CN109506941B - Variable thrust mechanism opening reliability growth test device of yaw pitching engine - Google Patents
Variable thrust mechanism opening reliability growth test device of yaw pitching engine Download PDFInfo
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- CN109506941B CN109506941B CN201811384201.0A CN201811384201A CN109506941B CN 109506941 B CN109506941 B CN 109506941B CN 201811384201 A CN201811384201 A CN 201811384201A CN 109506941 B CN109506941 B CN 109506941B
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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
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Abstract
The invention discloses a variable thrust mechanism opening reliability growth test device of a yaw pitching engine, which adopts a high-pressure air source as power for releasing a pin, ensures that a great amount of repeated development of a variable thrust mechanism release reliability growth test is carried out, and realizes the reliability growth of the variable thrust mechanism opening; by setting test lines and a millisecond watch test at the release pin and lock pin exit.
Description
Technical Field
The invention belongs to the technical field of yaw pitching engines, and particularly relates to a variable thrust mechanism opening reliability growth test device of a yaw pitching engine.
Background
The variable thrust mechanism is one of important components of a yaw pitching engine of the manned aerospace engineering escape system, and is used for adjusting the magnitude of the thrust of the yaw pitching engine according to a preset program, so that the course of the escape tower deviating from a carrier rocket body is controlled, and the successful escape (in the case of flight failure) of the escape tower or the normal flight (in the case of normal flight) of the rocket body is ensured. In view of the importance of the variable thrust mechanism, the escape system provides high reliability requirements for the opening of the variable thrust mechanism, and a large number of reliability growth tests need to be developed aiming at a typical failure mode of a mechanism opening link.
The variable thrust mechanism mainly comprises a baffle and a baffle opening mechanism; the baffle is used for adjusting the magnitude of the thrust of the yaw pitching engine; the baffle opening structure is used for locking the position of the baffle, releasing the locking state of the baffle and opening the baffle, and the baffle is overturned around the rotating shaft under the action of the mechanism, so that the variable thrust mechanism is opened. The reliability growth test of the variable thrust mechanism is mainly used for exposing the potential typical faults of the mechanism in the opening link and taking corrective measures so as to improve the reliability of the mechanism opening. .
In order to truly simulate the working state on a rocket, the power source of the reliability growth test released by the variable thrust mechanism at present also adopts the electric ignition tube with the same model and specification, and the test method mainly has the following problems:
1) the electric ignition tube is a disposable power source and can not be reused, the development cost is high, the production period is long, the development of a large number of reliability increase tests is greatly limited, and the improvement of the number of test samples is restricted.
2) The electric ignition pipe during operation can produce a large amount of combustion products, including residue and toxic gas, the branch passageway that becomes thrust mechanism on the one hand blocks up easily, all need wash the vent line of test piece after experimental at every turn, prolongs experimental period by a wide margin, reduces test efficiency, and on the other hand also can reduce by a wide margin and need used repeatedly's variable thrust mechanism's life-cycle, has restricted the repetition of reliability increase test and has developed, and exhaust toxic gas does not also do benefit to the environmental protection simultaneously.
These problems ultimately result in variable thrust mechanism release reliability that is not satisfactory for the overall system.
Disclosure of Invention
In view of the above, an object of the present invention is to provide a variable thrust mechanism opening reliability growth test apparatus for a yaw pitch engine, which ensures that a large number of repeated variable thrust mechanism opening reliability growth tests are performed, thereby realizing the increase in the opening reliability of the variable thrust mechanism.
