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| Re: Possible Propulsion Failure Causes Smoke on a Boston Red Line Train (1336750) | |||
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Re: Possible Propulsion Failure Causes Smoke on a Boston Red Line Train |
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Posted by SelkirkTMO on Thu Jan 29 19:40:05 2015, in response to Possible Propulsion Failure Causes Smoke on a Boston Red Line Train, posted by heypaul on Thu Jan 29 19:21:45 2015. From the article, LOL!Propulsion systems vary by type of transportation and how they're powered, but in general they work by creating thrust to propel a vehicle forward. As NASA describes it, "a gas, or working fluid, is accelerated by the engine, and the reaction to this acceleration produces a force on the engine." In the case of the Red Line, which uses standard gauge heavy rail cars, electricity can also expel propellant to create thrust. Ummmm. No. But DO check the oil, please. :) |
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