(Svar sendes til dk.videnskab )
Hvem her har leget med ionvindsdrev?
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Som de skriver kan den "nye" effektiv fremdrifts/opdriftsform anvendes i mindre fartøjer:
Massachusetts Institute of Technology (2013, April 3). Ionic thrusters generate efficient propulsion in air. ScienceDaily:
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Citat: "... This phenomenon, called electrohydrodynamic thrust -- or, more colloquially, "ionic wind" -- was first identified in the 1960s. Since then, ionic wind has largely been limited to science-fair projects and basement experiments; hobbyists have posted hundreds of how-to videos on building "ionocrafts" -- lightweight vehicles made of balsa wood, aluminum foil and wire -- that lift off and hover with increased voltage. ... Now researchers at MIT have run their own experiments and found that ionic thrusters may be a far more efficient source of propulsion than conventional jet engines. [Den store overraskelse:] In their experiments, they found that ionic wind produces 110 newtons of thrust per kilowatt, compared with a jet engine's 2 newtons per kilowatt. ... Steven Barrett, an assistant professor of aeronautics and astronautics at MIT, envisions that ionic wind may be used as a propulsion system for small, lightweight aircraft. In addition to their relatively high efficiency, ionic thrusters are silent, and invisible in infrared, as they give off no heat -- ideal traits, he says, for a surveillance vehicle. ... A basic ionic thruster consists of three parts: a very thin copper electrode, called an emitter; a thicker tube of aluminum, known as a collector; and the air gap in between. ... As this cloud of ions moves toward the collector, it collides with surrounding neutral air molecules, pushing them along and creating a wind, or thrust. ... Barrett acknowledges that there is one big obstacle to ionic wind propulsion: thrust density, or the amount of thrust produced per given area. ..."
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Hvorfor laver Danmarks Radio ikke en ny "Jørgen Klevin" serie - første udsendelse kunne indledes med: "Og i dag skal vi lave et "Warp-Drive" af kobbertråd, aluminiumsfolie, balsatræ, sekundlim og en gammel monitor" - PS: Ment i sjov, da højspænding kan være farlig, afhængig af mulig høj strømpuls:
Apropos - dog ionvindsdrev giver IKKE antigravitation!:
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Det der kaldes "magnetisk tråd" er IKKE magnetisk tråd. Det er blot almindelig lakisoleret kobbertråd, som også anvendes til at bevikle elektriske transformatorer. Her af navnet "magnetic wire".
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Citat: "...16) Strip the end of this wire (-) and solder it to the end of 70 cm length of 0.1 mm [38 AWG] insulated copper magnet wire.... The UFO-Lifter v1.0 works very well with a simple 30KV power supply..."
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Conseils pour alimenter un Lifter par Claude Dupré ( France ):
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Citat: "... I have enclosed an explanatory document on how to use the high voltage from a monitor to supply power to a Lifter.
Be cautious around high voltage! Share your experiences.
Cordial greetings, Claude Dupré
Some advices for providing power to a Lifter : ..."
/Glenn