Abstract: A ventilation system for ventilation of a patient includes a patient interface device for attaching to the patient and a measuring and analysis device for measuring and analyzing breathing of the patient. The measuring and analysis device includes a connector housing defining a passage. A first portion of the connector housing is connected to the patient interface device. The measuring and analysis device further includes an air flow sensor and a pressure sensor disposed in the connector housing for measuring an air flow rate through the connector housing and a pressure in the connector housing respectively. The present device also includes a processor configured for data acquisition, data storage, data processing, and data output based on the air flow rate and the pressure, whereby the ventilation system is operable with real-time feedback based on the data output. A method for administering cardiopulmonary resuscitation is also provided.

Abstract: Methods and systems for delivery of pulsated air to a user using a device including a flow generator to generate a continuous air flow, a first actuator comprising a pulsated flow delivery mechanism configured to generate a pulsated air flow from the continuous air flow based on a pre-determined duty cycle to vary a frequency of the pulsated air flow, a user interface configured to generate and deliver vortices of pulsated air to the user at the frequency of the pulsated air flow, and a set of tubing to couple the flow generator, the first actuator, and the user interface.

Abstract: Methods and apparatuses for reducing engine noise provided. In one embodiment, an apparatus is provided that includes a plurality of seals and flaps that are interconnected and circumferentially arranged. Also included are a plurality of micro-vortex generator pairs respectively disposed in a circumferential manner on an interior surface of the seals. Each micro-vortex generator pair includes a first and second micro-vortex generator. In another embodiment, a method of generating a plurality of vortices in a nozzle section of a jet engine is provided. A plurality of micro-vortex generator pairs are provided on a plurality of seal surfaces of the nozzle section, respectively. The micro-vortex generator pairs are constructed to generate two vortices adjacent to an interior surface of the nozzle section and extending in a direction towards a nozzle exit.

Abstract: A ventilation system for ventilation of a patient includes a patient interface device for attaching to the patient and a measuring and analysis device for measuring and analyzing breathing of the patient. The measuring and analysis device includes a connector housing defining a passage. A first portion of the connector housing is connected to the patient interface device. The measuring and analysis device further includes an air flow sensor and a pressure sensor disposed in the connector housing for measuring an air flow rate through the connector housing and a pressure in the connector housing respectively. The present device also includes a processor configured for data acquisition, data storage, data processing, and data output based on the air flow rate and the pressure, whereby the ventilation system is operable with real-time feedback based on the data output. A method for administering cardiopulmonary resuscitation is also provided.

Abstract: Methods and systems for delivery of pulsated air to a user using a device including a flow generator to generate a continuous air flow, a first actuator comprising a pulsated flow delivery mechanism configured to generate a pulsated air flow from the continuous air flow based on a pre-determined duty cycle to vary a frequency of the pulsated air flow, a user interface configured to generate and deliver vortices of pulsated air to the user at the frequency of the pulsated air flow, and a set of tubing to couple the flow generator, the first actuator, and the user interface.

Abstract: A device for unblocking and removing secretions from airways, including small airways, by applying oscillated air flow and acoustic vibrations, illustratively according to preprogrammed protocol that defines at least one of frequency, waveform, pressure amplitude, and oscillation duration. In an illustrative embodiment, the device applies a combination of air flow oscillations and acoustic waves to facilitate detachment of mucus from airway walls by matching the resonance of specific airway sections and mucus, amplifying the effect. For optimization, an algorithm illustratively matches the required frequencies, amplitudes, duty cycle, and/or relative phases to specific patient and secretion characteristics.

Abstract: Provided herein is a method for assisting breathing in a subject, the method including passing a pressurized airflow through a fluidic diverter, wherein the fluidic diverter converts the airflow into pulses of pressurized air that are diverted alternately to provide a first and a second train of pulses of pressurized air; and directing the first and second trains of pulses of pressurized air into a nasal passageway of a subject to assist breathing. Also provided herein is a device for assisting breathing, including an airflow source coupled to a fluidic diverter. The devices and methods provided herein generate positive airway pressure in the form of pulsatile vortex airflow for the treatment of obstructive sleep apnea in a subject, without the need for a sealed interface between the subject and the device.

Abstract: A method and system for a tone generator assembly are provided. The tone generator assembly includes a resonance chamber that includes a first end and a second end and a body extending therebetween. The body surrounds a cavity therein, wherein the first end includes a resonance chamber opening in flow communication with the cavity. The tone generator assembly also includes a nozzle having a bore therethrough. The bore includes an inlet opening configured to receive a flow of relatively high pressure fluid and an outlet opening coupled in flow communication with the inlet opening and configured to discharge an underexpanded jet of fluid when the flow of relatively high pressure fluid is received at the inlet opening. The resonance chamber and the nozzle are positioned relatively and sized to facilitate emitting a tone from the tone generator assembly having a frequency less than two kilohertz.

Abstract: Acoustic pressure inducers and methods for treating obstructive sleep apnea are disclosed. In one embodiment, an acoustic pressure inducer includes an actuator housing having an orifice, a tube having a first end and a second end, and a nasal cannula fluidly coupled to the second end of the tube. The first end of the tube is fluidly coupled to the orifice of the actuator housing such that a gap is present between the first end of the tube and the orifice. The nasal cannula is configured to be positioned proximate to nostrils of a user. The acoustic pressure inducer further includes a vibrating element within the actuator housing and a signal generator. The signal generator component is electrically coupled to the vibrating element and configured to provide an electronic signal to the vibrating element to cause the vibrating element to oscillate within the actuator housing and produce an acoustic jet of air that exits the orifice and enters a nasal passageway of the user through the nasal cannula.

