Aircraft propulsion unit comprising a nacelle and a turbomachine independently supported by a wing, fuselage or tail element
A propulsion unit for an aircraft, includes a support structure, a nacelle and a turbomachine. The support structure is configured to independently support, on the one hand, the turbomachine and, on the other hand, preferably by a cradle, an air inlet and/or a rear section of the nacelle.
1. A propulsion unit for an aircraft, comprising a nacelle, a support structure and first connecting means configured to connect a propelling turbomachine to the support structure, the nacelle comprising an air inlet and a gas ejection rear section, wherein the propulsion unit further comprises second connecting means connecting the air inlet and/or the rear section of the nacelle to the support structure so that the support structure supports the propelling turbomachine via the first connecting means and so that the support structure supports the air inlet and/or the rear section of the nacelle via the second connecting means, the second connecting means comprising a hinge member configured to enable a movement of a nacelle element, said nacelle element being one of the air inlet and the rear section, between:
a flight position, in which a central axis of said nacelle element and a longitudinal central axis of the propulsion unit are coincident with or parallel to each other, and
a maintenance position, in which the central axis of said nacelle element and the longitudinal central axis of the propulsion unit are oblique or perpendicular to each other.
2. The propulsion unit according to claim 1 , wherein the first connecting means pass through the second connecting means.
3. An aircraft comprising a propulsion unit according to claim 1 , said support structure forming a wing or fuselage or tail element.
4. The aircraft according to claim 3 , wherein the aircraft is a supersonic airplane.
5. The propulsion unit according to claim 1 , comprising a connecting rod configured to hold said nacelle element in the maintenance position and to transmit forces from one to the other among the nacelle element and the support structure when the nacelle element is in the flight position.
6. The propulsion unit according to claim 5 , wherein the connecting rod is telescopic.
7. The propulsion unit according to claim 5 , wherein an end of the connecting rod is removably attachable to the support structure.
8. The propulsion unit according to claim 1 , wherein the second connecting means comprise an intermediate support structure fastened to the support structure, the air inlet and/or the rear section of the nacelle being connected to the intermediate support structure.
9. The propulsion unit according to claim 8 , wherein the intermediate support structure forms a cradle extending circumferentially around the longitudinal central axis of the propulsion unit.
10. The propulsion unit according to claim 8 , wherein the intermediate support structure comprises:
a front frame forming a ring section configured to fasten the air inlet of the nacelle thereto, and/or
a rear frame forming a ring section configured to fasten the rear section of the nacelle thereto.
11. The propulsion unit according to claim 8 , wherein the air inlet and/or the rear section of the nacelle are mounted cantilevered on the intermediate support structure.