A cylindrically-shaped hybrid rocket engine solid fuel grain defines an axial combustion port. A fuel grain material comprises a compounded blend of thermoplastic fuel and aluminum. The fuel grain comprises fused stack layers, each layer comprising a plurality of fused abutting concentric beaded structures arrayed to define the combustion port; the port exhibits a rifling pattern or rifling inducing geometry along the port wall. When an oxidizer is introduced into the combustion port combustion occurs along the exposed port wall. Each beaded structure defines a geometry that increases the combustion surface area while inducing a vortex flow of oxidizer and fuel gas. As each layer ablates, an abutting layer exhibiting a similar geometry, is revealed, undergoes a gas phase change, and ablates. This process repeats and persists until oxidizer flow is terminated or the fuel grain material is exhausted. The fuel grain may be manufactured by an additive manufacturing process.


    Zugriff

    Download


    Exportieren, teilen und zitieren



    Titel :

    Persistent vortex generating high regression rate solid fuel grain for a hybrid rocket engine


    Beteiligte:
    JONES RONALD D (Autor:in)

    Erscheinungsdatum :

    2019-06-04


    Medientyp :

    Patent


    Format :

    Elektronische Ressource


    Sprache :

    Englisch


    Klassifikation :

    IPC:    F02K JET-PROPULSION PLANTS , Strahltriebwerke / B33Y ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING , Additive (generative) Fertigung, d. h. die Herstellung von dreidimensionalen [3D] Bauteilen durch additive Abscheidung, additive Agglomeration oder additive Schichtung, z. B. durch 3D- Drucken, Stereolithografie oder selektives Lasersintern / B64G Raumfahrt , COSMONAUTICS / C06B EXPLOSIVE OR THERMIC COMPOSITIONS , Sprengstoffe oder thermische Gemische




    Solid-Fuel Regression Rate Behavior of Vortex Hybrid Rocket Engines

    William H. Knuth / Martin J. Chiaverini / J. Arthur Sauer et al. | AIAA | 2002


    Solid-fuel regression rate and combustion behavior of vortex hybrid rocket engines

    Knuth, William / Chiaverini, Martin / Gramer, Daniel et al. | AIAA | 1999


    Solid Fuel Regression Measurements Rate Using an Optical Hybrid Rocket Engine

    Over, Dillon / Ianuzzi, Makayla / Moore, Jeffrey D. et al. | AIAA | 2019


    SOLID FUEL REGRESSION MEASUREMENTS RATE USING AN OPTICAL HYBRID ROCKET ENGINE

    Over, Dillon / lanuzz, Makayla / Moore, Jeffrey D. et al. | TIBKAT | 2019