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・ British Rail Class 117
・ British Rail Class 118
・ British Rail Class 119
・ British Rail Class 12
・ British Rail Class 120
・ British Rail Class 121
・ British Rail Class 122
・ British Rail Class 123
・ British Rail Class 124
・ British Rail Class 125
・ British Rail Class 126
・ British Rail Class 127
・ British Rail Class 128
・ British Rail Class 129
・ British Rail Class 13
British Rail Class 139
・ British Rail Class 14
・ British Rail Class 140
・ British Rail Class 141
・ British Rail Class 142
・ British Rail Class 143
・ British Rail Class 144
・ British Rail Class 15
・ British Rail Class 150
・ British Rail Class 151
・ British Rail Class 153
・ British Rail Class 155
・ British Rail Class 156
・ British Rail Class 157
・ British Rail Class 158


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British Rail Class 139 : ウィキペディア英語版
British Rail Class 139

British Rail Class 139 is the TOPS classification for PPM60 model lightweight railcars built by Parry People Movers,〔 for use on the British rail network. The class were originally built in 2008 for operation on the Stourbridge Town Branch Line following an extensive trial with a prototype registered as a Class 999 unit.
The first newly constructed Class 139 was shown on 28 June 2008 at the Tyseley Locomotive Works Open Day. The full fleet of two units eventually entered public service on the branchline in June 2009.
==Technology==
The Class 139 units are typical of the Parry People Mover concept, in that they utilise flywheel energy storage as means of smoothing energy demand,〔 to start and propel the vehicle. The flywheel captures braking energy when the brakes are used,〔 and re-uses the energy for acceleration. This eliminates the need for a large diesel engine. The small onboard engine is used to power up the vehicle initially, and to provide power for the onboard systems.

抄文引用元・出典: フリー百科事典『 ウィキペディア(Wikipedia)
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