Abstract: An air launch apparatus includes a frame, a grip, and a plurality of sidewalls and also includes a hollow substantially cylindrical barrel having a central longitudinal axis. The air launch apparatus further includes a piston disposed substantially concentric with the barrel. The piston is configured to move longitudinally along the outer surface of the barrel in directions parallel to the longitudinal axis. The air launch apparatus also includes a nut that is configured to engage the piston as a front block carrying the nut is drawn rearward toward a user, and to hold the piston stationary relative to the front block while so engaged. A plunger, fixedly connected to the piston, is configured to move with the piston. Movement of the piston and plunger, forward during cocking draws air into a volume within an air chamber of the air launch apparatus. The plunger, together with the piston, is driven rearward (toward the user) during firing of the air launch apparatus.

Abstract: A method for producing an olefin product, including the steps of converting a hydrocarbon feedstock to an unsaturated hydrocarbon stream through a steam cracking process in an olefins production plant; combusting hydrogen to provide at least some of the heating duty to the steam cracking process, wherein the hydrogen has a carbon intensity less than about 1.0 kg CO2e/kg H2, wherein the hydrogen is produced using a hydrogen production process; providing at least some of the required energy for the hydrogen production process from a biomass power plant; and processing the unsaturated hydrocarbon stream to recover the olefin product. The olefin product may comprise ethylene having a well-to-gate carbon intensity less than about 0.6 kg CO2e/kg C2H4, or may comprise propylene having a well-to-gate carbon intensity less than about 0.6 kg CO2e/kg C3H6.

Abstract: A toy launch apparatus which includes single motor synchronized quick start/advanced start flywheel apparatus employing a drive mechanism for advancing rotation of projectile-propelling flywheels and driving a projectile-feeding advance mechanism for automatic and sequenced projectile-launching operation, with movement of the pusher mechanism to rapidly fire darts from the toy apparatus. The system apparatus and methods employing the single-motor-driven mechanism facilitate advanced starting projectile-propelling flywheels and driving a projectile-feeding mechanism in a novel fashion for automatic and sequenced projectile-launching operation with reduced mechanism mass and cost.

Abstract: A toy launch apparatus which includes single motor synchronized quick start/advanced start flywheel apparatus employing a drive mechanism for advancing rotation of projectile-propelling flywheels and driving a projectile-feeding advance mechanism for automatic and sequenced projectile-launching operation, with movement of the pusher mechanism to rapidly fire darts from the toy apparatus. The system apparatus and methods employing the single-motor-driven mechanism facilitate advanced starting projectile-propelling flywheels and driving a projectile-feeding mechanism in a novel fashion for automatic and sequenced projectile-launching operation with reduced mechanism mass and cost.

Abstract: Apparatus and methods employing projectile feeding magazine storage and rapid fire toy launch apparatus in combination with dart funnel for feeding darts, anti-jamming loading and launching mechanisms, receiving a series of dart projectiles for rapid magazine loading and firing without mis-fed darts jamming up either the dart magazine or launcher. A magazine loading mechanism is positioned intermediate the funnel and the inserted magazine for receiving darts, and a stuffer mechanism above the inserted magazine penetrates the dart retaining lips of the magazine to stuff darts for loading into the magazine. The dart launching mechanism is positioned in the housing forward the inserted magazine.

Abstract: Apparatus and methods employing projectile feeding magazine storage and rapid fire toy launch apparatus in combination with dart funnel for feeding darts, anti-jamming loading and launching mechanisms, receiving a series of dart projectiles for rapid magazine loading and firing without mis-fed darts jamming up either the dart magazine or launcher. A magazine loading mechanism is positioned intermediate the funnel and the inserted magazine for receiving darts, and a stuffer mechanism above the inserted magazine penetrates the dart retaining lips of the magazine to stuff darts for loading into the magazine. The dart launching mechanism is positioned in the housing forward the inserted magazine.

Abstract: A playyard includes a collapsible frame having a rail support adapted to support a playyard floor and a playyard top rail. The playyard top rail includes a left rail segment and a right rail segment. The left rail segment and the right rail segment move relative to one another from an inline use position to a folded-storage position when the playyard is collapsed for storage or transportation.

Abstract: A method of operating a gas turbine engine is provided. The method includes introducing a fuel into a combustor, detecting a failure of ignition of the fuel, and preventing ignition until the introduced fuel is substantially removed from the gas turbine engine.

Abstract: A method of operating a gas turbine engine is provided. The method includes introducing a fuel into a combustor, detecting a failure of ignition of the fuel, and preventing ignition until the introduced fuel is substantially removed from the gas turbine engine.

Abstract: A method of operating a gas turbine engine is provided. The method includes introducing a fuel into a combustor, detecting a failure of ignition of the fuel, and preventing ignition until the introduced fuel is substantially removed from the gas turbine engine.

Abstract: A system for cooling at least one gas turbine liquid fuel component located in a high temperature environment to eliminate coking in the component is disclosed. The system includes a sleeve surrounding the liquid fuel component, a device for providing a current of cool air, and a conduit connected between the cool air device and the sleeve to direct the current of cool air into the sleeve to cool the liquid fuel component. The system can also include a manifold connected to the conduit and a plurality of second conduits for connecting the manifold to a plurality of sleeves surrounding a plurality of liquid fuel components, each sleeve being connected to a corresponding second conduit. Each sleeve includes a plurality of spacing devices for centering the sleeve around the at least one liquid fuel component so as to form an annulus between the sleeve and the liquid fuel component through which the current of cool air flows.

Abstract: A system for cooling at least one gas turbine liquid fuel component located in a high temperature environment to eliminate coking in the component is disclosed. The system includes a sleeve surrounding the liquid fuel component, a device for providing a current of cool air, and a conduit connected between the cool air device and the sleeve to direct the current of cool air into the sleeve to cool the liquid fuel component. The system can also include a manifold connected to the conduit and a plurality of second conduits for connecting the manifold to a plurality of sleeves surrounding a plurality of liquid fuel components, each sleeve being connected to a corresponding second conduit. Each sleeve includes a plurality of spacing devices for centering the sleeve around the at least one liquid fuel component so as to form an annulus between the sleeve and the liquid fuel component through which the current of cool air flows.

Abstract: A system for cooling at least one gas turbine liquid fuel component located in a high temperature environment to eliminate coking in the component is disclosed. The system includes a sleeve surrounding the liquid fuel component, a device for providing a current of cool air, and a conduit connected between the cool air device and the sleeve to direct the current of cool air into the sleeve to cool the liquid fuel component. The system can also include a manifold connected to the conduit and a plurality of second conduits for connecting the manifold to a plurality of sleeves surrounding a plurality of liquid fuel components, each sleeve being connected to a corresponding second conduit. Each sleeve includes a plurality of spacing devices for centering the sleeve around the at least one liquid fuel component so as to form an annulus between the sleeve and the liquid fuel component through which the current of cool air flows.