As the manuscript was discovered only in 1961 until recently the conception of such stabilizers and their name had been suggested in the 17th century by the Polish-Lithuanian military engineer Kazimierz Siemienowicz.
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Other significant contributions included being project engineer in the development of the Grumman F8F fighter, involvement with short takeoff and landing projects for airline terminals, and work on control systems for rockets, flying boats, Delta wings and powered lift systems.
The P.111 was designed as the smallest airframe which could couple an engine (Rolls-Royce Nene), an ejection seat (Martin Baker), and a delta wing.