pulsejet

/ (ˈpʌlsˌdʒɛt) /

noun

a type of ramjet engine in which air is admitted through movable vanes that are closed by the pressure resulting from each intermittent explosion of the fuel in the combustion chamber, thus causing a pulsating thrustAlso called: pulsejet engine, pulsojet (ˈpʌlsəʊˌdʒɛt)

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Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012