Device for fueling launcher thrusters

1. A fueling device for fueling thrusters of a launcher, the device being characterized in that it comprises:

a ground module comprising at least: a ground pipe for connection upstream to a source of fluid; a ground valve connected downstream to the ground pipe; and a ground plate including a ground passage connected to said ground valve;

an on-board module comprising at least: an on-board pipe for connecting downstream to tanks of the thrusters; an on-board valve connected upstream to the on-board pipe; and an on-board plate including an on-board passage connected to said on-board valve;

a hydraulic coupling system between the on-board module and the ground module enabling fluid communication to be established between the ground passage and the on-board passage, and a first annular enclosure situated between the on-board plate and the ground plate around the hydraulic coupling system so that, when connected to suction, it enables the on-board plate and the ground plate to be held in a connected-together position, and

a ground actuator unit comprising a piston slidably movable in a cylinder that defines two chambers: a front chamber connected to the ground pipe and a rear chamber in which a piston head is housed, the rear chamber further comprising return means adapted to return the piston into a rear position which corresponds to a closed position for the on-board valve, and further being connect to pressure means for driving the piston in order to place the on-board valve on an open position.

2. The fueling device according to claim 1 , wherein said first enclosure is defined by a first annular bellows surrounding the hydraulic coupling system and having its ends bearing against the on-board plate and the ground plate.

3. The fueling device according to claim 1 , wherein the ground plate includes an opening leading into said first enclosure and suitable for being connected to suction means.

4. The fueling device according to claim 1 , further including a second annular enclosure suitable for being connected to high pressure, and situated between the on-board plate and the ground plate around the hydraulic coupling system with the first annular enclosure being situated around the second annular enclosure.

5. The fueling device according to claim 1 , wherein a command to open the ground valve gives rise to a command to open the on-board valve, and a command to close the ground valve gives rise to a command to close the on-board valve.

6. The fueling device according to claim 1 , wherein a command to open the on-board valve gives rise to a command to open the ground valve, and a command to close the on-board valve gives rise to a command to close the ground valve.

7. The fueling device according to claim 1 , further including between the on-board plate and the ground plate, a mechanical locking system suitable for opening while the launcher is lifting off, or prior thereto.

8. The fueling device according to claim 7 , wherein the mechanical locking system includes, on either side of the first annular enclosure, a release fork having a bottom end bearing against the on board plate in the connected position while the top end of the release fork is mounted to pivot about a ground pin secured to the ground plate in such a manner that pivoting of the release fork about the ground pin gives rise to the ground plate and the on-board plate being moved apart, and vice versa.

9. The fueling device according to claim 8 , wherein the mechanical locking system further includes, on either side of the first annular enclosure, a locking finger movable in pivoting about the ground pin between an open position that does not hold together the ground plate and the on-board plate, and a closed position in which the ground plate and the on-board plate are held together by the fact that the housing defined by the top end of the locking finger receives an on board pin secured to the on-board plate.

10. The fueling device according to claim 9 , wherein the mechanical locking system further includes a connection shaft connecting together the bottom ends of the locking fingers and having the free end of the piston rod of the piston of a control actuator mounted thereon.

11. The fueling device according to claim 1 , wherein:

the ground module includes a first ground pipe for connecting upstream to a first fluid source, a first ground valve connected downstream to the first ground pipe, a second ground pipe for connecting upstream to a second fluid source, and a second ground valve connected downstream to the second ground pipe, the ground plate being provided with a first ground passage connected to said first ground valve and with a second ground passage connected to the second ground valve;

the on-board module includes a first on-board pipe for connecting downstream to a first tank, a first on-board valve connected upstream to the first on-board pipe, a second on-board pipe for connecting downstream to a second tank, and a second on-board valve connected upstream to the second on-board pipe, the on-board plate being provided with a first on-board passage connected to said first on-board valve and with a second on-board passage connected to the second on-board valve; and

the hydraulic coupling system serves to establish fluid communication firstly between the first ground passage and the first on-board passage, and secondly between the second ground passage and the second on-board passage.

12. The fueling device according to claim 11 , wherein the first ground passage and the second ground passage are coaxial relative to each other, as are the first on-board passage and the second on-board passage, over at least a segment of said passages.

13. A fueling device for fueling thrusters of a launcher, the device being characterized in that it comprises:

a ground module comprising at least: a ground pipe for connection upstream to a source of fluid; a ground valve connected downstream to the ground pipe; and a ground plate including a ground passage connected to said ground valve;

an on-board module comprising at least: an on-board pipe for connecting downstream to tanks of the thrusters; an on-board valve connected upstream to the on-board pipe; and an on-board plate including an on-board passage connected to said on-board valve;

a hydraulic coupling system between the on-board module and the ground module enabling fluid communication to be established between the ground passage and the on-board passage, and a first annular enclosure situated between the on-board plate and the ground plate around the hydraulic coupling system so that, when connected to suction, it enables the on-board plate and the ground plate to be held in a connected-together position, and

a ground actuator unit comprising a piston slidably movable in a cylinder that defines two chambers: a front chamber connected to the ground pipe and a rear chamber in which a piston head is housed, the rear chamber further comprising return means adapted to return the piston into a rear position which corresponds to a closed position for the on-board valve, and further being connect to pressure means for driving the piston in order to place the on-board valve on an open position,

further including a second annular enclosure suitable for being connected to high pressure, and situated between the on-board plate and the ground plate around the hydraulic coupling system with the first annular enclosure being situated around the second annular enclosure.

14. A fueling device for fueling thrusters of a launcher, the device being characterized in that it comprises:

a ground module comprising at least: a ground pipe for connection upstream to a source of fluid; a ground valve connected downstream to the ground pipe; and a ground plate including a ground passage connected to said ground valve;

an on-board module comprising at least: an on-board pipe for connecting downstream to tanks of the thrusters; an on-board valve connected upstream to the on-board pipe; and an on-board plate including an on-board passage connected to said on-board valve; and

a hydraulic coupling system between the on-board module and the ground module enabling fluid communication to be established between the ground passage and the on-board passage, and a first annular enclosure situated between the on-board plate and the ground plate around the hydraulic coupling system so that, when connected to suction, it enables the on-board plate and the ground plate to be held in a connected-together position,

further including between the on-board plate and the ground plate, a mechanical locking system suitable for opening while the launcher is lifting off, or prior thereto, wherein:

the mechanical locking system includes, on either side of the first annular enclosure, a release fork having a bottom end bearing against the on-board plate in the connected position while the top end of the release fork is mounted to pivot about a ground pin secured to the ground plate in such a manner that pivoting of the release fork about the ground pin gives rise to the ground plate and the on-board plate being moved apart, and vice versa, and

the mechanical locking system further includes, on either side of the first annular enclosure, a locking finger movable in pivoting about the ground pin between an open position that does not hold together the ground plate and the on-board plate, and a closed position in which the ground plate and the on-board plate are held together by the fact that the housing defined by the top end of the locking finger receives an on-board pin secured to the on-board plate.

15. The fueling device according to claim 14 , wherein the mechanical locking system further includes a connection shaft connecting together the bottom ends of the locking fingers and having the free end of the piston rod of the piston of a control actuator mounted thereon.