The device for testing the opening reliability growth of the variable thrust mechanism of the yaw pitching engine comprises a support (1), a release pin (3), a locking pin (4), a pin spring (5), a release spring (6), a first test line (7), a second test line (8), a three-way joint (11), a high-pressure air source, a feedback module and an electric air valve;
support (1) hugs closely the lower surface mounting of baffle (2), and support (1) is inside to have two mutually perpendicular's interior passageway: a first channel (14) of the shape of a straight line and a second channel of the shape of a Y; the second channel has a main channel (15) and two branch channels (12) communicated with the main channel (15); the main channel (15) of the second channel is vertically intersected with the first channel (14), and the tail end of the main channel (15) of the second channel is communicated to the outside of the support (1); two branch channels (12) of the second channel are respectively connected to two joints of the three-way joint (11) through an inflation pipeline, and the other joint of the three-way joint (11) is connected with a high-pressure air source through an electric air valve;
the locking pin (4) is arranged in the first channel (14), the head of the locking pin (4) extends out of the first channel (14) and can be inserted into a baffle pin hole (16) of the baffle (2);
the release pin (3) is arranged in the main channel (15), and the bottom of the locking pin (4) is laterally propped against the release pin (3); the pin spring (5) is sleeved on the locking pin (4) and is in a compressed state;
the release spring (6) is arranged in a hole groove formed in the upper surface of the support (1) in a compressed state;
the lower surface of the baffle (2) and the corresponding position of the upper surface of the support (1) are respectively fixed with a red copper sheet, and the two red copper sheets are connected with a second millisecond watch through two second test lines (8) to form a loop;
fixing a first test line (7) outside a baffle pin hole (16) where the release pin (3) is located, wherein the first test line (7) crosses the baffle pin hole (16); two ends of the first test line (7) are connected with a first millisecond meter to form a loop;
the feedback module is respectively connected with the electric air valve and the two millisecond meters, and controls the two millisecond meters to start timing from 0 and receive timing time of the two millisecond meters when the electric air valve is opened.
Furthermore, the head of the first channel (14) is in a closed shape, so that the head of the locking pin (4) is allowed to extend out, and the tail of the locking pin (4) is clamped.
Further, the tail part of the first channel (14) is screwed.
The invention has the following beneficial effects:
the testing device provided by the invention adopts the high-pressure air source as the power for releasing the pin, ensures that a great amount of repeated development of the release reliability growth test of the variable thrust mechanism is ensured, and realizes the reliability growth of the opening of the variable thrust mechanism; by setting test lines and a millisecond watch test at the release pin and lock pin exit.
Drawings
FIG. 1 is a schematic diagram of a variable thrust mechanism opening reliability growth test apparatus of the present invention;
FIG. 2 is a schematic structural diagram of the variable thrust mechanism opening reliability increase test device of the present invention;
FIG. 3 is a view C-C of FIG. 2; the device comprises a support 1, a baffle 2, a release pin 3, a locking pin 4, a pin spring 5, a release spring 6, a test line 7, a test line 1, a test line 8, a copper sheet 9, an inflation pipeline 10, a tee joint 11, a branch channel 12, a rotating shaft 13, a first channel 14, a main channel 15 and a baffle pin hole 16.
Detailed Description
The invention is described in detail below by way of example with reference to the accompanying drawings.
As shown in fig. 1, 2 and 3, the variable thrust mechanism opening reliability growth test device of the invention comprises a support 1, a release pin 3, a locking pin 4, a pin spring 5, a release spring 6, a first test line 7, a second test line 8, a three-way joint 11, a high-pressure air source, a feedback module and an electric air valve.
The lower surface mounting of baffle 2 is hugged closely to support 1, and support 1 is inside to have two mutually perpendicular's interior passageway: a first channel 14 shaped like a straight line and a second channel shaped like a Y; the second channel has a main channel 15 and two branch channels 12 communicated with the main channel 15; the main channel 15 of the second channel is vertically crossed with the first channel 14, and the tail end of the main channel 15 of the second channel is communicated to the outside of the support 1; two branch channels 12 of the second channel are respectively connected to two joints of a three-way joint 11 through an inflation pipeline, and the other joint of the three-way joint 11 is connected with a high-pressure air source through an electric air valve.
