e/Pulse detonation engine

New Query

Information
has glosseng: A pulse detonation engine, or "PDE", is a type of propulsion system that utilizes 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.
lexicalizationeng: Pulse Detonation Engine
instance of(noun) the engine that powers and aircraft
aircraft engine
Meaning
French
has glossfra: Le moteur à ondes de détonation pulsées ou moteur à détonation pulsée (ou PDE en anglais pour Pulsed Detonation Engine) est un système de propulsion qui peut servir pour laéronautique ou lastronautique.
lexicalizationfra: Moteur a ondes de detonation pulsees
lexicalizationfra: Moteur À Ondes De Détonation Pulsées
Italian
has glossita: Un motore ad onda di detonazione (in inglese pulse-detonation engine o "PDE"), è un tipo di motore aeronautico che può essere impiegato in un vasto campo di velocità che spaziano dal regime subsonico a quello ipersonico. In teoria i motori PDE sono in grado di raggiungere unefficienza superiore a quella di altri modelli e in più hanno molte meno parti in movimento. Lefficienza nello sfruttamento dellenergia del combustibile in un motore a onda di detonazione, può superare persino quella di un turbogetto o di un turbofan. Tuttavia, limpossibilità di inserire una ventola tangenziale in un PDE (il metodo usato dai turbofan per aumentare lefficienza complessiva migliorando il rapporto di diluizione o, in inglese, bypass ratio - BPR), limita lutilizzo dei motori ad onda di detonazione alle sole applicazioni dove i turbofan sono poco pratici o di impossibile adozione.
lexicalizationita: motore ad onda di detonazione
Malay (macrolanguage)
has glossmsa: Enjin ledakan denyut (pulse detonation engine – PED) atau juga dikenali sebagai "enjin gelombang ledakan berdenyut" (pulsed detonation wave engine) ialah sejenis sistem perejangan udara yang boleh beroperasi pada kelajuan subsonik hingga hipersonik. Secara teori reka bentuk PDE mampu menghasilkan enjin dengan keberkesanan pembakaran bahan api lebih tinggi berbanding reka bentuk yang lain, dengan sedikit bahagian bergerak. Keberkesanan pembakaran PDE mampu melepasi turbojet dan turbofan. Bagaimanapun, mustahil menambah kipas pintasan pada PDE (yang meningkatkan keberkesanan keseluruhan turbofan melepasi maksimum secara teori bagi enjin tanpa pintasan) menghadkan daya saing PDE kepada penggunaan di mana turbofan adalah tidak praktikal atau mustahil.
lexicalizationmsa: Enjin ledakan denyut
Slovak
has glossslk: Pulzačný motor alebo pulzný motor alebo oscilačný motor je bezkompresorový reaktívny motor využívajúci k svojej činnosti rezonančné frekvencie plynu vo výstupnej tryske. Vplyvom rezonancie vznikajú vo výstupnej tryske tlakové a podtlakové impulzy (z toho názov pulzačný), ktoré pri vzniku podtlaku zabezpečia nasatie vzduchu do spaľovacej komory. Pri pretlaku dochádza k zapáleniu zmesi a následnému výtoku plynov do trysky motora. Takýto typ motora bol prvýkrát sérivo použitý v nemeckých raketách V-1 počas Druhej svetovej vojny.
lexicalizationslk: Pulzačný motor
Media
media:imgDtd pde.jpg
media:imgOnde de choc 1.jpg
media:imgPDE LongEZ AFRL.jpg
media:imgPrincipe pde.jpg
media:imgPropagation odc pde.jpg
media:imgStruct pression pde.jpg
media:imgUTA 35Hz PDE.PNG

Query

Word: (case sensitive)
Language: (ISO 639-3 code, e.g. "eng" for English)


Lexvo © 2008-2025 Gerard de Melo.   Contact   Legal Information / Imprint