Abstract: Novel composite materials are provided consisting of a substrate based on fibers of natural, mineral or vegetable origin, and of a mixture formed from a matrix of water-based resin and an expanding agent. The nature and the proportions of the various elements constituting these novel composite materials is also provided. A method of manufacture for making these novel composite materials starting from the constituent elements and the characteristics of the different steps of said method is also provided.

Abstract: Novel composite materials are provided consisting of a substrate based on fibers of natural, mineral or vegetable origin, and of a mixture formed from a matrix of water-based resin and an expanding agent. The nature and the proportions of the various elements constituting these novel composite materials is also provided. A method of manufacture for making these novel composite materials starting from the constituent elements and the characteristics of the different steps of said method is also provided.

Abstract: In a method for the thermal conditioning of electronic equipment mounted on aircraft, a flow of ram air is tapped and transferred to first means enabling said flow of air to be given a first negative gradient of temperature after which, if necessary, the flow air coming from said first cooling means is transferred to second means capable of giving a second negative gradient of temperature to said flow of air, after which the flow of air coming directly from the first cooling means, combined as the case may be with the flow of air coming from the second cooling means, is transferred to the immediate vicinity of the electronic equipment to be cooled, thus achieving an appropriate thermal conditioning of said electronic equipment. The disclosure also relates to the systems designed for the implementation of this method.