ON NON-STEADY TRANSONIC FLOWS PAST SYMMETRICAL AIRFOILS PartⅡ:APPROXIMATE SOLUTION

摘要

The extreme complication offered by the study of non - stationary transonic flow, even if carried out according to the hodographic method (as it will be apparent from the 1st part hereof, causes it to appear not altogether useless to seek a solution based on the application of rough simplifications, which however in similar problems have afforded results satisfactory enough, that is to say not much different from those given by more accurate methods and by experiments. For this reason, the problem considered in the 1st section will be again examined, and for its study there will be used a method similar to that followed by John R. Spreiter and Alberta Y. Alksne [l] for the corresponding problem in stationary con-ditions; The extreme complication offered by the study of non - stationary transonic flow, even if carried out according to the hodographic method (as it will be apparent from the 1st part hereof, causes it to appear not altogether useless to seek a solution based on the application of rough simplifications, which however in similar problems have afforded results satisfactory enough, that is to say not much different from those given by more accurate methods and by experiments. For this reason, the problem considered in the 1st section will be again examined, and for its study there will be used a method similar to that followed by John R. Spreiter and Alberta Y. Alksne [l] for the corresponding problem in stationary conditions;