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Bullet (interurban)
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The Bullet was a high-speed electric multiple-unit passenger car produced by the J. G. Brill Company in Philadelphia for the Philadelphia and Western Railroad (P&W) in 1931, and then similar, somewhat smaller single-unit, single-end versions were built for the Fonda, Johnstown and Gloversville Railroad in 1932. Few were sold because of the Great Depression and the public transport decline in the 1930s.〔 However, some of the P&W cars ran for nearly 60 years.
==The First Railroad car in a Wind Tunnel==
The Bullets were a result of a broad research program. This program was led by Philadelphia and Western's vice-chairman W. L. Butler, who had been largely responsible for development of the Cincinnati and Lake Erie Railroad's Red Devil car's design, in collaboration with the J. G. Brill Company. Unlike the Red Devils, the Bullets had all-aluminum bodies. Their design was improved over earlier styles of railcars after a lot of wind tunnel research – the first in the railway industry – the Bullet was streamlined to minimize the air resistance. According to Felix W. Pawlowski of University of Michigan, this would save 40% or more of the energy required by the conventional type of passenger car at speeds in excess of . They also developed an improved low-level bogie (truck) design, and the Bullets could run as multiple-unit trains. Like the Red Devils, the Bullets had four motors. The Bullets as built for the P&W were longer at and a bit heavier at , but with only about half the weight as typical railcars of that time.〔
The P&W cars operated exclusively off of third rail, while the FJ&G cars used 600v overhead wire and trolley poles with trolley wheels.
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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