CN114136644A - Device and method for measuring resistance of air inlet channel in aircraft engine ground platform test - Google Patents
Device and method for measuring resistance of air inlet channel in aircraft engine ground platform test Download PDFInfo
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- CN114136644A CN114136644A CN202111222145.2A CN202111222145A CN114136644A CN 114136644 A CN114136644 A CN 114136644A CN 202111222145 A CN202111222145 A CN 202111222145A CN 114136644 A CN114136644 A CN 114136644A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M15/00—Testing of engines
- G01M15/14—Testing gas-turbine engines or jet-propulsion engines
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M15/00—Testing of engines
- G01M15/02—Details or accessories of testing apparatus
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M9/00—Aerodynamic testing; Arrangements in or on wind tunnels
- G01M9/06—Measuring arrangements specially adapted for aerodynamic testing
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- Fluid Mechanics (AREA)
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- Engineering & Computer Science (AREA)
- Combustion & Propulsion (AREA)
- Measurement Of Resistance Or Impedance (AREA)
- Testing Of Engines (AREA)
Abstract
The invention provides a device for measuring the resistance of an air inlet passage in an aircraft engine ground platform test, which comprises a fixed frame, a first movable frame arranged on the fixed frame, a simulation engine fixed above the first movable frame, a flow guide basin arranged at the head part of the simulation engine and a working force measuring sensor used for measuring the force transmitted by the first movable frame, wherein a comb tooth section is arranged between the flow guide basin and a flow pipe of the simulation engine, and the comb tooth section transmits the air inlet resistance received by the flow guide basin so as to directly measure the resistance of the air inlet passage. The invention provides a device and a method for directly measuring the resistance of an air inlet passage in an aircraft engine ground platform test.
Description
Technical Field
The invention belongs to the field of aero-engine tests, and particularly relates to a device and a method for measuring resistance of an air inlet channel in an aero-engine ground platform test.
Background
Thrust is the most important performance parameter of an aircraft engine, and the calculation of the performance parameters such as the fuel consumption rate of the engine is related to the thrust, so the thrust of the engine must be accurately measured. In the process of testing the engine on the ground platform, because the space of the test room of the ground platform is limited, the speed of the air flow flowing through the test room is not zero, and the force which is generated when the air flow enters the diversion basin from far front and acts on the air inlet passage of the engine and is opposite to the thrust direction of the engine is the resistance of the air inlet passage. The air inlet resistance can directly influence the engine thrust measurement result, and the test bench thrust test result can be accurately corrected only by accurately measuring the air inlet resistance.
The existing method for measuring the air inlet resistance calculates the air inlet resistance by measuring flow field parameters (mainly comprising air flow speed, pressure and temperature) of a test workshop, is a typical indirect measurement method, and has high requirements on the quality of the flow field of the test workshop. Due to the influence of the field test equipment in the test workshop on the flow field, the flow line direction of the flow field in the test workshop is changed, and the measurement precision of the resistance of the air inlet channel is influenced.
Therefore, the device and the method for directly measuring the resistance of the air inlet channel in the test of the ground platform of the aircraft engine are provided, and the method is not influenced by the flow field quality of a test workshop.
Disclosure of Invention
In order to solve the problems, aiming at some ground test beds, the unevenness of the flow field in a test workshop is large, the resistance of the air inlet channel is calculated by measuring the flow field parameters in the test workshop, the precision is low, and the requirement of thrust correction cannot be met. The invention provides a device and a method for directly measuring the resistance of an air inlet passage in an aircraft engine ground platform test.
The invention aims to provide a device for measuring the resistance of an air inlet passage in an aircraft engine ground platform test, which comprises a fixed frame, a first movable frame arranged on the fixed frame, a simulation engine fixed above the first movable frame, a flow guide basin arranged at the head part of the simulation engine and a working force measuring sensor for measuring the force transmitted by the first movable frame, wherein a comb tooth section is arranged between the flow guide basin and a flow pipe of the simulation engine, and the comb tooth section transmits the air inlet resistance received by the flow guide basin so as to directly measure the resistance of the air inlet passage.
