Development of an aerodynamically neutral pantograph - part 1 (IM-DA-293)

The variable parameter Brecknell, Willis Highspeed Pantograph has been developed jointly between the Dynamics Section and Brecknell, Willis & Co Ltd., of Chard, Somerset, for use in the Dynamics Section's Improved Current Collection Project, (Fig 1 shows a line drawing). In Aug 77 as part of comparative tests of...