A gas turbine engine includes a compressor section, a combustor fluidly connected to the compressor section via a primary flowpath, a turbine section fluidly connected to the combustor via the primary flowpath, and a plurality of fuel injectors disposed within the combusto. The plurality of fuel injectors including at least one start fuel injector. Also included is a controller having a memory and processor. The memory stores instructions configured to cause the at least one start fuel injector to pulse fuel through the start injector nozzle, thereby preventing stagnant fuel in the start injector nozzle from exceed a coking temperature threshold.

A spray boom includes a body having a length defined a first end and a second end thereof. The body is formed by a plurality of layers of composite material adapted to be molded together to form an inner surface and an outer surface. A hollow cavity is defined in the body internally of the inner surface, and a channel is formed in the body between the inner surface and the outer surface. The channel extends along the length and is defined between the first end and the second end.

An energy-saving and high-efficiency shower head capable of producing a pulsating stream includes a main body having an inlet opening, an upper cover and a cover plate connected to the underside of the main body, a water-stop mechanism, and a face plate. The cover plate is formed with a water-passing chamber and a pulsating chamber having an oblique hole. The pulsating chamber is provided with at least two diversion holes to form two outlet passages. The water-stop mechanism is composed of an impeller and a water-stop piece disposed on the impeller. The water-stop piece alternately blocks one of diversion holes when the impeller rotates to intermittently open and close the outlet passages corresponding to the diversion holes, providing a pulsating stream effect.

A fluid discharge mechanism includes a valve chamber having a linking portion linked to a pressurization space for a fluid, a first communication portion formed on a side opposite to the linking portion, and a second communication portion formed at a location between the linking portion and the first communication portion; a main flow channel communicating the second communication portion with a discharge opening; a sub-flow channel communicating the first communication portion with the main flow channel; and a valve member located inside the valve chamber and formed so as to move forward to the first-communication-portion side when the pressurization-space side reaches a predetermined pressure, to open the second communication portion, thereby performing the discharge, and so as to move backward to the communication-portion side after completion of the discharge.

A nozzle comprising: a main body having a sidewall, a first end and, a second end, wherein the main body has a central channel extending from the first end to the second end and at least one aperture extending through the sidewall distal to the second end and a retention means is positioned within the channel positioned between the second end and the at least one aperture; a collar having a lip disposed at a first end and a securement means disposed at a second end adjustably attached to the main body, wherein a cavity is formed between the main body and the collar and in a first position the lip creates a tight seal with the main body; a blocker positioned within the channel of the main body, wherein the blocker freely rotating about a central axis of the channel; and a means of axially retaining the blocker within the channel.

Embodiments include a sprayer system having dynamic pre-sets to control spray nozzles that each individually operates continuously or under a time-modulated or a frequency-modulated electronic signal control to release the liquid droplets. Collectively, adjacent or near neighboring nozzles are also controlled by time-sequencing through different modes of operation or physical configurations on each spray nozzle. The spray nozzles are mounted on a variety of implements including agricultural or industrial spray booms.

An aerated wax application assembly comprises a meltable wax applicator, one or more meltable wax delivery conduits having a first end coupled to the meltable wax inlet of the meltable wax applicator and a second end positioned proximate a meltable wax holding tank, and an air injection system positioned upstream from the meltable wax applicator and configured to inject air into the meltable wax and generate the aerated meltable wax upstream of the inlet of the meltable wax applicator. A method of applying an aerated meltable wax onto an object comprises injecting air into a meltable wax such that it forms an aerated meltable wax, delivering the aerated wax through one or more meltable wax delivery conduits to a meltable wax applicator, and contacting at least one exposed surface of the object with the aerated wax when dispensing the aerated meltable wax from an outlet of the meltable wax applicator.

Embodiments include individual physical spray nozzles that have passageways inside to combine fluids that flow out of the spray nozzles. The nozzles have at least two valves that are opened and closed in an interleaved manner. The nozzles have multiple outlets. Such nozzles are mounted on a variety of implements including agricultural or industrial spray booms.

A device for dispensing a fluid topical composition includes a reservoir storing the composition and dispensing a pressurized flow of the composition. The device also includes an accumulator having an expandable chamber in fluidly communication with the reservoir. The chamber is biased towards a deflated configuration so that, when filled with the composition the chamber expands against this bias applying pressure to the composition stored therein. The device includes a supply valve regulating the flow of the composition from the reservoir to the accumulator, and a pressure sensor. The device further includes a processing arrangement analyzing data from the sensor to determine whether pressure in the accumulator is above a predetermined threshold and controlling the supply valve to maintain the pressure within a desired pressure range. The device also includes a deposition arrangement dispensing the composition from the accumulator under control of the processing arrangement.

A fog-cloud generating nozzle is disclosed. In one embodiment, a nozzle head having a fluid passageway is threadable coupled to a nozzle base. The nozzle base, which provides a threadable coupling to a water source, is disposed in fluid communication with the fluid passageway. An inner sleeve is rotationally disposed within the fluid passageway with bearing surfaces against the nozzle head and the nozzle base. Multiple discharge ports of the nozzle head and multiple discharge orifices of the inner sleeve cooperate to generate a fog-cloud having a magnified forward thrust component and enabled directional control.