Appendix V
![](http://upload.wikimedia.org/wikipedia/commons/thumb/b/b1/Rule_Segment_-_Span_-_20px.svg/20px-Rule_Segment_-_Span_-_20px.svg.png)
![](http://upload.wikimedia.org/wikipedia/commons/thumb/d/db/Rule_Segment_-_Diamond_-_4px.svg/5px-Rule_Segment_-_Diamond_-_4px.svg.png)
![](http://upload.wikimedia.org/wikipedia/commons/thumb/b/b1/Rule_Segment_-_Span_-_20px.svg/20px-Rule_Segment_-_Span_-_20px.svg.png)
Calculations for the Plotting of the Phugoid Chart
(The reference numbers correspond to those given in Fig. 42 and the Frontispiece.)
Curve No. 1 is the special case of the straight flight path.
Curves Nos. 2 and 3 are plotted by the approximate method of § 31.
Curve No. 4. (Inflected type.)
For highest and lowest points on the curve, cos θ1 = 1, and
.
For highest and lowest points on the curve, , and
the solution of which gives alternative values of II (compare
§ 28).
H = 25, highest point of curve (already known).
H = 113.5, lowest point on curve (value required).
Point of Inflection.—This is given by § 28, Equation (15).
366