Seria Pod Lupa 11 - Nakajima Ki 43 Hayabusa "Oscar" is a Polish book for modelers about the Japanese fighter Ki 43 Hayabusa. By the end of the 30s, new theories of the use of fighters that originated in Europe did not pass and Japan. In particular, increasing importance was attached to increasing speed and strengthening weapons due to maneuverability. However, the limited choice of engines was an important factor.