The device for measuring the resistance of the air inlet channel in the test of the aircraft engine ground platform is also characterized in that the diversion basin is fixed on a second movable frame, the air inlet resistance is transmitted to the second movable frame, the second movable frame is fixed on the first movable frame, and measuring equipment for measuring the resistance transmitted by the grate tooth section is arranged on the second movable frame.
The device for measuring the resistance of the air inlet passage in the test of the ground platform of the aero-engine is also characterized in that the measuring equipment is an air inlet passage additional resistance measuring sensor, one end of the air inlet passage additional resistance measuring sensor is connected with the second movable frame, and the other end of the air inlet passage additional resistance measuring sensor is connected with the flow tube.
The device for measuring the resistance of the air inlet channel in the test of the aircraft engine ground platform is also characterized in that the working force measuring sensor is connected with the first movable frame through a first movable frame spring piece.
The device for measuring the resistance of the air inlet channel in the test of the aircraft engine ground platform is also characterized in that the sensor for measuring the additional resistance of the air inlet channel is connected with the second movable frame through a second movable frame spring piece.
Another object of the present invention is to provide a method for measuring the resistance of an aircraft engine ground test inlet duct, wherein the method uses the device according to any one of the above items.
The invention provides a method for measuring the resistance of an air inlet channel in a test of an aircraft engine ground platform, which is also characterized by comprising the following steps:
s1: calibrating the second movable frame and the air inlet additional resistance measuring sensor to obtain the corresponding relation between the air inlet additional resistance measuring sensor and the standard force;
s2: and in the test process, directly recording data of the air inlet additional resistance measuring sensor, namely the air inlet resistance of the aircraft engine ground test.
Compared with the prior art, the invention has the following beneficial effects
The invention provides a device and a method for directly measuring the resistance of an air inlet passage in an aircraft engine ground platform test.
Description of the drawings:
in order to more clearly illustrate the technical solution of the present invention, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a schematic structural diagram of an aircraft engine ground platform test air inlet channel resistance measurement device provided by the invention.
Detailed Description
In order to make the technical means, the creation features, the achievement purposes and the effects of the invention easy to understand, the following embodiments are specifically described for the measuring device provided by the invention with reference to the attached drawings.
In the description of the embodiments of the present invention, it should be understood that the terms "central", "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on those shown in the drawings, and are only used for convenience in describing and simplifying the description of the present invention, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.
Furthermore, the terms "first," "second," "third," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicit to a number of indicated technical features. Thus, a feature defined as "first," "second," etc. may explicitly or implicitly include one or more of that feature. In the description of the invention, the meaning of "a plurality" is two or more unless otherwise specified. The terms "mounted," "connected," and "coupled" are to be construed broadly and may, for example, be fixedly coupled, detachably coupled, or integrally coupled; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the creation of the present invention can be understood by those of ordinary skill in the art through specific situations.
As shown in fig. 1, an embodiment of the present invention provides an air inlet resistance measuring device for an aircraft engine ground platform test, where the device includes a fixed frame I, a first movable frame II disposed on the fixed frame, a simulation engine III fixed above the first movable frame, a diversion basin VI disposed at a head of the simulation engine III, and a working force measuring sensor VII for measuring a force transmitted by the first movable frame II, where a comb tooth section V is disposed between the diversion basin VI and a flow tube IV of the simulation engine III, and the comb tooth section V transmits an intake resistance received by the diversion basin VI, so as to perform direct measurement of an air inlet resistance.
In some embodiments, the flow guiding basin VI is fixed on a second movable frame IX, the intake resistance is transmitted to the second movable frame IX, the second movable frame IX is fixed on the first movable frame IX, and a measuring device for measuring the resistance transmitted by the grate tooth section V is arranged on the second movable frame IX.
In some embodiments, the measuring device is an air inlet additional resistance measuring sensor XI, one end of the air inlet additional resistance measuring sensor XI is connected with the second movable frame IX, and the other end of the air inlet additional resistance measuring sensor XI is connected with the flow tube IV.
