Military aeroplanes, simplified, enlarged; an explanatory consideration of their characteristics, performances, construction, maintenance, and operation, specifically arranged for the use of aviators and students . he higher resistance onthis wing tends to make the machine turn into the relative wind. Aside puff will lift up the inside wing that it first attacks and then throwthe machine sideways — after which the dihedral causes a greater 164 lift on the low wing, tending to bring the machine back to an evenkeel. This answer to a side puff, followed by the righting effect, isal ways charactei
Military aeroplanes, simplified, enlarged; an explanatory consideration of their characteristics, performances, construction, maintenance, and operation, specifically arranged for the use of aviators and students . he higher resistance onthis wing tends to make the machine turn into the relative wind. Aside puff will lift up the inside wing that it first attacks and then throwthe machine sideways — after which the dihedral causes a greater 164 lift on the low wing, tending to bring the machine back to an evenkeel. This answer to a side puff, followed by the righting effect, isal ways characteiistic of a dihedral wing, and is uncomfortable. 2. By a Retreating Wing Shape. The shape of wing in the form of a retreat, as indicated, pivesclearly a difference in projected entering edge and shape of wing, which,without quite as much sensitiveness to sharp side puffs, at the sametime gives considerable difference in lift and strong recovery. Likethe dihedral, however, the difference in wing, laterally, causes a dif-ference in resistance, tending to turn the machine into the side wind,and the great leverage of the difference in lift and resistance about thec. g. makes both systems exceedingly , Airflow I I \ \ \ \ \ Span A. When the air flow is side ways,due io the refreafing A lifts moreihan Span B Retreating Wing Effect. 3. By the Double High Fin System. As indicated (diagram p. 165), the rudder is placed high and a finabove the c. g. is placed forward. The action of a side wind on thissystem tends to roll the machine up on the inside wing, but while thedihedral and retreat are exceedingly sensitive to the least sidewaysdeviation of the air flow from its direction along the axis of the ma-chine, fins of this class require a most pronounced sideways attack ofthe air before any considerable effect is created. Ordinary deviationsof the wind direction in flight (which would cause a dihedral or retreatto roll the machine) have very little effect on this
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectairplanes, bookyear19
