The invention relates to a space rover (2) with a thermal management system that is optimized to perform in an extreme environment such as that on the moon. It comprises a frame (4) to which components of the rover are connected, four wheels (10) connected to the frame, and an active body (14) assembled on the frame and comprising wheel components (16) movable between an open position in which they uncover the wheels and a closed position in which they cover the wheels, and access doors (18) movable between an open position in which at least some components of the rover are uncovered and a closed position in which some components of the rover are limited to the inside of the body. The body is movable in relation to the frame between a high driving position in which it is raised in relation to the wheels and a low confinement position in which it is lowered in relation to the wheels to increase confinement of the rover’s components to limit heat loss.
The invention relates to a deformable wheel (2) with non-pneumatic load bearing intended to equip a vehicle for rolling under extreme conditions such as those encountered on the Moon and on Mars, comprising a hub (4), a annular tread (6) intended to be in contact with the soil, positioned around the hub which is concentric therewith and comprising a layer of composite material coated with at least one protective layer, and a plurality of metal cables (8) whose outer diameter is comprised between 0.2 mm and 5 mm, each cable connecting the hub (4) to the tread while being fixed, on the one hand by an external end (8a) to the tread, and on the other hand by an internal end (8b) to the hub by means of an elastic member (18) making it possible to modulate the radial stiffness of the cables, each elastic member being associated with an abutment (12, 14) able to limit its deformation.
B60B 9/02 - Roues à grande élasticité utilisant des ressorts
B60B 19/00 - Roues non prévues ailleurs ou ayant des caractéristiques précisées dans l'un des sous-groupes du présent groupe
B60C 7/06 - Pneumatiques non gonflables ou bandages pleins faits de métal
B60C 7/10 - Pneumatiques non gonflables ou bandages pleins caractérisés par des dispositifs pour augmenter l'élasticité
B60C 7/22 - Pneumatiques non gonflables ou bandages pleins ayant des couches incorporées autres que celles visant à augmenter l'élasticité, p. ex. pour armaturer
3.
DEFORMABLE WHEEL WITH SIMPLIFIED DESIGN FOR LUNAR AND MARTIAN CONDITIONS
The application relates to a deformable wheel with non-pneumatic load bearing intended to equip a vehicle for rolling under extreme conditions such as those encountered on the Moon and on Mars, comprising a hub, an annular tread intended to be in contact with the soil, positioned around the hub which is concentric therewith and comprising a layer of composite material coated with at least one protective layer, and a plurality of metal cables whose outer diameter is comprised between 0.2 mm and 5 mm, each cable connecting the hub to the tread while being fixed, on the one hand by an external end to the tread, and on the other hand by an internal end to the hub by an elastic member making it possible to modulate the radial stiffness of the cables, each elastic member being associated with an abutment able to limit its deformation.
"The invention relates to a deformable wheel (2) with non-pneumatic load support intended to equip a vehicle for driving in extreme conditions such as those encountered on the moon and on Mars, comprising a hub (4), a laminated band (6) comprising a plurality of ferrules which are assembled with the interposition of interposition layers, and a plurality of metallic cables (8) connecting the hub to the laminated band, the laminated band being covered with at least one thermal barrier coating (20) in at least one material having a thermal conductivity lower than 0.2 Wm-1K-1, and the wheel also comprising heating means (22, 24, 26) for the laminated band’s interposition layers."
"The invention relates to a deformable wheel (2) with non-pneumatic load support intended to equip a vehicle for driving in extreme conditions such as those encountered on the moon and on Mars, comprising a hub (4) carrying at least one thrust disc (20) projecting radially outwards, a tread (6) with an outer surface intended to be in contact with the ground while being capable of deforming under an externally applied load to marry the ground surface, and an inner surface capable of bearing against the thrust disc in order to limit deformations of the tread in radial directions, and a plurality of radial reinforcements (8) connecting the tread to the hub, the thrust disc being mounted to be mobile in rotation on the hub in a way to be rotated when the inner surface of the tread bears against the thrust disc."
