CN106441905A - Signal transmission device with rotor acting as benchmark - Google Patents
Signal transmission device with rotor acting as benchmark Download PDFInfo
- Publication number
- CN106441905A CN106441905A CN201610674910.7A CN201610674910A CN106441905A CN 106441905 A CN106441905 A CN 106441905A CN 201610674910 A CN201610674910 A CN 201610674910A CN 106441905 A CN106441905 A CN 106441905A
- Authority
- CN
- China
- Prior art keywords
- cooling
- rotor
- electrical feedthrough
- compound
- tracheae
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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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
Abstract
The invention discloses a signal transmission device with a rotor acting as a benchmark, and belongs to the technical field of aero-engine signal transmission. An electric guiding device is installed in an electric guiding device installing base. The electric guiding device installing base is connected with a conversion base which is installed on a rotor positioning shaft through a bearing. One end of the rotor positioning shaft is maintained to be contacted with the internal cavity of the conversion base through sealing sleeve teeth, and the other end is fixed on a turbine disc through a positioning bolt. A composite cooling sleeve cools the rotor positioning shaft, the electric guiding device, the electric guiding device installing base and the conversion base. The rotor positioning shaft is the benchmark of the whole system device. A test lead is led to the axial hole of the turbine disc along the wall surface of the rotor to penetrate through the rotor positioning shaft to be connected with the rotor of the electric guiding device of the rear end. The stator lead connected with the electric guiding device penetrates through a support plate to the outside of an engine through a lead tube. The signal transmission device has high tolerance capacity of rotor and stator bidirectional dynamic displacement difference, and the system adopts the modular structure so that disassembling and assembling are convenient without risk to the engine, the construction cost is low and the range of application is wide.
Description
Technical field
The invention belongs to aero-engine signal transmission technology field, be specifically related to a kind of signal on the basis of rotor and pass
Defeated device.
Background technology
Aero-engine hot end rotor part wall parameter testing be in reseach of engine must faced by problem, domestic at present
Main by filling signal transmission system at cold end, the way that sensor lead causes cold end from hot junction completes hot end rotor test.
Some engine structures do not possess the condition that signal transmission system is placed the cold end of engine, if dish is solid construction, do not draw
Thread path；Cold end, hot end rotor rotating speed be not equal.
Domestic also do not fill signal transmission system in hot junction, turn, stator without relative adjective-centre structure, rotating speed 10000rpm with
On, use the precedent that electrical feedthrough is successfully tested.Non-contacting telemetry system is used to carry out signal transmission under this critical conditions
There is successful possibility, but cost is high and precision is on the low side.
Content of the invention
The purpose of the present invention：In order to solve the problems referred to above, the present invention proposes the transmission of a kind of signal on the basis of rotor
Device, use turn, the technical scheme of signal transmission system on the basis of rotor for the stator not adjective-centre structure, solve dynamic turn,
A stator two-way PT positional tolerance difficult problem.
Technical scheme：A kind of signal transmitting apparatus on the basis of rotor, including：Bolt, cooling water
Export pipeline, two fairleads, Compound cooling set, flexible bearing torque frame, stator lead-in wire, Compound cooling set cover plate, pressure compensation opening,
Electrical feedthrough, electrical feedthrough mounting seat, set tooth of obturaging, switch base, cooling gas collector ring, rotor fixed position axle, test lead, first multiple
Close pipeline and the second composite pipeline；
Rotor fixed position axle is internally provided with manhole, and electrical feedthrough is arranged in electrical feedthrough mounting seat, electrical feedthrough mounting seat
Being connected in switch base, described switch base is arranged on rotor fixed position axle by bearing, and rotor fixed position axle is near conversion base
One end of seat is connected with set tooth of obturaging, and rotor fixed position axle other end surface configuration has comb toothing, and is fixed by bolt
On the turbine disk；The test lead being connected with rotor wall face parameter sensors pass through described rotor fixed position axle and obturage set tooth with after
The rotor of the electrical feedthrough of end connects；
Described rotor fixed position axle, electrical feedthrough, electrical feedthrough mounting seat and switch base are arranged in Compound cooling set, described multiple
Closing coolant jacket one end and being provided with Compound cooling set cover plate, described Compound cooling set and Compound cooling set cover plate are respectively arranged with
Thermal insulation layer and cooling layer, and the cooling layer connection of Compound cooling set and Compound cooling set both cover plates；Described Compound cooling set is logical
Cross flexible bearing torque frame to be connected on engine stator, be capable of turning, stator radial tolerance displacement；
Described Compound cooling set cover plate is provided with pressure compensation opening, and described Compound cooling set sets near comb toothing position
Be equipped with cooling gas collector ring, described cooling gas collector ring coordinates with comb toothing, described Compound cooling sleeve body sidewall with described
Coolant outlet pipeline, fairlead, the first composite pipeline and the second composite pipeline coordinate perforate；Described first composite pipeline includes
First cooling water pipe and electrical feedthrough cooling tracheae, described second composite pipeline includes the second cooling water pipe and collector ring cooling gas
Pipe, described electrical feedthrough cooling tracheae passes through cooling gas in Compound cooling set, and electrical feedthrough cooling tracheae and cools down electrical feedthrough,
Collector ring cooling tracheae passes through Compound cooling set and is connected with cooling gas collector ring, described first cooling water pipe and the second cooling water pipe
It is connected with cooling layer respectively.