Abstract: Concepts and technologies described herein provide for the creation of a high speed actuating fluid flow utilizing one or more pulse detonation actuators. According to one aspect of the disclosure provided herein, an actuating flow trigger is detected with respect to a high speed airflow over an aerodynamic surface. In response, a pulse detonation actuator is activated and a resulting high speed actuating flow is directed into the high speed airflow to alter at least one attribute of the high speed airflow.

Abstract: A flameless burner for a gas turbine engine includes a burner body having a longitudinal axis, an upstream section and a downstream section. The upstream section of the burner body defines a primary swirl generating chamber having air swirlers associated therewith. The primary swirl generating chamber is adapted and configured to receive compressor discharge air through the air swirlers. The strong swirl of the compressor discharge air forms a recirculation zone that entrains combustion product gases toward the burner body. Fuel injectors are operatively connected to the downstream section of the burner body for issuing fuel into the recirculated combustion product gases.

Abstract: Acoustic pressure inducers and methods for treating obstructive sleep apnea are disclosed. In one embodiment, an acoustic pressure inducer includes an actuator housing having an orifice, a tube having a first end and a second end, and a nasal cannula fluidly coupled to the second end of the tube. The first end of the tube is fluidly coupled to the orifice of the actuator housing such that a gap is present between the first end of the tube and the orifice. The nasal cannula is configured to be positioned proximate to nostrils of a user. The acoustic pressure inducer further includes a vibrating element within the actuator housing and a signal generator. The signal generator component is electrically coupled to the vibrating element and configured to provide an electronic signal to the vibrating element to cause the vibrating element to oscillate within the actuator housing and produce an acoustic jet of air that exits the orifice and enters a nasal passageway of the user through the nasal cannula.

Abstract: A method and system for a tone generator assembly are provided. The tone generator assembly includes a resonance chamber that includes a first end and a second end and a body extending therebetween. The body surrounds a cavity therein, wherein the first end includes a resonance chamber opening in flow communication with the cavity. The tone generator assembly also includes a nozzle having a bore therethrough. The bore includes an inlet opening configured to receive a flow of relatively high pressure fluid and an outlet opening coupled in flow communication with the inlet opening and configured to discharge an underexpanded jet of fluid when the flow of relatively high pressure fluid is received at the inlet opening. The resonance chamber and the nozzle are positioned relatively and sized to facilitate emitting a tone from the tone generator assembly having a frequency less than two kilohertz.

Abstract: A burner for a heat generator comprises a swirl generator (1) for a combustion-air flow and means for injecting fuel for producing a main flow (6). A combustion chamber (2) is arranged downstream of the burner. A cavity (3) is arranged between the swirl generator (1) and the combustion chamber (2), in which cavity (3) a secondary flow (10) can be produced, and this secondary flow (10) encloses the main flow (6).

Abstract: A flameless burner for a gas turbine engine includes a burner body having a longitudinal axis, an upstream section and a downstream section. The upstream section of the burner body defines a primary swirl generating chamber having air swirlers associated therewith. The primary swirl generating chamber is adapted and configured to receive compressor discharge air through the air swirlers. The strong swirl of the compressor discharge air forms a recirculation zone that entrains combustion product gases toward the burner body. Fuel injectors are operatively connected to the downstream section of the burner body for issuing fuel into the recirculated combustion product gases.

Abstract: The present invention relates to a method and a device for affecting thermoacoustic oscillations in a combustion system (i) comprising at least one burner (2) and at least one combustor (3), modulated injection of fuel being carried out. In order to improve the action of affecting the thermoacoustic oscillations, the modulated injection of the fuel is carried out into a recirculation zone (7) which forms in the combustor (3).

Abstract: The present invention relates to a method and a device (1) for affecting thermoacoustic oscillations in a combustion system (6) comprising at least one burner (7) and at least one combustor (8). In order to improve the action of affecting the thermoacoustic oscillations, a gas flow forming in the e region of the burner (7) is excited acoustically, modulated injection of fuel is carried out, the acoustic excitation of the gas flow and the modulated injection of the fuel are coordinated in order to affect the same interference frequency.

Abstract: A method for operating a gas turbine engine includes channeling compressed air from the gas turbine engine to a noise suppression system, and selectively operating the noise suppression system such that air discharged from the noise suppression system generates a streamwise vortex downstream from each respective chevron.

Abstract: A method for operating a gas turbine engine includes channeling compressed air from the gas turbine engine to a noise suppression system, and selectively operating the noise suppression system such that air discharged from the noise suppression system generates a plurality of flow control mechanisms in the gas turbine exhaust flowpath.

Abstract: A method and a device are described for the controlled damping of combustion-driven oscillations in a turbomachine with a burner system providing at least one burner, into which is introduced, via at least one burner nozzle arranged centrally in the burner, fuel which is intermixed with combustion inflow air flowing into the burner, to form a fuel/air mixture which is ignited in a combustion chamber following the burner system. The invention is distinguished in that the fuel nozzle is designed in the form of a burner lance, at the lance end of which fuel discharge into the burner takes place, and in that the burner lance projects into the burner in the amount of at least one third of the axial burner length.