Path: ...!eternal-september.org!feeder3.eternal-september.org!news.eternal-september.org!.POSTED!not-for-mail From: Julieta Shem Newsgroups: sci.misc Subject: Re: air-breathing plasma engines Date: Sat, 09 Mar 2024 13:49:51 -0300 Organization: A noiseless patient Spider Lines: 24 Message-ID: <871q8js634.fsf@yaxenu.org> References: MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: 8bit Injection-Info: dont-email.me; posting-host="d3697e664b2fe3b42eda67e412b665fb"; logging-data="2549276"; mail-complaints-to="abuse@eternal-september.org"; posting-account="U2FsdGVkX18YnPdJRa5/B3HUKUjjTNTsx+QOSNLPC60=" Cancel-Lock: sha1:TK0trz/35isTUDOGSNckbHI3uc4= sha1:f6z/DSKa9ZCOUSCMdLMWFQDplFc= Bytes: 1955 JAB writes: > An engine that can conjure thrust from thin air? We speak to the > designer > > Interview Will satellites be capable of generating their own thrust > with propellant created out of thin air one day? Scientists at the > George Washington University (GWU) and Princeton Plasma Physics > Laboratory reckon so. > > https://www.theregister.com/2024/03/09/darpa_apeb_project_interview/ --8<---------------cut here---------------start------------->8--- The Reg: Can you explain how APEBs work? ​​A.T.: Air goes inside an engine and there's an electron gun that emits high energy electrons. Those high energy electrons interact with the air and ionize the particles; it's a chain reaction called ionization. Then they will be excited and emit light that glows. Plasma is created from the charges, the positive ions and negative electrons. Now you have electromagnetic fields, and you have a perpendicular magnetic field. The charged particles get accelerated by the Lorentz force to generate thrust. --8<---------------cut here---------------end--------------->8---