Abstract: An electric propulsion power system a power plant providing power to a bus, a load drawing power from the bus, a battery providing power to and drawing power from the bus. The power system also includes a control system for controlling the amount of power that the power plant provides to the bus, the amount of power that the battery provides to and draws from the bus in response to the load drawing power from the bus over time. The control system calculates a moving time-average current value over a predetermined time window using the instantaneous current measurements, determines a delta current value as the difference between a current charge/discharge limit of the battery and the moving time-average current value and determines if additional power from the power plant to the bus will be provided and a rate of current in the discharge mode or the charge mode.

Abstract: A battery package includes a card, a cover, a tray, and batteries. The cover is attached to the card and includes a door and an opening formed in the front of the cover and the peripheral edge of the cover. The door is movable between an open position to provide access to the opening and a closed position. The tray is positioned between the card and the cover and includes multiple receptacles. Each battery is positioned within one of the receptacles. The card includes a recess in the outer edge of the card at a battery removal position. The tray is movable relative to the card and the cover to selectively align one of the receptacles with the opening in the battery removal position. With the door in the open position, the battery in the receptacle in the battery removal position is accessible through the opening.

Abstract: A cutting board system that includes a cutting surface that removeably cooperates with at least one side of a base portion of the cutting board system. In a preferred aspect, the cutting surface includes a cutting layer and an indicator layer that underlies the cutting layer. Exposure of the indicator layer provides an indication as to degradation or use of the cutting layer and is indicative of desired replacement of the cutting surface. In a more preferred embodiment, respective cutting layers are associated with the generally opposite sides of the indicator layer such that the cutting surface is reversible.

Abstract: A cutting board system that includes a cutting surface that removeably cooperates with at least one side of a base portion of the cutting board system. In a preferred aspect, the cutting surface includes a cutting layer and an indicator layer that underlies the cutting layer. Exposure of the indicator layer provides an indication as to degradation or use of the cutting layer and is indicative of desired replacement of the cutting surface. In a more preferred embodiment, respective cutting layers are associated with the generally opposite sides of the indicator layer such that the cutting surface is reversible.

Abstract: A battery package includes a card, a cover attached to the card, a tray positioned between the card and the cover, batteries, and tabs. The cover includes an opening and a door. The door is movable between an open position to provide access to the opening and a closed position. The tray includes a plurality of receptacles in which are positioned the batteries. Each tab is removably attached to one of the batteries and is positioned between the cover and the battery. The tray is rotatable relative to the card and the cover about an axis of rotation to selectively align one of the receptacles with the opening in a battery removal position. With the door in the open position, the tab attached to the battery in the receptacle in the battery removal position is accessible through the opening from the front of the cover and the peripheral edge of the cover.

Abstract: A battery package includes a card, a cover, a tray, and batteries. The cover is attached to the card and includes a door and an opening formed in the front of the cover and the peripheral edge of the cover. The door is movable between an open position to provide access to the opening and a closed position. The tray is positioned between the card and the cover and includes multiple receptacles. Each battery is positioned within one of the receptacles. The card includes a recess in the outer edge of the card at a battery removal position. The tray is movable relative to the card and the cover to selectively align one of the receptacles with the opening in the battery removal position. With the door in the open position, the battery in the receptacle in the battery removal position is accessible through the opening.

Abstract: A battery package includes a card and multiple battery packs. Each battery pack includes a cover attached to a portion of the card, and a tray positioned between the portion of the card and the cover. The cover includes an opening and a door. The door is movable between an open position and a closed position. The tray includes multiple receptacles. Each battery pack further includes multiple batteries and multiple tabs. Each battery is positioned within one of the receptacles. Each tab is removably attached to one of the batteries. The tray is rotatable relative to the portion of the card and the cover to selectively align one of the receptacles with the opening in a battery removal position. With the door in the open position, the tab attached to the battery in the receptacle in the battery removal position is accessible through the opening.

Abstract: A battery package includes a card, a cover attached to the card, a tray positioned between the card and the cover, batteries, and tabs. The cover includes an opening and a door. The door is movable between an open position to provide access to the opening and a closed position. The tray includes a plurality of receptacles in which are positioned the batteries. Each tab is removably attached to one of the batteries and is positioned between the cover and the battery. The tray is rotatable relative to the card and the cover about an axis of rotation to selectively align one of the receptacles with the opening in a battery removal position. With the door in the open position, the tab attached to the battery in the receptacle in the battery removal position is accessible through the opening from the front of the cover and the peripheral edge of the cover.

Abstract: A battery package includes a card and multiple battery packs. Each battery pack includes a cover attached to a portion of the card, and a tray positioned between the portion of the card and the cover. The cover includes an opening and a door. The door is movable between an open position and a closed position. The tray includes multiple receptacles. Each battery pack further includes multiple batteries and multiple tabs. Each battery is positioned within one of the receptacles. Each tab is removably attached to one of the batteries. The tray is rotatable relative to the portion of the card and the cover to selectively align one of the receptacles with the opening in a battery removal position. With the door in the open position, the tab attached to the battery in the receptacle in the battery removal position is accessible through the opening.

