Reminder: Jean-Pierre Petit was Director of Research at CNRS and has developed the principle of parietal MHD converter. It is also well known as a ufologist: UFOs and American secret weapons: The extraordinary testimony of a scientific or The mystery of ummites: A science came from another planet?. Cartoonist and writer, he popularized his research through the comic notably with "The Adventures of Archibald Higgins". Now thanks to this comic that helped me to understand, I will try to speak to the MHD. Anselm goes on holiday to the seaside and it creates a small jetty. Unfortunately the passing boats destroy ever with the waves that form, the latter. Gradually he invented and developed the MHD to remove the bow wave. He considered this use on boats. Indeed I quote the comic "ship has a friction drag (resistance force to the advancement due to the friction of the water on the hull). The presence of wavefront changes the pressure distribution Profile This results in a wave drag that is growing very rapidly with speed. It is the latter that limits the speed of the boats. " If we put a huge magnetic field, the device is surrounded by a field of Laplace forces, removes the bow wave and uses it to propel themselves. The ship will stop making waves. It is the same for a sub that would become very fast and totally silent. Regarding aircraft, the problem is the same. When flying at above the speed of sound, it creates shock waves and faces not water but air. This produces the famous Bang "sound barrier". From Mach 2, the plane encounters a wall of heat. It is therefore necessary to suck air and with a magnetic field, creating a depression on the top and an overpressure below. The machine will then move at incredible speed, in silence and make breathtaking maneuvers. Does it remind you of anything? Think about the "wall of silence". According to Small (but really under protest), the US military would have the MHD especially with torpedoes, disc-shaped drones and airplanes secrets like the hypothetical outcome of B2 Aurora program. Anyway good extension BD although the subject is not in the details of operation and the very obvious mathematical equations to understand unless astro physicist. The important thing is to know the principle and the opportunities that this will allow in the future. Anyway from what I understand to fly such an aircraft would require almost the power of a power plant. Adanson Marco.