Preferably, described collector ring cooling tracheae is divided into symmetrical two branch road collector rings cooling tracheae, and described two
Individual branch road collector ring cooling tracheae is connected with cooling gas collector ring respectively.
Preferably, described electrical feedthrough cooling tracheae is divided into symmetrical two branch road electrical feedthroughs cooling tracheae, and described two
Electrical feedthrough is cooled down by cooling gas in individual branch road electrical feedthrough cooling tracheae respectively.
Preferably, described fairlead is double-decker, and internal layer is provided with stator lead-in wire, and outer layer is provided with stator lead-in wire cooling
Gas passage.
Preferably, described bearing and switch base axial gap are installed.
Preferably, described switch base is connected with Compound cooling set by cooling gas collector ring.
Preferably, the inner chamber matched in clearance of described obturage set tooth and electrical feedthrough mounting seat.
Beneficial effects of the present invention：There is good cooling effect, meet electrical feedthrough working environment；Have dynamic turn, quiet
The axial displacement height fault tolerance of son；There is dynamic turn, stator radial deformation height fault tolerance；Do not change primary motivation assembly technology
Under the conditions of, use modular organization, fill, tear open conveniently, high efficient and reliable in repeatedly testing.
Brief description
Fig. 1 is the structural representation of a preferred embodiment of a kind of signal transmitting apparatus on the basis of rotor of the present invention；
Fig. 2 is the side view of a preferred embodiment of a kind of signal transmitting apparatus on the basis of rotor of the present invention；
Fig. 3 is rotor fixed position axle construction and the scheme of installation of embodiment illustrated in fig. 1；
Fig. 4 be shown implement row turn, stator axial displacement dynamic tolerance design bearing scheme of installation；
Wherein, 1-sensor, the 2-turbine disk, 3-bolt, 4-coolant outlet pipeline, 5-fairlead, 6-composite cold
But overlapping, the flexible bearing torque frame of 7-, 8-stator goes between, and 9-Compound cooling overlaps cover plate, and 10-pressure compensation opening, 11-electrical feedthrough, 12-draws electricity
Device mounting seat, 13-obturages set tooth, 14-switch base, and 15-cools down gas collector ring, 16-rotor fixed position axle, 17-test lead,
18-the first composite pipeline, 19-the second composite pipeline, 20-manhole, 21-bearing, 22-comb toothing, 23-thermal insulation layer, 24-
Cooling layer, 25-the first cooling water pipe, 26-electrical feedthrough cools down tracheae, 27-the second cooling water pipe, and 28-collector ring cools down tracheae,
29-stator lead-in wire cooling gas passage, 30-branch road collector ring cools down tracheae.
Detailed description of the invention
Purpose, technical scheme and advantage for making the present invention implement are clearer, below in conjunction with in the embodiment of the present invention
Accompanying drawing, the technical scheme in the embodiment of the present invention is further described in more detail.In the accompanying drawings, identical from start to finish or class
As label represent same or similar element or there is the element of same or like function.Described embodiment is the present invention
A part of embodiment, rather than whole embodiments.The embodiment describing below with reference to accompanying drawing is exemplary, it is intended to use
It in the explanation present invention, and is not considered as limiting the invention.Based on the embodiment in the present invention, ordinary skill people
The every other embodiment that member is obtained under the premise of not making creative work, broadly falls into the scope of protection of the invention.Under
Face combines accompanying drawing and is described in detail embodiments of the invention.
In describing the invention, it is to be understood that term " " center ", " longitudinally ", " horizontal effect is reliable.
Brief description
Fig. 1 is the structural representation of a preferred embodiment of a kind of signal transmitting apparatus on the basis of rotor of the present invention；
Fig. 2 is the side view of a preferred embodiment of a kind of signal transmitting apparatus on the basis of rotor of the present invention；
Fig. 3 is rotor fixed position axle construction and the scheme of installation of embodiment illustrated in fig. 1；
Fig. 4 be shown implement row turn, stator axial displacement dynamic tolerance design bearing scheme of installation；
Wherein, 1-sensor, the 2-turbine disk, 3-bolt, 4-coolant outlet pipeline, 5-fairlead, 6-composite cold
But overlapping, the flexible bearing torque frame of 7-, 8-stator goes between, and 9-Compound cooling overlaps cover plate, and 10-pressure compensation opening, 11-electrical feedthrough, 12-draws electricity
Device mounting seat, 13-obturages set tooth, 14-switch base, and 15-cools down gas collector ring, 16-rotor fixed position axle, 17-test lead,
18-the first composite pipeline, 19-the second composite pipeline, 20-manhole, 21-bearing, 22-comb toothing, 23-thermal insulation layer, 24-
Cooling layer, 25-the first cooling water pipe, 26-electrical feedthrough cools down tracheae, 27-the second cooling water pipe, and 28-collector ring cools down tracheae,
29-stator lead-in wire cooling gas passage, 30-branch road collector ring cools down tracheae.
