"It is observed that severe icing is not predicted over large areas."
Introduction
This is one of the shortest post that I have written, as it is more outlining a mystery, that I have not yet sorted out, than a full review.
Summary
In Conclusions of the Meteorology of Icing Clouds Thread, there is a time-line of how the NACA understanding of the icing conditions evolved, focussing on liquid water content (LWC) values.
In Canada, icing research was also being performed by the National Aeronautical Establishment (NAE).
Here, we will compare what was published in the University of Michigan Airplane Icing Information Course, in 1953, to NACA data and the later Appendix C.
Discussion
Smith, E. L.: "The Design of Fluid Anti-Icing Systems" (NAE) 1
read more3.3 Meteorological Conditions
Figure 15 presents the meteorological design requirements proposed by the Low Temperature Laboratory of the N.A.E. It is observed …