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The ailerons, which are adapted to many of our modern aeroplanes, are really balancing flaps, actuated by a control lever at the right side of the pilot's seat, and the principle on which they are worked is very similar to that employed in the warp system of lateral stability.
At once the riding became easier, for the moment a gust of wind hit the machine on one side, the elevators and ailerons shifted and counteracted its uneven effect. After a while Bob turned slightly to the eastward, and about mid-afternoon they came in sight of Colon, the Atlantic terminal city of the great Canal.
Push the joy-stick forward, the elevators are turned down, and the machine goes into a dive for the ground. In making many maneuvers all three controls, rudder, ailerons, and elevators, are used at once and the pilot feels his way with the machine, guiding it with the stick and the rudder-bar.
Reference has been previously made to the FUSELAGE, SKIDS, AILERONS, WARPING CONTROLS, ELEVATING PLANES, and RUDDER of the various forms of air-craft. We have also spoken of the GLIDING ANGLE of a machine. Frequently a pilot makes his machine dive at a much steeper gradient than is given by its natural gliding angle.
At close to two thousand feet he brought the Sky-Bird quickly and smoothly upward until she stood almost on her tail end. Then Tom threw the elevators and ailerons hard up, and held them there. They were going at a rate of close to a hundred miles an hour at the moment, and their velocity brought them around in a pretty loop.
The early Rumpler machines suffered from sluggish control, but in the later types this defect has been overcome. In the early models the wings were flexible, but in the present craft they are rigid, although fitted with tips or ailerons.
You see, the ailerons never leave their sections and in the planes not a wire is changed. The outriggers fold, keeping them in pairs together, each piece is bent, not buckled, and can be straightened good as new in case of a disarrangement." The manager went over the entire machine in a speedy but expert way.
The piston is connected to a toothed rack, as you will note, causing this to turn a sector engaging it. The control wires connect with this sector." "Very clever arrangement; but I don't quite see how, in banking, the ailerons can be brought back automatically to a neutral position as soon as the turn has been completed," ventured Mr. Giddings.
"The chassis needs truing up, the equilibrator has sagged out of plumb, and the ailerons have got to be readjusted, but it's only a matter of a few days at the outside before she'll be in shape. "The main thing is the engine, and so far as I can judge, that's pretty nearly O. K. The magneto may have to be gone over, but that's a mere trifle.
The machine no early and experimental model, such as were used in the first days of flying, from 1900 to 1915, but one of the perfected and self-balancing types developed about 1920, the year when the Great Death had struck the world responded nobly to his skill and care. From her landing-skids to the farthest tip of her ailerons she seemed alive, instinct with conscious and eager intelligence.
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