Yak-11U
In 1951, Yakovlev revised the design of the Yak-11, adding a retractable tricycle landing gear, with two variants proposed, the Yak-11U basic trainer and Yak-11T proficiency trainer, which carried similar equipment to contemporary jet fighters. The new aircraft had reduced fuel capacity and was unsuitable for operations on rough or snow covered runways, and so was rejected for Soviet service, although a few examples were built in Czechoslovakia as the C-11U.
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