Pigs. 12,13,17,23 N.A.C,A, (Technical Memorandum No. 745 Figure 12.- High-lift devices. The normal profile (a) is fitted with a flap (b), whose effect is amplified "by slots (c). Another form is the split flap (d), and in particular the "Zap" flap (e). The maximum lift coefficients given are only… … km/K WO Figure 23.- Speed of Heinkel He70 **20 compared with different It engine performances at different 1 altitudes with suitable supercharged engines the performance of the HeTO could be raised considerably. The figures are converted according to 320 the ground performances during the D.V.L.…
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