Abstract: A battery package includes a card, a cover attached to the card, and a tray positioned between the card and the cover. The cover includes an opening and a door. The door is movable between an open position and a closed position. The tray includes multiple receptacles. The battery package further includes multiple batteries and multiple tabs. Each battery is positioned within one of the receptacles. Each tab is removably attached to one of the batteries. The tray is rotatable relative to the card and the cover to selectively align one of the receptacles with the opening in a battery removal position. With the door in the open position, the tab attached to the battery in the receptacle in the battery removal position is accessible through the opening which provides an arc of access of at least 90 degrees.

Abstract: A battery package includes a card, a cover attached to the card, a tray positioned between the card and the cover, batteries, and tabs. The cover includes an opening and a door. The door is movable between an open position to provide access to the opening and a closed position. The tray includes a plurality of receptacles in which are positioned the batteries. Each tab is removably attached to one of the batteries and is positioned between the cover and the battery. The tray is rotatable relative to the card and the cover about an axis of rotation to selectively align one of the receptacles with the opening in a battery removal position. With the door in the open position, the tab attached to the battery in the receptacle in the battery removal position is accessible through the opening from the front of the cover and the peripheral edge of the cover.

Abstract: A battery package includes a card, a cover attached to the card, and a tray positioned between the card and the cover. The cover includes an opening and a door. The door is movable between an open position and a closed position. The tray includes multiple receptacles. The battery package further includes multiple batteries and multiple tabs. Each battery is positioned within one of the receptacles. Each tab is removably attached to one of the batteries. The tray is rotatable relative to the card and the cover to selectively align one of the receptacles with the opening in a battery removal position. With the door in the open position, the tab attached to the battery in the receptacle in the battery removal position is accessible through the opening which provides an arc of access of at least 90 degrees.

Abstract: A battery package includes a card, a cover attached to the card, and a tray positioned between the card and the cover. The cover includes a body having an opening and a door with the door movable between an open position to provide access to the opening and a closed position in which the door closes the opening. The tray includes multiple receptacles arranged symmetrically about a central post. The front surface of the central post is spaced apart from the interior surface of the front portion of the cover by a distance. The battery package also includes multiple batteries and multiple tabs. The tray is rotatable to selectively align one of the receptacles with the opening in a battery removal position. With the door in the open position, the tab attached to the battery in the receptacle in the battery removal position is accessible through the opening.

Abstract: A cutting board system that includes a cutting surface that removeably cooperates with at least one side of a base portion of the cutting board system. In a preferred aspect, the cutting surface includes a cutting layer and an indicator layer that underlies the cutting layer. Exposure of the indicator layer provides an indication as to degradation or use of the cutting layer and is indicative of desired replacement of the cutting surface. In a more preferred embodiment, respective cutting layers are associated with the generally opposite sides of the indicator layer such that the cutting surface is reversible.

Abstract: A cutting board system that includes a cutting surface that removeably cooperates with at least one side of a base portion of the cutting board system. In a preferred aspect, the cutting surface includes a cutting layer and an indicator layer that underlies the cutting layer. Exposure of the indicator layer provides an indication as to degradation or use of the cutting layer and is indicative of desired replacement of the cutting surface. In a more preferred embodiment, respective cutting layers are associated with the generally opposite sides of the indicator layer such that the cutting surface is reversible.

Abstract: A pressure sensor assembly for simultaneously providing a time-resolved total pressure measurement and steady state flow angles of an airflow. The assembly includes an outer shroud having a front face, a rear face and a central bore having a wall. A dynamic absolute pressure sensor is positioned within the bore and provides a time-resolved total airflow pressure measurement. First and second spaced apart static pressure ports extend from the front face of the shroud to the rear face of the shroud and adjacent to the bore. The pressure ports provide a pressure that can be measured by pressure probes, where a combination of the time-resolved total pressure measurement and pressure measurements from the probes provides a steady state flow angle of the airflow.

Abstract: A battery package includes a card, a cover attached to the card, and a tray positioned between the card and the cover. The cover includes a body having an opening and a door with the door movable between an open position to provide access to the opening and a closed position in which the door closes the opening. The tray includes multiple receptacles arranged symmetrically about a central post. The front surface of the central post is spaced apart from the interior surface of the front portion of the cover by a distance. The battery package also includes multiple batteries and multiple tabs. The tray is rotatable to selectively align one of the receptacles with the opening in a battery removal position. With the door in the open position, the tab attached to the battery in the receptacle in the battery removal position is accessible through the opening.

Abstract: A battery package includes a card, a cover attached to the card, a tray positioned between the card and the cover, batteries, and tabs. The cover includes an opening and a door. The door is movable between an open position to provide access to the opening and a closed position. The tray includes a plurality of receptacles in which are positioned the batteries. Each tab is removably attached to one of the batteries and is positioned between the cover and the battery. The tray is rotatable relative to the card and the cover about an axis of rotation to selectively align one of the receptacles with the opening in a battery removal position. With the door in the open position, the tab attached to the battery in the receptacle in the battery removal position is accessible through the opening from the front of the cover and the peripheral edge of the cover.