United States. National Advisory Committee for Aeronautics, United States. National Aeronautics and Space Administration · Washington : G.P.O. · leaf 696
Sec//on /J-S … ^3 Yid. 6—Timer: Principal section, parallel to axis. Fig. 7.—Timer: Section showing the segment with contact brush (at the top of the figure), and the rotary spark gap for locatingthe angle of ignition. A schematic diagram of the apparatus is given in figure 8. The actual arrangement in…
Aeronautics
Internet Archive · Gerstein Library, University of Toronto · Public Domain Mark 1.0. Free to use for anything.
