Archive image from page 84 of Discovery Discovery discovery0304londuoft Year: DISCOVERY 75 from the cable. He eliminated those noises by means of a small receiving frame placed near the magnetos. This small frame was so wound that, when it was placed in series with the more distant receiving frame, the currents induced in these two frames by the variable magnetic fields of the magnetos were annulled. The receiving frames are placed on the aeroplane much as they would be on the ship, and, to perfect reception through the telephones, the tuning, as in the case of the apparatus on board ships
Archive image from page 84 of Discovery Discovery discovery0304londuoft Year: DISCOVERY 75 from the cable. He eliminated those noises by means of a small receiving frame placed near the magnetos. This small frame was so wound that, when it was placed in series with the more distant receiving frame, the currents induced in these two frames by the variable magnetic fields of the magnetos were annulled. The receiving frames are placed on the aeroplane much as they would be on the ship, and, to perfect reception through the telephones, the tuning, as in the case of the apparatus on board ships at sea, can be rendered sharper by mounting the apparatus on a resonator. When the aeroplane or airship has its Fig. 2.—VERTICAI, OSCILLATING 1 .<AM:: MMBIXED WITH HORIZDNT.\L I'RAME. This suspension, with a universal joint, enables an obser\'er to determine the position, as regards direction, of the source from which the electric waves emanate. axis paraDel to the guiding-cable the longitudinal frame receives the maximum of waves, and the trans- verse the minimum. The opposite is true when the aeroplane is moving at right angles to the cable, that is to say, the longitudinal frame receives less and less as the aeroplane inclines towards the guiding- cable and none at all when the machine becomes perpendicular to it, and the transverse receives more and more as the axis of the aeroplane tends to be at right angles to the guiding-cable and a maximum when it is travelling perpendicularly to it. The longitudinal and transversal frames may be replaced bj- two vertical frames placed at 45 to the axis of the fuselage of the aeroplane. The horizontal frame receives when the aeroplane is influenced by the variable magnetic field of the guiding-cable, that is to say, when it is either near, or at a certain distance from, the cable, but reception is annulled with great clear- ness when the aeroplane passes right over the hne. IncUnation towards the left or right is obtained by pl
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