Unmanned aircraft for telecommunicative or scientific purposes

Details Unmanned aircraft for telecommunicative or scientific purposes Unmanned aircraft for telecommunicative or scientific purposes

B - Operations, Transporting

64

B

B64B 1/60 (2006.01)

Patent

CA 2636630

The invention relates to an unmanned aircraft for telecommunicative or other scientific purposes, which s stationed in determined height, in particular in the stratosphere. The aircraft comprises a gas-filled balloon (11) carrying a platform (10) and means for maintaining the platform position relative to the ground. The balloon (11) carrying theplatform (10) is disposed in the interior of an external balloon (12) of aerodynamical shape, particularly in the stratosphere. At least one low or high pressure insulation chamber (20; 20'; 20'') filled with a medium is arranged between them and encircles the inner balloon (11). The medium used in the insulation chamber is a gas having a low thermal conductivity. The negative effects of the temperature differences are largely compensated so that the inner balloon can be produced from a lighter and cheaper material, thereby increasing durably its longevity.

L'invention concerne un aéronef sans équipage pour les télécommunications et d'autres fins scientifiques, lequel est stationné à une altitude définie, notamment dans la stratosphère. Cet aéronef comprend un ballon (11) portant une plate-forme (10) et rempli de gaz, ainsi que des moyens pour maintenir la position de la plate-forme relativement à la terre. Le ballon (11) portant la plate-forme (10) est disposé à l'intérieur d'un ballon externe (12) de forme extérieure aérodynamique, notamment dans la stratosphère. Entre eux se trouve au moins une chambre d'isolation à haute ou basse pression (20; 20'; 20") remplie d'un agent et entourant le ballon (11) interne. L'agent de la chambre d'isolation est un gaz à faible conductibilité thermique. Les effets négatifs des différences de température sont largement compensés, si bien que le matériau du ballon interne peut être plus léger et moins coûteux, la longévité dudit ballon n'en étant pas moins durablement augmentée.

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