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  2. Rotating detonation engine - Wikipedia

    en.wikipedia.org/wiki/Rotating_detonation_engine

    Fuel and oxidizer are injected into the channel, normally through small holes or slits. A detonation is initiated in the fuel/oxidizer mixture by some form of igniter. After the engine is started, the detonations are self-sustaining. One detonation ignites the fuel/oxidizer mixture, which releases the energy necessary to sustain the detonation.

  3. Pulsejet - Wikipedia

    en.wikipedia.org/wiki/Pulsejet

    A pulsejet engine (or pulse jet) is a type of jet engine in which combustion occurs in pulses.A pulsejet engine can be made with few [1] or no moving parts, [2] [3] [4] and is capable of running statically (that is, it does not need to have air forced into its inlet, typically by forward motion).

  4. Ramjet - Wikipedia

    en.wikipedia.org/wiki/Ramjet

    Above this speed, given sufficient initial flight velocity, a ramjet is self-sustaining. Unless the vehicle drag is extremely high, the engine/airframe combination tends to accelerate to higher and higher flight speeds, substantially increasing the air intake temperature. As this could damage the engine and/or airframe integrity, the fuel ...

  5. Pulse compression detonation system - Wikipedia

    en.wikipedia.org/wiki/Pulse_compression...

    As the piston approaches the TDC the combustible mixture is self-ignited due to the compression of it. Then, the deflagration to the detonation transition occurs in the detonation tube 9. The output of detonation products from the tube 9 happens in a short period of time, when the piston is near the TDC. Then, the process is repeated.

  6. Pulse detonation engine - Wikipedia

    en.wikipedia.org/wiki/Pulse_detonation_engine

    On 26 July 2021 (UTC), Japan's space agency JAXA successfully tested a pulse detonation rocket engine in space on a S-520 sounding rocket flight. [9] The upper stage of the rocket used a rotating detonation engine (RDE) as the main engine and a S-shaped pulse detonating engine was used to de-spin the stage after the main engine burn. PDE ...

  7. Jet engine - Wikipedia

    en.wikipedia.org/wiki/Jet_engine

    The first gas turbine to successfully run self-sustaining was built in 1903 by Norwegian engineer Ægidius Elling. [4] Such engines did not reach manufacture due to issues of safety, reliability, weight and, especially, sustained operation. The first patent for using a gas turbine to power an aircraft was filed in 1921 by Maxime Guillaume.

  8. Shcramjet - Wikipedia

    en.wikipedia.org/wiki/Shcramjet

    A shock-induced combustion ramjet engine (abbreviated as shcramjet; also called oblique detonation wave engine; also called standing oblique detonation ramjet (sodramjet); [1] or simply referred to as shock-ramjet engine) is a concept of air-breathing ramjet engine, proposed to be used for hypersonic and/or single-stage-to-orbit propulsion applications.

  9. Fickett–Jacobs cycle - Wikipedia

    en.wikipedia.org/wiki/Fickett–Jacobs_cycle

    The Fickett–Jacobs (FJ) cycle is based on Chapman–Jouguet (CJ) theory, an approximation for the detonation wave's velocity during a detonation. [1] [2] This cycle is researched for rotating detonation engines (RDE), considered to be more efficient than the classical combustion engines that are based on the Brayton or Humphrey cycles. [3]

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