Pulse detonation engine
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 In-flight picture of the pulsed detonation powered, and heavily modified, Rutan Long-EZ on January 31, 2008. |
A pulse detonation engine, or "PDE", is a type of propulsion system that uses detonation waves to combust the fuel and oxidizer mixture. The engine is pulsed because the mixture must be renewed in the combustion chamber between each detonation wave initiated by an ignition source. Theoretically, a PDE can operate from subsonic up to a hypersonic flight speed of roughly Mach 5. An ideal PDE design can have a thermodynamic efficiency higher than other designs like turbojets and turbofans because a detonation wave rapidly compresses the mixture and adds heat at constant volume. Consequently, moving parts like compressor spools are not necessarily required in the engine, which could significantly reduce overall weight and cost. PDEs have been considered for propulsion for over 70 years. Key issues for further development include fast and efficient mixing of the fuel and oxidizer, the prevention of autoignition, and integration with an inlet and nozzle.
- See also: Wikipedia
- Related: Scramjet, Nuclear pulse propulsion
| Innovative Scientific Solutions Inc. Innovative Scientific Solutions Inc. www.innssi.com - Web |
| Pulse Detonation Engines Pulse Detonation Engines www.aardvark.co.nz/pjet/pde.shtml - Web |
| Popular Science Popular Science www.popsci.com/.../e46d5b4a1db84010vgnvcm1000004eecbccdrcrd.html - Web |
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| 1952 Pulse Detonation Jet Propulsion Patent by Wil... 1952 Pulse Detonation Jet Propulsion Patent by William Bollay www.google.com/.../patents?vid=USPAT2942412&id=k4tFAAAAEBAJ&dq=bollay - Web |
| Apparatus powered using laser-supplied energy, US ... Apparatus powered using laser-supplied energy, US patent Issued on August 6, 1996 Boyd B. Bushman www.patentstorm.us/patents/5542247.html - Web |
| (Video) The high detonation temperature inside the... (Video) The high detonation temperature inside the tube of an experimental PDE causes the seals to heat up and catch fire. www.youtube.com/watch?v=GqLOI3h0DC8 - Web |
| (Video) An experimental PDE operating with a deton... (Video) An experimental PDE operating with a detonation frequency of 1 Hz where the pulses are clearly defined. www.youtube.com/watch?v=IBjLx2AvxrM - Web |
| (Video) An experimental PDE operating with a deton... (Video) An experimental PDE operating with a detonation frequency of 25 Hz. www.youtube.com/watch?v=rYxsilgRxi4 - Web |
| 2-D pulse-detonation engine simulation 2-D pulse-detonation engine simulation es.youtube.com/watch?v=mSiER26ZHBg - Web |
| Fox News report on the Blackswift Fox News report on the Blackswift www.foxnews.com/.../index.html?playerId=videolandingpage&streamingFormat=FLASH&referralObject=1791927&referralPlaylistId=e059f7416cd3e6a978256d927c7bb152d9988581 - Web |
| DARPA May 2009 notes on PDE DARPA May 2009 notes on PDE www.defenselink.mil/.../DARPA_PB10_RDTE-05-04-09.pdf - Web |
