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Numerous engineering applications make use of supersonic variable nozzles to expand a flow to the desired supersonic conditions.There are two distinct categories of supersonic nozzles:nozzles that have a minimum length and gradual expansion.
In applications like supersonic wind tunnels, where maintaining a high-quality flow at the desired exit conditions is crucial, gradual-expansion nozzles are typically utilized.
The significant weight and length penalties associated with gradual expansion nozzles render them unsuitable for other applications, such as rocket nozzles;Consequently, minimum-length nozzles with a sharp corner for the initial expansion are frequently utilised.
The flow can be divided into simple and non-simple regions for nozzles with gradual expansion and minimum length.
Mach wave intersections and reflections define a non-simple region. It is desirable to minimise the non-simple region to the greatest extent possible in order to satisfy the requirement of uniform conditions at the nozzle exit.
This can be accomplished by designing the surface of the nozzle to prevent the production or reflection of Mach waves—such as characteristics—as the flow is straightened.As a result, the Characteristics Method is used to create a supersonic nozzle that meets these requirements
The Global supersonic variable nozzle market accounted for $XX Billion in 2021 and is anticipated to reach $XX Billion by 2030, registering a CAGR of XX% from 2022 to 2030.
In response to rotations of the outer sleeve or member of the nozzle, a hand-held supersonic air knife produces a pressure and power mass flow rate (CFM) that are continuously variable over a selectable power range.
One end position was identified as the highest power, and a second end position was identified as the lowest power. Between start (low) and end (high), the exterior sleeve can be rotated to any axial or circumferential position.
An intermediate power position will result. Between the start and end positions, any intermediate position will also be a supersonic nozzle with varying parameters.
The manual rotation of the sleeve by an operator or the positioning of the sleeve via remote control both result in the provision of a variable flow supersonic nozzle.
The goal of this invention is to create a supersonic variable flow nozzle with low operating costs, high efficiency, and simple application for supersonic air knives.
The present invention is technically a supersonic, sonic, or subsonic nozzle with a continuously variable power, mass flow rate (CFM), and pressure, or air power:
The maximum power position is identified as one end position and the lowest power position is identified as a second end position over a selectable power range that is responsive to rotations of the nozzle exterior sleeve.
As a start position, the lowest power nozzle design point can be specified as such or as another specific CFM/PSI combination that is responsive to nozzle exterior sleeve rotations.Between start (low) and end (high), the exterior sleeve can be rotated to any axial or circumferential position.
An intermediate power position will result.Between the start and end positions, any intermediate position will also be a supersonic nozzle with varying parameters.
Thus, the present invention offers a “dial a supersonic nozzle” in a sense.An operator’s manual rotation of the sleeve or an automated, remotely controlled positioning of the sleeve could be the invention.
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