The Zero's weight and engine, compared with the heavier Fulmar and Wildcat, show the design choices available to each navy. Japan gained speed and range through lightness, but could not readily add strength or protection without more powerful engines and the industrial system to produce them. The heavier Wildcat reached roughly the same top speed with a 1,200-horsepower engine, illustrating the alternative path greater engine capacity made possible. The Zero therefore captures both the achievement and the constraint of Japanese naval aviation in 1941.
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The Zero's performance came with an industrial limit
The Zero represented the culmination of Japan's pursuit of long range and speed, but its lightweight design also reflected limited engine power and industrial capacity.