The locking pin 4 is arranged in a first channel 14 in a straight line shape in the support 1, and the head of the locking pin 4 extends out of the first channel 14 and can be inserted into a baffle pin hole 16 of the baffle plate 2; the head of the first channel 14 is in a closed shape, so that the head of the locking pin 4 can be allowed to extend out, and when the locking pin 4 extends forwards, the tail of the locking pin 4 can be clamped in a protruding mode, and the locking pin is prevented from falling out of the head of the first channel 14; the rear of the first channel 14 is screwed down and prevents the locking pin 4 from sliding out of the rear of the first channel 14.
The release pin 3 is arranged in a main channel 15 of the Y-shaped second channel, and the bottom of the locking pin 4 is laterally propped against by the release pin 3; the pin spring 5 is sleeved on the locking pin 4 and is in a compressed state, so that the locking pin 4 has elastic force of retreating from the baffle pin hole.
The release spring 6 is installed in a hole groove formed on the upper surface of the support 1 and is placed between the barrier 2 and the support 1 in a compressed state, so that the barrier 2 has an opening elastic force.
The lower surface of the baffle 2 and the upper surface of the support 1 are respectively fixed with a red copper sheet, and the two red copper sheets are connected with a second millisecond watch through two second test lines 8 to form a loop.
A first test line 7 is fixed outside the baffle pin hole 16 where the release pin 3 is located in an adhesive mode, and the first test line 7 crosses the baffle pin hole 16; the first testing line 7 is connected to the first millisecond meter at two ends to form a loop.
The feedback module is respectively connected with the electric air valve and the two millisecond meters, and controls the two millisecond meters to start timing from 0 and receive timing time of the two millisecond meters when the electric air valve is opened.
The working process of the variable thrust mechanism opening reliability growth test device is as follows:
a high-pressure gas source is adopted as a power device, and the high-pressure gas stored in the high-pressure gas source forms constant 3MPa high-pressure gas flow through a pressure reducing valve. The air current flows through the electric air valve through the inflation pipeline, and a tester provides pulse air current for the release pin 3 by controlling the opening of the electric air valve. At the moment when the electric air valve is opened, the feedback module controls the two millisecond meters to start timing;
the pulse airflow enters the variable thrust mechanism test piece through the inflation pipeline, the kinetic energy carried by the airflow forces the release pin 3 to fly out of the support 1, so that the lock pin 4 is unlocked, the lock pin 4 retreats from the baffle pin hole 16 under the action of the pin spring 5, and the baffle 2 overturns around the rotating shaft 13 under the action of the release spring 6, so that the release of the baffle 2 is realized.
When the release pin 3 flies out, the loop of the first test line 7 is broken, and the first millisecond meter stops timing; when the baffle 2 is released, the two red copper sheets are separated, the loop of the second test line 8 is broken, and the second millisecond meter stops timing; the feedback module obtains the timing of the first millisecond meter and the timing of the second millisecond meter, so that the release pin flying-out time and the baffle release time are obtained, and the single variable thrust mechanism opening reliability increase test is finished.
A recovery device is placed on the ground at the front end of the flying-out direction of the release pin 3, and the release pin 3 is recovered after flying out; the locking pin 4 is inside the mechanism after being withdrawn. And repeatedly reloading the recovered release pin 3 and the recovered locking pin 4 to realize the recovery of the test device.
And repeating the test links until the internal pressure of the high-pressure gas cylinder is lower than 3MPa or the test is finished. When the internal pressure of the high-pressure gas cylinder is lower than 3MPa, the replaceable high-pressure gas cylinder continues the test.
