Ferris, Richard. [from old catalog] · New York, T. Nelson and sons · leaf 126
mands, working in oppositedirections, and thus doubling the effect of similarailerons on the Farman machine, which can only bepulled downward. The machine is mounted on two wheels under thecentre of the main plane, with a flexible wood skidprojecting forward. Another skid is set under thetail. It… … <
Aeronautics
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