Design and Development
Following testing of the Yak-15U, Yakolev ordered a major redesign, incorporating a nosewheel, while putting aside commonality with the Yak-3. In addition, the main gear had to be redesigned to place the wheels behind the aircraft's center of gravity. The main gear were moved behind the front spar, and when retracted they filled most of the space between the spars. This caused a major redesign of the fuel tanks and reduced their capacity to just 680 liters (150 gallons). This necessitated the addition of two 200 liter (44 gallon) jettisonable tanks, which hung under the tip of each wing. The addition of the tip tanks required a redesign of the structure of the wing so that the aircraft could still maintain a load bearing of 12g. The vertical stabilizer was enlarged and a periscope was also added above the windscreen on most series aircraft. Armament, systems, and equipment were virtually unchanged.
Read more about this topic: Yakovlev Yak-17
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