In some embodiments, the working force measuring sensor VII is connected to the first moving frame II through a first moving frame spring VIII.
In some embodiments, the air inlet additional resistance measuring sensor XI is connected to the second moving frame IX through a second moving frame spring plate X.
In some embodiments, a method for measuring aircraft engine ground platform test air inlet resistance is provided, the method comprising the following steps:
s1: calibrating the second movable frame IX and the air inlet channel additional resistance measuring sensor XI to obtain a corresponding relation between the air inlet channel additional resistance measuring sensor XI and a standard force;
s2: in the test process, data of an air inlet additional resistance measuring sensor XI are directly recorded, namely the resistance of the air inlet of the aircraft engine ground test.
In the practical engineering use process, the thrust of the aircraft engine is the sum of the additional resistance and the standard force of the air inlet passage.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are also included in the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (7)
1. The utility model provides an aeroengine ground platform test intake duct resistance measuring device, a serial communication port, the device is including the fixed bolster, set up first movable support on the fixed bolster, fix the simulation engine in first movable support top, set up the water conservancy diversion basin of simulation engine head and be used for measuring the working force measuring transducer of the power that first movable support transmitted, wherein, the water conservancy diversion basin with be equipped with the comb tooth section between the flow tube of simulation engine, the comb tooth section will the air intake resistance that the water conservancy diversion basin received is transmitted out to carry out the direct measurement of intake duct resistance.
2. The device for measuring the resistance of the air inlet channel in the test of the aircraft engine ground platform according to claim 1, wherein the diversion basin is fixed on a second movable frame, the air inlet resistance is transmitted to the second movable frame, the second movable frame is fixed on a first movable frame, and a measuring device for measuring the resistance transmitted by the grate tooth section is arranged on the second movable frame.
3. The device for measuring the resistance of the air inlet passage in the test of the ground platform of the aircraft engine as claimed in claim 2, wherein the measuring equipment is an air inlet passage additional resistance measuring sensor, one end of the air inlet passage additional resistance measuring sensor is connected with the second movable frame, and the other end of the air inlet passage additional resistance measuring sensor is connected with the flow pipe.
4. The aero-engine ground platform test inlet duct resistance measurement device of claim 1, wherein the working force measurement sensor is connected to the first moving frame through a first moving frame spring plate.
5. The aero-engine ground platform test air inlet duct resistance measuring device according to claim 1, wherein the air inlet duct additional resistance measuring sensor is connected with the second moving frame through a second moving frame spring piece.
6. A method for measuring the resistance of an aircraft engine ground test air inlet channel, characterized in that the method uses a device according to any one of claims 1-5.
7. The method of measuring aircraft engine ground test inlet duct resistance of claim 6, comprising the steps of:
s1: calibrating the second movable frame and the air inlet additional resistance measuring sensor to obtain the corresponding relation between the air inlet additional resistance measuring sensor and the standard force;
s2: and in the test process, directly recording data of the air inlet additional resistance measuring sensor, namely the air inlet resistance of the aircraft engine ground test. .
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN202111222145.2A CN114136644B (en) | 2021-10-20 | 2021-10-20 | Aeroengine ground table test air inlet channel resistance measuring device and method |
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| CN202111222145.2A CN114136644B (en) | 2021-10-20 | 2021-10-20 | Aeroengine ground table test air inlet channel resistance measuring device and method |
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| CN114136644A true CN114136644A (en) | 2022-03-04 |
| CN114136644B CN114136644B (en) | 2023-09-19 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114813155A (en) * | 2022-06-27 | 2022-07-29 | 中国航发四川燃气涡轮研究院 | Engine exhaust vector angle measurement and tail flame monitoring system |
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| CN114813155A (en) * | 2022-06-27 | 2022-07-29 | 中国航发四川燃气涡轮研究院 | Engine exhaust vector angle measurement and tail flame monitoring system |
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| CN114136644B (en) | 2023-09-19 |
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