# US 11,299,296 B2 · Spacecraft > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 11,299,296 B2 - Document ID: US11299296B2 - Status: Granted - Kind: B2 - Application number: 16/308,247 - Filed: 2017-06-09 - Published: 2019-08-29 - Granted: 2022-04-12 - Earliest claimed: 2016-06-10 - Assignees: Airbus Defence and Space GmbH - Applicants: Airbus Defence and Space SAS - Inventors: Fabrice Mena; Jean-Christophe Dunat - Web page: https://patentgrep.com/patent/US11299296B2 ## CPC - B64G 1/503: {Radiator panels} - B64G 1/10: Artificial satellites; Systems of such satellites; Interplanetary vehicles (space shuttles B64G1/14) - B64G 1/506: {Heat pipes} - B64G: COSMONAUTICS; VEHICLES OR EQUIPMENT THEREFOR ## Abstract Disclosed is a spacecraft including: a housing defining an exterior space, the housing having a first face and a second face; and first and second radiators carried by the first and second faces, the first and second radiators each having an inner main face, an outer main face, and side faces. The spacecraft includes a first auxiliary radiator and a first auxiliary heat transfer device thermally connecting the first auxiliary radiator to the inner main face of the second radiator, the first auxiliary radiator being arranged in a first portion of the exterior space defined by the outer main face of the first radiator and by first planes containing the side faces of the first radiator. The first auxiliary heat transfer device includes a heat conducting device. The first auxiliary radiator is composed solely of one or two radiating panels supporting the heat conducting device. ## Claims ### Claim 1 Spacecraft (1, 75) comprising: a housing (2) defining an interior space (11) and an exterior space (13), the housing (2) having a north face (7), a south face (8) opposite to the north face (7), an east face (9), and a west face (10) opposite to the east face (9), an Earth face (5), and a zenith face (6) opposite to the Earth face (5), a first radiator (16) carried by a face among the north face (7) and south face (8), and a second radiator (18) carried by the other face among the north face (7) and south face (8), the first radiator (16) and the second radiator (18) each having an inner main face (15, 21), an outer main face (17, 23) opposite to the inner main face (15, 21), longitudinal side faces (19, 25), and transverse side faces (191, 251), wherein the spacecraft (1) further comprises a first auxiliary radiator (3, 118, 120, 124) and a first auxiliary heat transfer device (34, 76) thermally connecting said first auxiliary radiator (32, 118, 120, 124) to the inner main face (21) of the second radiator (18), the first auxiliary radiator (32, 118, 120, 124) being arranged in a first portion (46) of the exterior space (13), said first portion (46) being defined by the outer main face (17) of the first radiator and by first planes (48, 50, 52, 54) containing the side faces (19, 191) of the first radiator, and wherein said first auxiliary heat transfer device (34, 76) comprises a heat conducting device (42, 80), said first auxiliary radiator (32, 118, 120, 124) being composed solely of one or two radiating panels (100, 102) supporting said heat conducting device (42, 80), called carrier radiating panel(s). ### Claim 2 (depends on 1) Spacecraft (1, 75) according to claim 1, wherein said carrier radiating panel or panels (100) of the first auxiliary radiator (32, 118, 120, 124) have a width (L) comprised between 10 centimeters and 60 centimeters, said carrier radiating panel or panels (100) being arranged at a distance (D) comprised between 1 meter and 5.2 meters with respect to a plane containing the zenith face (6). ### Claim 3 (depends on 1) Spacecraft (1, 75) according to claim 1, wherein said carrier radiating panel or panels (100, 102) extend(s) perpendicularly to the first radiator (16), said carrier radiating panel or panels (100, 102) being at an angle comprised between 10° and 35° with respect to at least one face among the Earth face (6) and the zenith face (5). ### Claim 4 (depends on 1) Spacecraft (1, 75) according to claim 1, wherein said carrier panel or panels has (have) the shape of a rectangular trapezoid having an obtuse angle (ρ); said obtuse angle (ρ) being adjacent to a longitudinal side face (19) of the first radiator. ### Claim 5 (depends on 1) Spacecraft (1, 75) according to claim 1 comprising a solar panel (14) fixed on the north face (7), and wherein the first auxiliary radiator (32) is composed of two carrier radiating panels (100, 102) arranged relative to each other so as to form a V pointing towards said solar panel (14). ### Claim 6 (depends on 1) Spacecraft (1, 75) according to claim 1, wherein said first