A combined heat and power system and method of operation is provided. The system includes a combustion chamber configured to directly combust solid organic material. A compressor turbine is fluidly coupled to the combustion chamber. An expansion turbine is fluidly coupled to the combustion chamber. In an embodiment, the system has a low turbine pressure ratio.

A combined heat and power system and method of operation is provided. The system includes a combustion chamber configured to directly combust solid organic material. A compressor turbine is fluidly coupled to the combustion chamber. An expansion turbine is fluidly coupled to the combustion chamber. In an embodiment, the system has a low turbine pressure ratio.

A gas generator includes, a housing provided with a gas discharge port, an ignition chamber, accommodating an igniter and a transfer charge, provided on an end portion of the housing, a combustion chamber disposed within the housing and accommodating a gas generating agent, a rupturable closing member partitioning the combustion chamber from the ignition chamber and including a rupturable portion ruptured upon an actuation of the gas generator, and an inner tube extending from the closing member toward the gas discharge port inside the combustion chamber. The inner tube defines outside thereof a space containing the gas generating agent, and defines inside a hollow space. The inner tube is provided with a plurality of through holes. The inner tube includes one end communicating the hollow space with the ignition chamber to transfer the transfer charge in a burning state toward an opposite end when the rupturable portion is ruptured.

A gas generator includes, a housing provided with a gas discharge port, an ignition chamber, accommodating an igniter and a transfer charge, provided on an end portion of the housing, a combustion chamber disposed within the housing and accommodating a gas generating agent, a rupturable closing member partitioning the combustion chamber from the ignition chamber and including a rupturable portion ruptured upon an actuation of the gas generator, and an inner tube extending from the closing member toward the gas discharge port inside the combustion chamber. The inner tube defines outside thereof a space containing the gas generating agent, and defines inside a hollow space. The inner tube is provided with a plurality of through holes. The inner tube includes one end communicating the hollow space with the ignition chamber to transfer the transfer charge in a burning state toward an opposite end when the rupturable portion is ruptured.

A solid fuel propulsion system includes a housing, an air inlet configured to enable air to flow into the housing, an air duct, a rotation detonation chamber, and a nozzle assembly. The air duct is disposed in the housing and is in fluid communication with the air inlet. The air duct is configured to supply air for combustion of a solid fuel configured to sublimate into a gaseous fuel mixture. The rotation detonation chamber is disposed in the housing aft of the air duct and is configured to combust the gaseous fuel mixture and air to generate a rotating detonation wave. The nozzle assembly is configured to expand and exhaust the flow prompted by the rotating detonation wave to generate thrust.

A solid fuel propulsion system includes a housing, an air inlet configured to enable air to flow into the housing, an air duct, a rotation detonation chamber, and a nozzle assembly. The air duct is disposed in the housing and is in fluid communication with the air inlet. The air duct is configured to supply air for combustion of a solid fuel configured to sublimate into a gaseous fuel mixture. The rotation detonation chamber is disposed in the housing aft of the air duct and is configured to combust the gaseous fuel mixture and air to generate a rotating detonation wave. The nozzle assembly is configured to expand and exhaust the flow prompted by the rotating detonation wave to generate thrust.

A combustion system, particle separator and feed system for a combined heat and power system is provided. The system includes a combustion chamber configured to directly combust solid organic material. A combustion system is provided having a pressure vessel and a combustion chamber. The combustion chamber is disposed within the pressure vessel with a space therebetween. A conical plenum is disposed within the combustion chamber that distributes fuel to a perimeter of the combustion chamber. Plenum tubes extend from the conical plenum are configured to lift and suspend the solid organic material and induce a cyclonic flow within the combustion chamber. A port is coupled between an air source and the space, wherein during operation, air flows from the air source through the port and into the space to provide a thermal break between the combustion chamber and the pressure vessel.

A combustion system, particle separator and feed system for a combined heat and power system is provided. The system includes a combustion chamber configured to directly combust solid organic material. A combustion system is provided having a pressure vessel and a combustion chamber. The combustion chamber is disposed within the pressure vessel with a space therebetween. A conical plenum is disposed within the combustion chamber that distributes fuel to a perimeter of the combustion chamber. Plenum tubes extend from the conical plenum are configured to lift and suspend the solid organic material and induce a cyclonic flow within the combustion chamber. A port is coupled between an air source and the space, wherein during operation, air flows from the air source through the port and into the space to provide a thermal break between the combustion chamber and the pressure vessel.

A combined heat and power system and method of operation is provided. The system includes a combustion chamber configured to directly combust solid organic material. A compressor turbine is fluidly coupled to the combustion chamber. An expansion turbine is fluidly coupled to the combustion chamber. In an embodiment, the system has a low turbine pressure ratio.

A gas generator including, a housing provided with a gas discharge port, an ignition chamber provided on a side of a first end portion of the cylindrical housing and including an igniter, a combustion chamber disposed within the housing and containing therein a molded article of a gas generating agent, a rupturable closing member partitioning the combustion chamber from the ignition chamber and including therein a rupturable portion partially ruptured upon an actuation of the gas generator, a molded article of a transfer charge contained in the ignition chamber, an inner tube disposed in the combustion chamber and extending from the closing member toward the gas discharge port and defining, in an outside thereof, a space that contains the molded article of the gas generating agent, the inner tube including therein a hollow space and having a peripheral wall provided with a plurality of through holes, the inner tube including a first open end and communicating the hollow space with the ignition chamber so as to transfer the molded articles of the transfer charge in a burning state toward the second end portion in the inner tube when the rupturable portion is ruptured.