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The Physics of Magnetic Levitation
Physics 212X Spring 2011
John Dutton
04/12/2011

How Feasible are MagLev Trains when energy costs are so high?
   
  •   Faster trips- high peak speed and high acceleration/braking 
    enable average speeds three to four times the national highway
    speed limit of 65 mph (30 m/s) and lower door-to-door trip
    time than high-speed rail or air (for trips under about 300
    miles or 500 km). And still higher speeds are feasible.
    Maglev takes up where high-speed rail leaves off, permitting
    speeds of 250 to 300 mph (112 to 134 m/s) and higher.
  •   High reliability-less susceptible to congestion and weather 
    conditions than air or highway. Variance from schedule can
    average less than one minute based on foreign high-speed rail
    experience. This means intra- and intermodal connecting times
    can be reduced to a few minutes (rather than the half-hour or
    more required with airlines and Amtrak at present) and that
    appointments can safely be scheduled without having to take
    delays into account.
  •   Petroleum independence-with respect to air and auto as a 
    result of being electrically powered. Petroleum is unnecessary
    for the production of electricity. In 1990, less than 5
    percent of the Nation's electricity was derived from petroleum
    whereas the petroleum used by both the air and automobile
    modes comes primarily from foreign sources.
  •   Less polluting-with respect to air and auto, again as a 
    result of being electrically powered. Emissions can be
    controlled more effectively at the source of electric power
    generation than at the many points of consumption, such as
    with air and automobile usage.
  •   Higher capacity-than air.  At least 12,000 passengers per hour 
    in each direction with potential for even higher capacities at
    3 to 4 minute headways. Provides sufficient capacity to
    accommodate traffic growth well into the twenty-first century
    and to provide an alternative to air and auto in the event of
    an oil availability crisis.
Points above quoted from http://ntl.bts.gov/DOCS/TNM.html Section 1.1.5 of the Final Report of the National MagLev Initiative

All of the points lead to MagLev trains being a very efficient means of travel. Hopefully someday we will utilize this great technology.



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