B - Operations – Transporting – 64 – D
Patent
B - Operations, Transporting
64
D
B64D 29/06 (2006.01)
Patent
CA 2564619
The inventive turboprop engine consists of a power jet which is mounted coaxially to the engine axis (X-X'), comprises a fan case and a gas ejecting system provided with two afterbody half-cowlings (10b) each of which is pivotable around an axis (A¿2?) between open and closed positions, wherein said half-cowlings are connected to the downstream of said fan case through a "V-blade/V-groove" system. In a first embodiment, the pivot axes (A¿2?) make an angle .alpha.> 3· to the engine axis (X, X') and a joint plane (Z¿2?-Z¿2? ) between said afterbody half-cowlings and the downstream of said fan case makes to the plane (Y, Y') perpendicular to the engine axis (X, X') an angle .beta.¿2? in such a way that .alpha.¿2?-.beta.¿2?<=3·. In the other embodiment, said axes are converged to each other in a downstream direction.
Le groupe turbopropulseur comprend, coaxiaux à un axe moteur (X-X'), un réacteur pourvu d'un carter de soufflante et un système d'éjection des gaz des gaz incluant deux demi-capotages d'arrière-corps (l0b) articulés chacun autour d'un axe (A2) entre une position ouverte et une position fermée dans laquelle ils viennent se relier à l'extrémité aval dudit carter de soufflante via un système "V-blade/V-groove". Selon l'invention, les axes d'articulation (A2) font un angle .alpha.2>3~ avec l'axe moteur (X-X') et le plan de jonction (Z2- Z2 ') entre lesdits demi-capotages d'arrière-corps et l'extrémité aval dudit carter de soufflante fait, avec le plan (Y-Y') perpendiculaire à l' axe moteur (X-X') , un angle .beta.2 tel que .alpha.2-.beta.2 <= 3~. Selon un deuxième aspect de l~invention, lesdites axes convergent l~un vers l~autre en direction de l~aval.
Fournier Alain
Laboure Bernard
Standish Robert
Aircelle
Goudreau Gage Dubuc
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