Abstract: An emergency park brake system of an aircraft may include a user input interface configured to receive actuation input from a user. The emergency park brake system may also include a first displacement sensor and a second displacement sensor that are both coupled to the user input interface. The first displacement sensor may be configured to detect displacement of the user input interface and generate a first status of the user input interface and the second displacement sensor may be configured to also detect displacement of the user input interface and generate a second status of the user input interface. The emergency park brake system may also include a controller having a processor and memory. The controller may be configured to determine an emergency park brake condition.

Abstract: An electrically controlled park and emergency brake system is disclosed. The brake system may comprise a brake control module having a shut-off valve in fluid communication with an outboard servo-valve and an inboard servo-valve. An emergency/park power source may supply fluid to the shut-off valve. The brake system may also comprise a vehicle management system in electronic communication with the brake control module. The brake system may also comprise mechanical inputs, including a wheel well brake handle and a cockpit brake handle. The brake system may also comprise redundant emergency/park power sources.

Abstract: An emergency park brake system of an aircraft may include a user input interface configured to receive actuation input from a user. The emergency park brake system may also include a first displacement sensor and a second displacement sensor that are both coupled to the user input interface. The first displacement sensor may be configured to detect displacement of the user input interface and generate a first status of the user input interface and the second displacement sensor may be configured to also detect displacement of the user input interface and generate a second status of the user input interface. The emergency park brake system may also include a controller having a processor and memory. The controller may be configured to determine an emergency park brake condition.

Abstract: An electrically controlled park and emergency brake system is disclosed. The brake system may comprise a brake control module having a shut-off valve in fluid communication with an outboard servo-valve and an inboard servo-valve. An emergency/park power source may supply fluid to the shut-off valve. The brake system may also comprise a vehicle management system in electronic communication with the brake control module. The brake system may also comprise mechanical inputs, including a wheel well brake handle and a cockpit brake handle. The brake system may also comprise redundant emergency/park power sources.

Abstract: A brake system is provided. The brake system may comprise a controller, a vehicle management system (VMS), a shut-off valve (SOV), an outboard valve (OBV), an inboard valve (IBV), a control module, an emergency/park power source, and a tangible, non-transitory memory configured to communicate with the controller. The VMS may be in communication with the controller. The control module may be in communication with the SOV, OBV, and IBV. The SOV may be in communication with the controller. The OBV may be in communication with the controller and in fluid communication with the SOV. The IBV may be in communication with the controller and in fluid communication with the SOV. The emergency/park power source may be in fluid communication with the SOV.

Abstract: This apparatus for "Forming and Conrolling Large-Volume Bubbles" consists essentially of four elements: First, a bubble-forming loop made of a flexible, large-pore (substantially noncapillary) material able to store large quantities of bubble solution by adhesion to a large surface area, by formation of numerous small reservoirs in the large pores, and by surface tension in the solution film enclosing the loop material, said film uniting with the solution stored within and able to release the solution quickly to an expanding bubble; second, means of supporting said bubble-forming loop; third, means of controllably opening and closing the bubble-forming loop while minimizing reliance on inertial or centrifugal forces; and fourth, means of maximizing continuity of supply of solution to the bubble-forming loop. Soap bubbles up to eight feet across have been made with the apparatus.

Abstract: This apparatus for "Forming and Controlling Large-Volume Bubbles" consists essentially of four elements: First, a bubble-forming loop made of a flexible, large-pore (substantially noncapillary) material able to store large quantities of bubble solution by adhesion to a large surface area, by formation of numerous small reservoirs in the large pores, and by surface tension in the solution film enclosing the loop material, the film uniting with the solution stored within and able to release the solution quickly to an expanding bubble; second, rod member for supporting the bubble-forming loop; third, slide member for controllably opening and closing the bubble-forming loop while minimizing reliance on inertial or centrifugal forces; and fourth, reservoir for maximizing continuity of supply of solution to the bubble-forming loop. Soap bubbles up to eight feet across have been made with the apparatus.