Abstract: Embodiments of the invention relate to advanced propeller assemblies that include a pressure modifying element that modifies its aerodynamic characteristics. Embodiments of the invention may provide benefits including but not limited to: increased thrust per rotation, greater efficiency, modified aerodynamics, and the ability to use such propellers for novel applications. Practical applications for embodiments of propellers of the invention include use with aircraft, drones, watercraft, autogyros, fans, blowers, pumps, generators, compressors, mixers, and blenders.

Abstract: Embodiments of the invention relate to advanced propeller assemblies that include a pressure modifying element that modifies its aerodynamic characteristics. Embodiments of the invention may provide benefits including but not limited to: increased thrust per rotation, greater efficiency, modified aerodynamics, and the ability to use such propellers for novel applications. Practical applications for embodiments of propellers of the invention include use with aircraft, drones, watercraft, autogyros, fans, blowers, pumps, generators, compressors, mixers, and blenders.

Abstract: Devices and methods for removal of fasteners by Electro-discharge Machining (EDM) such that portions of the fastener, such as a flange head, may be separated from other portions of the fastener, such as a shank.

Abstract: The hand-held electro-discharge device to remove boluses of material from a workpiece. In some implementations a conductive electrode and its supporting ground pin are immersed in a dielectric fluid contained in a hood or cavity near or at the electrode's distal tip an removably sealed to a conductive workpiece. A flushing inlet and outlet in fluid communication with said hood provide a flushing fluid, which may also be a dielectric fluid to remove FOD and cool.

Abstract: A control module for an EDM device, comprises: controls for managing power supplied to the EDM device, taking voltage measurements, calculating responses, and controlling advancement of an electrode of the EDM device. The EDM device may include a piezoelectric crystal that electrically in parallel with the voltage applied to a spark gap between the electrode and a workpiece.

Abstract: The hand-held electro-discharge machining fastener removal device of this invention brings an EDM electrode and its supporting ground pin and dielectric fluid structure to a fastener in a workpiece, such as an aircraft fuselage. The hand-held device brings the dielectric fluid, power supply, and control system structure to the fastener in a compact tool to permit EDM machining to be brought to large structures.

Abstract: A munition has an external surface. The munition may be of any type. The external surface includes a coating on at least part of it. Coatings may be, for example, paints, tapes, appliqués or other materials. The coating on the munition includes one or more of reflective material, phosphorescent material and fluorescent material. The reflective, phosphorescent and/or fluorescent coatings are applied to the munition prior to its being deployed. The reflective, phosphorescent and/or fluorescent materials in the coatings are visible at a safe distance from the munition and help to identify unexploded ordnance.

Abstract: A particle analyzer that includes a specimen source, a flow cell, a pump and delivery tube for transporting specimen fluid from the specimen source to the flow cell, a dispensing valve for injecting stain from a stain source into the specimen fluid in the delivery tube, and a mixing device for mixing the stain and the specimen fluid together. The mixing device includes a cylindrical shaped member having an outer surface, a channel formed in the outer surface with the channel including circumferential and longitudinal turns, and a hollow mixing tube disposed in the channel. As the stain and the specimen fluid flow through the mixing tube, they travel through the circumferential and longitudinal turns and are mixed together. A fluid sensor employing a sensor RC circuit and a reference RC circuit detects capacitance changes in the delivery tube for detecting the presence or absence of fluid therein.

Abstract: The invention is a state machine having a host controller that controls a level-1 controller controller, wherein the level-1 controller controls the level-2 controller. The level-2 controller controls system component controllers, which in turn control system components to execute a process segment. For example, the machine includes a host controller that selects a set of states to be executed, a level-1 controller that activates the set of states in a predetermined order, wherein each state includes commands, and a level-2 controller that controls system components according to the commands. The invention also includes a method of executing a process by identifying a set of states to be executed, issuing state commands that need to be issued to execute the current state in the set of states, and activating a next state only after all expected status reports have been received for the current state.

Abstract: A process for denitrating the dinitrate ester of diethyleneglycol is disced which comprises introducing the dinitrate ester of diethyleneglycol into an aqueous phosphate buffer containing the tripeptide reduced glutathione and the enzyme glutathione S-transferase.

Abstract: An improved chemical process is provided for the disposal of scrap nitroculose. The process involves the use of organic sulfhydryl-containing compounds to effect the nitrogen release from the nitrocellulose polymer. The nitrogen released by the application of this procedure is in the form of inorganic nitrite ions. The process is in effect a nucleophilic attack on the nitrocellulose, and is accompanied by cleavage or breakage of the cellulose chain.

Abstract: This invention is an improved enzymatic process for the removal of nitrite ons from an aqueous solution resulting from the denitration of a nitrate ester. The aqueous solution is treated with an enzyme nitrite reductase resulting from inducement under faculatative anaerobic conditions of pseudomonas sp.

Abstract: A non-woven fabric is manufactured which utilizes as a primary component material the fringed selvage band resulting as a by-product in the manufacture of certain woven fabrics. Strips of selvage band are laid down on a non-woven backing or web in various configurations, depending upon the ultimate appearance that is desired. The selvage strips are then secured to the backing by punching with an array of forked needles, each of which forces a loop of yarn from the selvage through a hole in the backing.

Abstract: A non-woven fabric is manufactured which utilizes as a primary component material the fringed selvage band resulting as a by-product in the manufacture of certain woven fabrics. Strips of selvage band are laid down on a non-woven backing or web in various configurations, depending upon the ultimate appearance that is desired. The selvage strips are then secured to the backing by punching with an array of forked needles, each of which forces a loop of yarn from the selvage through a hole in the backing.