The invention relates to an aircraft turboprop engine having two unducted propellers, coaxial about a rotation axis (LL), respectively upstream (12) and downstream (14′), each propeller comprising an annular row of blades, the blades of the downstream propeller (14′) each having a truncated head and each comprising a leading edge (20′) and a trailing edge (22′), the radially external ends (A2, B1) of which are distant from each other and are connected by a terminal edge (21′), characterised in that the terminal edge (21′) of each blade of the downstream propeller (14′) has, at at least two points, tangents in a meridian plane having different slopes, the upstream end (A) of the terminal edge defining a maximum radial dimension (R2) of the blade and its downstream end (B1) defining a minimum radial dimension (R3) of the terminal edge.


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    Titel :

    Aircraft turboprop engine comprising two coaxial propellers



    Erscheinungsdatum :

    2017-10-03


    Medientyp :

    Patent


    Format :

    Elektronische Ressource


    Sprache :

    Englisch


    Klassifikation :

    IPC:    F01D Strömungsmaschinen [Kraft- und Arbeitsmaschinen oder Kraftmaschinen], z.B. Dampfturbinen , NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES / B64C AEROPLANES , Flugzeuge / F02K JET-PROPULSION PLANTS , Strahltriebwerke



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    ANTHONY PASCAL ELOI LOUET / CLEMENT MARCEL MAURICE DEJEU / JONATHAN EVERT VLASTUIN | Europäisches Patentamt | 2020

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    AIRCRAFT TURBOPROP ENGINE COMPRISING TWO COAXIAL PROPELLERS

    LOUET ANTHONY PASCAL ELOI / DEJEU CLEMENT MARCEL MAURICE / VLASTUIN JONATHAN EVERT | Europäisches Patentamt | 2016

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    Characteristics of Propellers for Turboprop Airplanes

    Kasley, Jack H. / Mergen, Joseph M. | SAE Technical Papers | 1952


    Characteristics of propellers for turboprop airplanes

    Mergen, J.M. / Kasley, J.H. | Engineering Index Backfile | 1952


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