Method for improving aero-engine air injection reverse thrust efficiency

An aero-engine and engine technology, which is applied to the exhaust port of the power unit, affects the air flow through the surface of the aircraft, and the parts of the aircraft to achieve the effect of improving the propulsion efficiency.

Inactive Publication Date: 2013-05-15
魏伯卿
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Problems solved by technology

[0002]Most of the current aero-engines use the high-speed gas ejected from the aircraft engine to act on the atmosphere to generate reverse thrust to propel the aircraft forward. Great efforts are being made both at home and abroad Committed to studying how to improve the performance of the engine to improve the propulsion efficiency of the aircraft, but so far no research report on how to improve the efficiency of jet gas flow reverse thrust has been found

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  • Method for improving aero-engine air injection reverse thrust efficiency
  • Method for improving aero-engine air injection reverse thrust efficiency
  • Method for improving aero-engine air injection reverse thrust efficiency

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Embodiment Construction

[0025] exist figure 1In the embodiment one shown in -3: the method for improving the jet reverse thrust efficiency of the aeroengine is to introduce the airflow from the lower side opening of the wing front edge 4, and these airflows are passed through the wing rear end air guide cavity 6 and fuselage air guide cavity 8 guide to the vicinity of the engine injection port 11 for ejection, when these air streams are injected near the engine injection port 11, they form an angle of 30°~89° with the engine hot gas flow 10 ejected from the engine injection port 11 The included angle makes these air flows form a high-density "gas cushion" near the engine injection port 11, so that the air flow around the aircraft is sent to the vicinity of the engine injection port 11 and forms a "gas cushion" to improve the hot gas injection of the engine. While the reverse thrust efficiency also makes the airflow 20 flow rate and the flow velocity of the lower side of the wing greatly reduced, and...

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Abstract

The invention discloses a method for improving aero-engine air injection reverse thrust efficiency. The method for improving the aero-engine air injection reverse thrust efficiency comprises the following steps that: air flows around an aircraft are utilized to be leaded and injected close to an engine injection port; by utilizing the speed difference that the flow speed of the air flows if far less than the flow speed of hot air flows ejected by an aircraft engine, the air flows can generate a high-density 'gas gasket' close to the engine injection port, and the hot gases ejected by the engine are completely and directly ejected to the 'gas gasket', so that a high reverse thrust effect can be generated; and high-temperature hot gases ejected by the engine are mixed with natural temperature of the 'gas gasket', so that the 'gas gasket' is necessarily expanded rapidly, and the 'gas gasket', which is expanded rapidly, can be used for increasing the 'thickness' and 'density' effects of the gas gasket', so that the ejected gas reverse thrust efficiency is increased.

Description

technical field [0001] The invention relates to a method for improving the jet reverse thrust efficiency of an aeroengine, which is applicable to various aircraft of reverse thrust propulsion principles, and belongs to the field of aerospace and national defense science and technology. Background technique [0002] Most of the current aero-engines use the high-speed gas ejected from the aircraft engine to act on the atmosphere to generate reverse thrust to propel the aircraft forward. Both at home and abroad are making great efforts to study how to improve the performance of the engine to improve the propulsion efficiency of the aircraft. But so far, there is no research report on how to improve the jet gas flow reverse thrust efficiency. Contents of the invention [0003] The purpose of the present invention is to provide a method that can produce a similar higher density "gas cushion" near the jet gas flow nozzle of the aircraft to improve the jet reverse thrust efficie...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B64C23/00B64D33/04
Inventor 魏伯卿
Owner 魏伯卿
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