From ADS-4 apps.dtic.mil.
Prerequisites
You need to have completed Aircraft Icing Handbook Energy Balance Examples.
Introduction
We will review "Engineering Summary of Airframe Icing Technical Data", ADS-4 apps.dtic.mil, as the anti-ice examples are more detailed than those in the "Aircraft Icing Handbook", DOT/FAA/CT-88/8-1 apps.dtic.mil.
We will also look at "Ice, Frost, and Rain Protection", SAE AIR1168/4 sae.org, for practical guidance for analysis.
The ADS-4 and SAE AIR 1168/4 analysis methods use nomographs to implement graphical solutions. We will not be using the nomographs. While the notation is different, the analysis method from ADS-4 is very similar to the Standard Computational Model in the Aircraft Icing Handbook Merged Sections which we will use here.
The energy balance equation is:
Q"Source + Q"Sink = 0
Define Q"Sink by:
Q"Sink = Q"conv + Q"DropWarm + Q"Evap
read moreDefine Q"Source …