Abstract: Provided are systems and methods for propulsion and powering systems using recyclable metallic fuels. The method includes capturing fuel products, including a metal oxide and unburnt fuel from combustion of a metallic fuel, storing the unburnt metallic fuel and the fuel products to generate power and/or thrust, and recycling the metal oxide to recreate the metallic fuel and/or byproducts. A system for propulsion and power generation using a metallic fuel includes a combustion chamber for combusting the metallic fuel to provide propulsion, a reaction chamber for generating electricity and thermal power using heat from unburnt metallic fuel and fuel products, a storage system for capturing the unburnt metallic fuel and the fuel products and at least one recycling system for directing the captured unburnt metallic fuel and/or the fuel products to the combustion chamber and/or the reaction chamber.

Abstract: An example method of joining a first substrate with a second substrate includes applying a filler material between respective portions of the first substrate and the second substrate, the filler material including an electrically conducting and/or magnetic material, wherein the filler material and the respective portions define a joint; applying an alternating magnetic field to the joint to heat the electrically conducting material to a reaction temperature; in response to heating the electrically conducting material to the reaction temperature, energizing the joint using energy released from the electrically conducting material; cooling the joint to join the first substrate with the second substrate.

Abstract: The present disclosure teaches a system and method of generating electricity via a thermal power plant. The system and method includes a fuel heating chamber configured to receive a nano-thermite fuel, an induction assembly configured to inductively heat the fuel in the fuel heating chamber, and an electricity generating subsystem configured to convert heat from the heated nano-thermite fuel into electricity.

Abstract: An example engine for producing thrust includes: a fuel supply to supply a fuel; a chamber fluidly coupled to the fuel supply to receive the fuel; an induction heating assembly operatively coupled to the chamber to inductively energize the fuel in the chamber; and an exhaust nozzle coupled to the chamber to receive energized fuel from the chamber to produce thrust.