𝐍-𝟐𝟎 𝐀𝐢𝐠𝐮𝐢𝐥𝐥𝐨𝐧

The Federal Aircraft Plant Emmen developed the N-20 Aiguillon fighter aircraft from 1948 to 1952. In May 1948, the Sulzer Brothers AG also received the order to develop a swiss mamba sm-01 engine for the N-20 aircraft. In July 1949, the military profile of the weapons chief of the aviators and anti-aircraft troops was available. The specifications seem utopian today. The weapon system should be suitable for air defense and ground combat. The design contained numerous innovations: delta wing, four engines in the flow-through wing, afterburner, thrust reverser, landing brake parachute, adjustable wing nose, weapon tray as an interchangeable set, detachable, air-conditioned and airtight pilot's cabin with cabin and pilot parachutes. Cannons, unguided missiles and bombs were provided as armament. A top speed in the supersonic range (1200 km/h) should be achieved.
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Shortly before the first flight, Federal Councilor Karl Kobelt prohibited in January 1953 the roll tests and sealed the project termination. The engines developed in Switzerland did not achieve the necessary performance. A major change to the design with two British Armstrong-Siddeley Sapphire engines would have been necessary. The active P-16 lobby from Eastern Switzerland participated in the background at the funeral of the N-20 project.
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The actual prototype N-20.10 Aiguillon (sting) was ready in 1952, during the taxiing tests from January 1953 test pilot Mathez carried out a short jump start. However, since the federal parliament canceled the loans for the entire engine development on March 14, 1952, the N-20 program was canceled and the aircraft was banned from take-off in November 1953.
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Text-Source: Retired funds of the Swiss Air Force