Abstract: A double-walled pipe with integrated heating capability for an aircraft or spacecraft includes a pipe body rigidly formed from plastic in one piece with an inner wall, with an outer wall and with a plurality of wall supports, the wall supports connecting the inner wall to the outer wall, the inner wall and the outer wall defining an intermediate space. The double-walled pipe further includes an electrically conductive coating surrounding the inner wall within the intermediate space and configured to heat up under application of an electric current such that heat is transferred to the inner wall.

Abstract: A double-walled pipe with integrated heating capability for an aircraft or spacecraft includes a pipe body rigidly formed from plastic in one piece with an inner wall, with an outer wall and with a plurality of wall supports, the wall supports connecting the inner wall to the outer wall, the inner wall and the outer wall defining an intermediate space. The double-walled pipe further includes an electrically conductive coating surrounding the inner wall within the intermediate space and configured to heat up under application of an electric current such that heat is transferred to the inner wall.

Abstract: A system for fighting a fire in an enclosed space has at least one container (3) for holding a fire extinguishing agent under pressure. A pipe system connects a container outlet to a discharge in the enclosed space. A controllable flow control valve (5) in the pipe system is responsive to a flow control signal generated by a control unit (4) in response to sensed characteristics (pressure and/or temperature) of the agent. A trigger action initially opens the container to the pipe system. The valve is initially held open until concentration (A) of fire extinguishing agent in the enclosed space is sufficient to suffocate a started fire. Thereafter, the valve is opened intermittently to maintain a lower concentration of fire extinguishing agent in the space sufficient to prevent rekindling. More than one container may be used but only one is equipped with a valve controllable by a control unit.

Abstract: A system for fighting a fire in an enclosed space has at least one container (3) for holding a fire extinguishing agent under pressure. A pipe system connects a container outlet to a discharge in the enclosed space. A controllable flow control valve (5) in the pipe system is responsive to a flow control signal generated by a control unit (4) in response to sensed characteristics (pressure and/or temperature) of the agent. A trigger action initially opens the container to the pipe system. The valve is initially held open until concentration (A) of fire extinguishing agent in the enclosed space is sufficient to suffocate a started fire. Thereafter, the valve is opened intermittently to maintain a lower concentration of fire extinguishing agent in the space sufficient to prevent rekindling. More than one container may be used but only one is equipped with a valve controllable by a control unit.

Abstract: A system for extinguishing and suppressing a fire in an enclosed space includes a Halon storage container and a nitrogen generator that are both connected by a duct system to extinguishing nozzles arranged in the enclosed space. Halon is supplied as a first extinguishing agent from the container to achieve a rapid initial extinguishing of the fire. Nitrogen enriched air is supplied as a second extinguishing agent from the nitrogen generator to achieve a continuous long-term fire suppression, commencing simultaneously with or after the introduction of the Halon. The nitrogen generator may include a molecular sieve to continuously generate the nitrogen enriched air from an inlet flow of environmental air.

Abstract: A system for extinguishing and suppressing a fire in an enclosed space includes a Halon storage container and a nitrogen generator that are both connected by a duct system to extinguishing nozzles arranged in the enclosed space. Halon is supplied as a first extinguishing agent from the container to achieve a rapid initial extinguishing of the fire. Nitrogen enriched air is supplied as a second extinguishing agent from the nitrogen generator to achieve a continuous long-term fire suppression, commencing simultaneously with or after the introduction of the Halon. The nitrogen generator may include a molecular sieve to continuously generate the nitrogen enriched air from an inlet flow of environmental air.