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Jean-Pierre Petit (born April 5, 1937, Choisy-le-Roi) is a French scientist. He retired as principal investigator at the National Center for Scientific Research (CNRS).

In the early 1980s, Petit authored the science comic series "The Adventures of Archibald Higgins" He explored ufology, the conspiracy theories of September 11; hypersonic military weapons like Aurora, Ayaks, Avangard. He participated in questions of internal French politics, especially the yellow vest movement, which he publicly supported.

Jean-Pierre Petit obtained his engineering degree in 1961 from the French school of aeronautical engineering ENSAE (Supaero). In the 1960s, he worked at a French rocket motor test facility as a test engineer developing the first submarine-launched ballistic missiles. In 1965 he was hired by the Institute of Fluid Mechanics of Marseille (IMFM). He worked as a research engineer conducting research in magnetohydrodynamics (MHD). Petit defended his doctoral thesis at the University of Provence

In 1974, he officially stopped experimental research at MHD and began work at the Marseille Observatory. He was co-director of the Computing Center of the University of Provence from 1977 to 1983, where he developed the CAD software in 1978. He retired from the CNRS in April 2003. In 2007, he founded a non-profit organization called UFO-Science

In 2007, Petit created UFO-Science, a non-profit organization dedicated to the scientific study of the UFO phenomenon. He studied electromagnetic plasma propulsion and shock-wave-free supersonic flight through MHD force field flow control in a new privately funded laboratory called LAMBDA λ (Laboratory for MHD Applications in Temperature Discharge at aerodynamics). He created this concept of "Citizen Research" because he states that the Establishment represented by the official scientific public administration, such as the CNRS and CNES, did not take his ideas into account due to strategic military implications. [non-primary source required] This laboratory has published results since 2008 in the journal Acta Physica Polonica, and in associated presentations at international conferences on MHD.

In topology, Petit worked with Bernard Morin on the eversion of tori and spheres. In the 1980s, he taught sculpture at the Aix-en-Provence art school, where he designed a 5-foot-diameter model of Boy's surface that was displayed in the π room of the Palais de la Découverte for 25 years. He published his first parametric representation, where the meridians are described with ellipses. François Apéry used this representation to construct Boy's implicit surface equation.