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| The Tail | |
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Another interesting issue is the horizontal tail surface. It is the
part that shows more likeness between the Argentine and the Sovietic
designs. These kind of designs look familiar to all of us, because they are commonly seen in the jet airliners of today; but in 1947, these swept wing, no prop airplanes were so strange as would be for us today to see a disc-shaped airplane ! .
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Now, please see and enlarge the figure to the right. In it are compared
the three airplanes and a distance "d" is indicated. It is the distance
between the horizontal surface and the root chord of the wing, this
difference in height determines the downwash effect of the wing on the
tail. The three airplanes had practically the same distance; in the
IA-33 it caused horrible "stalls", caused by the separation of flow
on the main wing which engulfed the horizontal surface; this led to a
lot of work to solve the new problem. Also, notice the very similar cannon arrangements in the lower part of the fuselage.
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A last comparison can be done here, with the wing planform. Putting them
all together, we see that the IA-33 wing is much closer to that in
the Ta-183 than to the one in MiG-15. It seems to be the part that
was left with less modifications from the initial Tank design.
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I think is good to go into old subjects, because new things can be understood. We can get more close to all those men that, half a century ago, worked a lonely fight in the sky, solving every problem that appeared. All these men were pioneers, and nobody was there to say "no, that is wrong, change it". They had to go into the unknown, even at their own life risk. And they did, and all that came after is History.
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| Comments,suggestions? they are wellcome at |
| fws339@yahoo.com |