auxiliary radiator (118, 120, 124) is composed of a single carrier radiating panel (100) extending parallel to at least one face among the Earth face (6) and the zenith face (5). ### Claim 7 (depends on 6) Spacecraft (1, 75) according to claim 6, wherein said first auxiliary radiator (120, 124) comprises at least one radiating panel (122) without any heat conducting device, called non-carrier radiating panel or panels, said non-carrier radiating panel or panels (122) extending perpendicularly to at least one face among the north face (7) and the south face (8). ### Claim 8 (depends on 7) Spacecraft (1, 75) according to claim 7, wherein said non-carrier radiating panel or panels (122) extend(s) perpendicularly to at least one face among the zenith face (5) and the Earth face (6). ### Claim 9 (depends on 7) Spacecraft (1, 75) according to claim 7, wherein the carrier radiating panel (100) comprises a first main face (110), and a second main face (112) directed towards the Earth and opposite to the first main face (110), and wherein the non-carrier radiating panel or panels (122) is (are) fixed to the first main face (110). ### Claim 10 (depends on 7) Spacecraft (1, 75) according to claim 7, wherein said first auxiliary radiator (124) comprises a plurality of non-carrier radiating panels (122) having different widths, and wherein said non-carrier radiating panel (122) of greatest width is arranged in a central portion of the carrier radiating panel (100). ### Claim 11 (depends on 1) Spacecraft (1, 75) according to claim 1, wherein said first auxiliary radiator (118) is composed of a single radiating panel extending in a plane perpendicular to the first radiator (16) and to a face among the Earth face (6) and the zenith face (5). ### Claim 12 (depends on 1) Spacecraft (1, 75) according to claim 1, wherein said first auxiliary radiator (118) is composed of a single radiating panel extending in a plane perpendicular to a face among the Earth face (6) and the zenith face (5), said plane being at an angle of about 23.5 degrees relative to the first radiator (16). ### Claim 13 (depends on 1) Spacecraft (1, 75) according to claim 1, wherein the first auxiliary radiator is composed of two carrier radiating panels and two radiating panels without any heat conducting device, said carrier radiating panels being fixed to each other so that the midplane of one carrier radiating panel forms an acute angle with the midplane of the other carrier radiating panel, each carrier radiating panel further being fixed to a radiating panel without any heat conducting device so that the midplane of a carrier radiating panel forms an acute angle with the midplane of the radiating panel without any heat conducting device. ### Claim 14 (depends on 1) Spacecraft (1, 75) according to claim 1, wherein said carrier radiating panel or panels are implemented in a honeycomb structure. ### Claim 15 (depends on 1) Spacecraft (1, 75) according to claim 1, wherein at least one carrier radiating panel is covered with an optical solar reflector (OSR) type of coating. ### Claim 16 (depends on 2) The spacecraft of claim 2, wherein said carrier radiating panel or panels (100) of the first auxiliary radiator (32, 118, 120, 124) have a width (L) comprised between between 40 centimeters and 50 centimeters, said carrier radiating panel or panels (100) being arranged at a distance (D) comprised between 4.3 meters and 5 meters with respect to a plane containing the zenith face (6). ### Claim 17 (depends on 2) Spacecraft (1, 75) according to claim 2, wherein said carrier radiating panel or panels (100, 102) extend(s) perpendicularly to the first radiator (16), said carrier radiating panel or panels (100, 102) being at an angle comprised between 10° and 35° with respect to at least one face among the Earth face (6) and the zenith face (5). ### Claim 18 (depends on 2) Spacecraft (1, 75) according to claim 2, wherein said carrier panel or panels has (have) the shape of a rectangular trapezoid having an obtuse angle (ρ); said obtuse angle (ρ) being adjacent to a longitudinal side face (19) of the first radiator. ### Claim 19 (depends on 3) Spacecraft (1, 75) according to claim 3, wherein said carrier panel or panels has (have) the shape of a rectangular trapezoid having an obtuse angle (ρ); said obtuse angle (ρ) being adjacent to a longitudinal side face (19) of the first radiator. ### Claim 20 (depends on 2) Spacecraft (1, 75) according to claim 2 comprising a solar panel (14) fixed on the north face (7), and wherein the first auxiliary radiator (32) is composed of two carrier radiating panels (100, 102) arranged relative to each other so as to form a V pointing towards said solar panel (14).