Disclosed herein is a deformable wheel with non-pneumatic load bearing intended to equip a vehicle for driving in extreme conditions such as those encountered on the Moon and on Mars, comprising a hub, a laminated strip comprising a plurality of ferrules assembled with the interposition of interposition layers, and a plurality of metal cables connecting the hub to the laminated strip, the laminated strip being covered with at least one thermal insulation coating made of at least one material having a thermal conductivity of less than 0.2 Wm−1K−1, and the wheel further comprising means for heating the interposition layers of the laminated strip.
A deformable wheel with non-pneumatic load bearing, intended to equip a vehicle for rolling under extreme conditions, such as those encountered on the Moon and on Mars may comprise a hub bearing at least one stop disc which projects radially towards the outside, a tread layer having an outer surface which is intended to be in contact with the ground being able to deform under an externally applied load in order to match the surface of the ground, and an inner surface which is able to come to bear against the stop disc in order to limit the deformations of the tread layer in the radial direction, and a plurality of radial reinforcements linking the tread layer to the hub.
A process of preparation of a polysiloxane contains methyl and ethyl groups, and comprises the step of a) hydrolysis reaction of the silanol precursors, b) extension of the chain of the silanol-terminated siloxane oligomers obtained in step a) by means of a Lewis acid-induced polycondensation by the addition of a triflate salt catalyst, followed by the addition of a perfluoroborane catalyst. The disclosure includes a Poly(dimethyl-co-diethyl)siloxane of a formula (IIIa); the poly(methylhydro-co-diethyl)siloxane of a formula (IIIb); a composition for the preparation of a silicone rubber comprises the polymers; a silicone rubber obtainable by the curing of the composition and the use of the silicone rubber in aerospace industry. A poly (dimethyl-co-diethyl)siloxane of formula V may be used in the aerospace industry.
A deformable wheel with non-pneumatic load bearing intended to equip a vehicle for rolling under extreme conditions such as those encountered on the moon and on Mars, includes a hub, a laminated annular strip including a plurality of concentric ferrules which are assembled with the interposition of interposing layers each composed of a material whose Young's modulus is 600,000 to 1,000 times lower than that of the ferrules, and a plurality of metal cables. Each cable connects the hub to the laminated strip while being fixed, on the one hand by an external end to the laminated strip, and on the other hand by an internal end to the hub by means of an elastic member making it possible to modulate the radial stiffness of the cables. Each elastic member is associated with an abutment able to limit its deformation.
B60C 7/06 - Pneumatiques non gonflables ou bandages pleins faits de métal
B60C 7/10 - Pneumatiques non gonflables ou bandages pleins caractérisés par des dispositifs pour augmenter l'élasticité
B60C 7/24 - Pneumatiques non gonflables ou bandages pleins caractérisés par des dispositifs de fixation, des bandages sur la jante ou sur le corps de la roue
11.
DEFORMABLE NON-PNEUMATIC WHEEL WITH LOAD SUPPORT FOR LUNAR AND MARTIAN CONDITIONS
L'invention concerne une roue (2) déformable à support de charge non-pneumatique destinée à équiper un véhicule pour rouler en conditions extrêmes comme celles rencontrées sur la lune et sur Mars, comprenant un moyeu (4), une bande annulaire lamifiée (6) comprenant une pluralité de viroles concentriques qui sont assemblées avec interposition de couches d'interposition composées chacune d'un matériau dont le module de Young est de 600000 à 1000 fois inférieur à celui des viroles, et une pluralité de câbles (8) métalliques dont le diamètre externe est compris entre 0,2 mm et 5 mm, chaque câble reliant le moyeu (4) à la bande lamifiée (6) en étant fixé, d'une part par une extrémité extérieure (8a) à la bande lamifiée, et d'autre part par une extrémité intérieure (8b) au moyeu par l'intermédiaire d'un organe élastique (18) permettant de moduler la raideur radiale des câbles, chaque organe élastique étant associé à une butée (12, 14) apte à limiter sa déformation.
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