at of the wing section. It is not so important, indeed, because the tail plane area is smaller than the wing area. That is one reason, we think, why almost no experimental work is extant on this subject, which is to be regretted, for this problem can only be solved by a great many tests. Figure 3,… … Fig-3 Angfe of attack oftaifpfane. efficients. We have repeatedly mentioned that at small angles the lift is proportional to the angle and the lift coefficient is about CL»a • —(of in degrees) A change of the setting of the elevator changes the effective angle of attack. If j8 is the angle of…
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