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<strong>Mig</strong>-<strong>21</strong>-FM-Identification-Rev. 14<br />
produce the following comparison table:<br />
Mach<br />
Ps ft/s<br />
(figure)<br />
Ps ft/s<br />
(computed)<br />
Difference<br />
(%)<br />
0.50 357 311 -13%<br />
0.60 437 380 -13%<br />
0.70 490 433 -12%<br />
0.80 518 458 -12%<br />
0.90 490 362 -26%<br />
1.00 263 132 -50%<br />
The difference of 12-13% measured from M0.5 to M0.8 is not possible to explain for me without<br />
imagining an aerodynamic behavior really far away the one of <strong>Mig</strong>-<strong>21</strong>M or <strong>Mig</strong>-<strong>21</strong>bis, so I can only<br />
have doubt about the accuracy of the figure Rys.11.1<br />
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