TRANSMISSION ASSEMBLY FOR AN AIRCRAFT

A transmission assembly (3; 3'; 3"; 3ʹʹʹ; 3ʺʺ; 3‴ʺʹ; 3‴‴; 3‴‴′ʹ; 3‴‴ʺ) for an aircraft (1; 1'; 1"; 1ʹʹʹ. 1ʺʺ; 1‴ʺ; 1‴‴; 1‴‴′; 1‴‴ʺ), comprising a member to be lubricated (18; 40; 1800; 1801; 1400; 1401) for transmission of the motion; a tank (50; 500"; 500‴; 500ʺʺ; 500‴ʺ; 500‴‴; 1500; 2500) for a lubricating fluid and passive retaining means (60; 60'; 501"; 503‴, 504‴; 503ʺʺ; 503‴ʺ, 506‴ʺ; 600‴‴; 1600; 2600) adapted to prevent, in use, outflow of the lubricating fluid from the tank (50; 500"; 500‴; 500ʺʺ; 500‴ʺ; 500‴‴; 1500; 2500) when the temperature of the member to be lubricated (18; 40; 1800; 1801; 1400; 1401) is below a threshold value and to allow, in use, outflow of the lubricating fluid from the tank (50; 500"; 500‴; 500ʺʺ; 500‴ʺ; 500‴‴; 1500; 2500) towards said member to be lubricated (18; 40; 1800; 1801; 1400; 1401), when the temperature of the member to be lubricated (18; 40; 1800; 1801; 1400; 1401) is higher than or equal to the threshold value.