can legislate tunnel boom, the sound of a train leaving a tunnel. dig boom is caused by a fast train pressurizing the air in front of it as it goes through a tunnel until it comes out of the tunnel with the pressurized air and makes a very loud sound.Trains in the past had a smaller tunnel boom that occurred right before the train unexpended the tunnel (the sound of a train coming from inside a tunnel) however, now that the trains are that much faster, they catch up to the pressurized air and come out together, creating constructive interference, to make a bigger sound 5. Furthermore, the French Alstrom developed an upgraded TGV called the AGV. What was interesting about how the French upgraded the TGV is that they took the power system of the TGV and all in all transformed it now it has the capacity of generating higher speeds at a division of the original TGV energy consumption.Dont forget that the TGV was designed as an electric train, so to have a power system that can do more with less energy is a huge procession 5 In conclusion, the fact remains that the fast paced society of today has geared people to want to do everything more quickly. Following this train of thought, it makes sensation that high speed trains are the future in transportation. Throughout hi story, people have shown a want, a need for speed.Works Cited 1 Fox News. Associated Press. http//www. foxnews. com/story/0,2933,263542,00.html (accessed July 15th, 2012) 2 Plumer, Brad. The Washington Post. http//www. washingtonpost. com/blogs/ezra-klein/wp/2012/07/16/amtraks-151-billion-high-speed-rail-plan-are-there-cheaper-options/ (accessed July 15th, 2012) 3 European Railway Server. TGVweb. http//www. trainweb. o rg/tgvpages/history. html(accessed July 17th, 2012) 4 http//www. buzzle. com/articles/advantages-and-disadvantages-of-maglev-trains. html 5 Railway-Technology. com. On Track. http//www. railway-technology. com/features/feature117829/(accessed July 15th, 2012).6 James, Randy. while U. S. http//www. time. com/time/nation/article/0,8599,1892463,00. html (accessed July 16th, 2012) 7 Bopp, Rudolf Hagenah, Bernd. Gruner. http//www. gruner-gmbh. at/aktuelles_gmbh_at/pdf_pool/D_HAB_Porto. pdf 8 Raghunathan, Raghu S. Setoguchi, T. Progress in Aerospace Sciences. Aerodynamics of high-speed railway train http//ompldr. org/vMXlsOA/Aerodynamics_HSR02. pdf 9 Hoffman, Carl. Popsci Trans-Atlantic Maglev. http//www. popsci. com/scitech/article/2004-04/trans-atlantic-maglev.