Abstract: A linearizer-channel amplifier device for a dual RF channel designed to be installed on a telecommunication satellite comprises two independent radiofrequency channels, each radiofrequency channel corresponding to a radiofrequency-signal communication channel and comprising a channel-amplifier module, the two radiofrequency channels being connected to one and the same remote control and telemetry module designed to route and to manage remote control signals dedicated to each of the two channel-amplifier modules and to manage telemetries produced by the two channel-amplifier modules. For application notably to the field of satellite telecommunications and in particular to the radiofrequency transmission systems of satellite repeaters.

Abstract: A linearizer-channel amplifier device for a dual RF channel designed to be installed on a telecommunication satellite comprises two independent radiofrequency channels, each radiofrequency channel corresponding to a radiofrequency-signal communication channel and comprising a channel-amplifier module, the two radiofrequency channels being connected to one and the same remote control and telemetry module designed to route and to manage remote control signals dedicated to each of the two channel-amplifier modules and to manage telemetries produced by the two channel-amplifier modules. For application notably to the field of satellite telecommunications and in particular to the radiofrequency transmission systems of satellite repeaters.

Abstract: A system dedicated to dissipating heat produced by amplifier tubes of a spacecraft comprises a radiating panel installed substantially parallel to the amplifier tubes and thermally coupled to them to radiate to the outside a portion of the heat that they produce, a radiating receptacle whose walls define a housing adapted to receive the collectors of the amplifier tubes, and preferably a heat distributor that is preferably interleaved between the collectors and one wall of the receptacle to distribute the heat that the collectors produce between the collectors and the wall.

Abstract: A system dedicated to dissipating heat produced by amplifier tubes of a spacecraft comprises a radiating panel installed substantially parallel to the amplifier tubes and thermally coupled to them to radiate to the outside a portion of the heat that they produce, a radiating receptacle whose walls define a housing adapted to receive the collectors of the amplifier tubes, and preferably a heat distributor that is preferably interleaved between the collectors and one wall of the receptacle to distribute the heat that the collectors produce between the collectors and the wall.

Abstract: Aqueous silicone dispersions crosslinkable into elastomeric state on removal of water therefrom under ambient conditions, well adapted, e.g., for the production of elastomeric silicone seals in the construction industry, include an oil-in-water base emulsion (A) of an .alpha.,.omega.-(dihydroxy) polydiorganosiloxane stabilized with at least one anionic or nonionic surface-active agent, or mixture thereof, (B) an aqueous latex of an organic (co)polymer having a particle size ranging from 0.01 to 0.5 .mu.m and a solids content ranging from 20% to 70% by weight, (C) an effective crosslinking amount of at least one crosslinking agent, (D) an effective amount of at least one nonsiliceous filler material, and (E), optionally, a catalytically effective amount of a metal curing catalyst, such aqueous dispersions further having a solids content of at least 40% by weight.

Abstract: Aqueous silicone dispersions crosslinkable into elastomeric state on removal of water therefrom under ambient conditions, well adapted, e.g., for the production of elastomeric silicone seals in the construction industry, include an oil-in-water base emulsion (A) of an .alpha.,.omega.-(dihydroxy)polydiorganosiloxane stabilized with at least one anionic or nonionic surface-active agent, or mixture thereof, (B) an aqueous latex of an organic (co)polymer having a particle size ranging from 0.01 to 0.5 .mu.m and a solids content ranging from 20% to 70% by weight, (C) an effective crosslinking amount of at least one crosslinking agent, (D) an effective amount of at least one nonsiliceous filler material, and (E), optionally, a catalytically effective amount of a metal curing catalyst, such aqueous dispersions further having a solids content of at least 40% by weight.