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Aviation History
1942
1942 - 1341.PDF
JUNE 25TH, 1942 FLIGHT 039 THE DORNIER DO. 217.E In conclusion a brief mention may be made of the controls of the Do. 217.E. The ailerons are of the slotted type and are fitted with tabs. The flaps are of the split type, but in the "down" posi - tion a shaped slot is left between the top surface of the flap and the fixed portion of the wing. The correct shaping of the slot thus formed is ensured by setting the flap hinges rela tively low. The flaps are electric ally operated via a motor and a screw jack. The flap operating loads are reduced by a spring. Each elevator has two tabs, one for balance and trimming, and the other for automatic recovery from dives with diving brakes. This latter is electrically operated, and the arrange ment is considerably simpler than the hydraulic system used on the Ju. 88, which was described in Flight of December 5th, 1940. On the Do. 217.E, a solenoid plunger operates the control rod, a spring being incorporated in the unit for returning the control rod. The solenoid windings are connected to the diving brake circuit, and as the diving brakes are extended on Beauty is not a prominent feature of the Do. 217.E. All four members of the crew are housed in the cabin ahead of the wing. Three-view general arrangement drawings of the Do. 217.E. entry into a dive, the solenoid plunger forces the elevator tab upwards, thus causing the main eleva tor to move down and starting the dive. When recovering from the dive by use of the automatic control, operation of a switch in the cockpit breaks the solenoid circuit, thus allowing the control rod spring to depress the tab, raise the elevator and starting the pull-out. The end of a Dornier 217. This machine was brought down in England some months ago, and, as will be seen, was not too badly damaged. This tail did not have the dive brake which is fitted on some examples.
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