The high-pressure gas cylinder is used as a reusable power source, the pressure of a provided gas source is continuously reduced in the process of repeated use, the variable thrust mechanism can be reliably opened before the pressure is reduced to 3MPa, the expected purpose of a reliability increase test is realized, through preliminary estimation, a 50L high-pressure gas cylinder can reliably complete the reliability increase test of at least 50 times of opening of the variable thrust mechanism, the cost of re-inflation is far lower than that of 100 electric ignition tubes, the electric ignition tubes are controlled initiating devices, the period of purchasing, producing and transporting raw materials is long, the smooth development of the test is limited, the high-pressure gas cylinder is wide in source, convenient to purchase and beneficial to the development of the test, the rated opening pressure of the variable thrust mechanism is 3MPa, the pressure of high-pressure gas generated by the electric ignition tubes is 25 MPa-50 MPa, the high-pressure gas provided by the high-pressure gas cylinder is 3MPa, therefore, the high-pressure gas cylinder is used as the gas source, the strict test condition is provided, the reliability increase of the variable thrust mechanism is beneficial to the development of the high-temperature gas cylinder, the high-temperature gas cylinder can greatly increase the reliability of the high-pressure gas cylinder, the high-pressure gas cylinder can greatly reduce the reliability of the high-temperature gas-pressure gas-generating gas-generating-gas-source, the high-pressure gas-.
In summary, the above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (3)
1. The device for testing the opening reliability growth of the variable thrust mechanism of the yaw pitching engine is characterized by comprising a support (1), a release pin (3), a locking pin (4), a pin spring (5), a release spring (6), a first test line (7), a second test line (8), a three-way joint (11), a high-pressure air source, a feedback module and an electric air valve;
support (1) hugs closely the lower surface mounting of baffle (2), and support (1) is inside to have two mutually perpendicular's interior passageway: a first channel (14) of the shape of a straight line and a second channel of the shape of a Y; the second channel has a main channel (15) and two branch channels (12) communicated with the main channel (15); the main channel (15) of the second channel is vertically intersected with the first channel (14), and the tail end of the main channel (15) of the second channel is communicated to the outside of the support (1); two branch channels (12) of the second channel are respectively connected to two joints of the three-way joint (11) through an inflation pipeline, and the other joint of the three-way joint (11) is connected with a high-pressure air source through an electric air valve;
the locking pin (4) is arranged in the first channel (14), the head of the locking pin (4) extends out of the first channel (14) and can be inserted into a baffle pin hole (16) of the baffle (2);
the release pin (3) is arranged in the main channel (15), and the bottom of the locking pin (4) is laterally propped against the release pin (3); the pin spring (5) is sleeved on the locking pin (4) and is in a compressed state;
the release spring (6) is arranged in a hole groove formed in the upper surface of the support (1) in a compressed state;
the lower surface of the baffle (2) and the corresponding position of the upper surface of the support (1) are respectively fixed with a red copper sheet, and the two red copper sheets are connected with a second millisecond watch through two second test lines (8) to form a loop;
fixing a first test line (7) outside a baffle pin hole (16) where the release pin (3) is located, wherein the first test line (7) crosses the baffle pin hole (16); two ends of the first test line (7) are connected with a first millisecond meter to form a loop;
the feedback module is respectively connected with the electric air valve and the two millisecond meters, and controls the two millisecond meters to start timing from 0 and receive timing time of the two millisecond meters when the electric air valve is opened.
2. The variable thrust mechanism opening reliability growth test device of a yaw pitch engine according to claim 1, characterized in that the head of the first channel (14) is in a shape of a slot, allowing the head of the locking pin (4) to extend out and seizing the tail of the locking pin (4).
3. The variable thrust mechanism opening reliability growth test apparatus of a yaw pitch engine of claim 1, wherein the first channel (14) is screwed at the rear.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811384201.0A CN109506941B (en) | 2018-11-20 | 2018-11-20 | Variable thrust mechanism opening reliability growth test device of yaw pitching engine |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811384201.0A CN109506941B (en) | 2018-11-20 | 2018-11-20 | Variable thrust mechanism opening reliability growth test device of yaw pitching engine |
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| CN109506941A CN109506941A (en) | 2019-03-22 |
| CN109506941B true CN109506941B (en) | 2020-07-14 |
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