Detailed description of the invention
Purpose, technical scheme and advantage for making the present invention implement are clearer, below in conjunction with in the embodiment of the present invention
Accompanying drawing, the technical scheme in the embodiment of the present invention is further described in more detail.In the accompanying drawings, identical from start to finish or class
As label represent same or similar element or there is the element of same or like function.Described embodiment is the present invention
A part of embodiment, rather than whole embodiments.The embodiment describing below with reference to accompanying drawing is exemplary, it is intended to use
It in the explanation present invention, and is not considered as limiting the invention.Based on the embodiment in the present invention, ordinary skill people
The every other embodiment that member is obtained under the premise of not making creative work, broadly falls into the scope of protection of the invention.Under
Face combines accompanying drawing and is described in detail embodiments of the invention.
In describing the invention, it is to be understood that term " " center ", " longitudinally ", " laterally ", "front", "rear",
The orientation of the instruction such as "left", "right", " vertically ", " level ", " top ", " end " " interior ", " outward " or position relationship are for based on accompanying drawing institute
The orientation showing or position relationship, be for only for ease of the description present invention and simplify description, rather than the dress of instruction or hint indication
Put or element must have specific orientation, with specific azimuth configuration and operation, therefore it is not intended that protect the present invention
The restriction of scope.
Below in conjunction with the accompanying drawings embodiments of the invention are described in detail, refer to Fig. 1 to Fig. 4；
A kind of signal transmitting apparatus on the basis of rotor, including：Bolt the 3rd, coolant outlet pipeline the 4th, two draw
Spool the 5th, Compound cooling set the 6th, flexible bearing torque frame the 7th, stator lead-in wire the 8th, Compound cooling set cover plate the 9th, pressure compensation opening the 10th, electrical feedthrough
11st, the 14th, electrical feedthrough mounting seat the 12nd, set tooth the 13rd, switch base of obturaging cools down gas collector ring the 15th, rotor fixed position axle the 16th, test lead
17th, the first composite pipeline 18 and the second composite pipeline 19；
Rotor fixed position axle 16 is internally provided with manhole 20, and electrical feedthrough 11 is arranged in electrical feedthrough mounting seat 12, draws electricity
Device mounting seat 12 is connected with switch base 14, and switch base 14 is arranged on rotor fixed position axle 16 by bearing 21, rotor fixed position
Axle 16 is provided with set tooth 13 of obturaging near one end of switch base 14, the interior cavity gap of obturage set tooth 13 and electrical feedthrough mounting seat 12
Coordinate；The other end surface configuration of rotor fixed position axle 16 has comb toothing 22, and is fixed on the turbine disk 2 by bolt 3,
Rotor fixed position axle 16 is positioned with the turbine disk 2 axle center hole by seam, and rotor fixed position axle 16 is the benchmark of whole system device, rotor
The test lead 17 of wall face parameter sensors 1 causes at the turbine disk 2 axle center hole along rotor wall face, passes through the circle of rotor fixed position axle 16
Shape through hole 20 and set tooth 13 of obturaging are connected with the rotor of the electrical feedthrough 11 of rear end, and the stator lead-in wire 8 that electrical feedthrough 11 is connected is through lead-in wire
Outside pipe 5 is through support plate to engine.With rotor fixed position axle 16 as the benchmark of whole system, system sets around rotor fixed position axle 16
Meter, mass of system power acts on rotor fixed position axle, and this cross force is the power of a constant direction, does not produce exciting effect to rotor,
On complete machine oscillation without impact.
Rotor fixed position axle the 16th, electrical feedthrough the 11st, electrical feedthrough mounting seat 12 and switch base 14 are arranged in Compound cooling set 6,
And switch base 14 is connected with Compound cooling set 6 by cooling gas collector ring 15, Compound cooling set 6 is provided with multiple for one end fits
Closing the tube structure of coolant jacket cover plate 9, Compound cooling set 6 and Compound cooling set both cover plates 9 are provided with thermal insulation layer 23 and cooling
Layer 24, and both cooling layers 24 connect；Compound cooling set 6 is connected on engine stator by flexible bearing torque frame 7, Neng Goushi
Now turn, stator radial tolerance displacement.
Compound cooling set cover plate 9 is provided with pressure compensation opening 10, and Compound cooling set 6 bottoms are provided with cooling gas collector ring
15, cooling gas collector ring 15 coordinates with comb toothing 22, Compound cooling set 6 cylinder lateral walls and coolant outlet pipeline the 4th, fairlead
5th, the first composite pipeline 18 and the second composite pipeline 19 coordinate perforate；First composite pipeline 18 includes the first cooling water pipe 25 and draws
Electrical equipment cools down tracheae 26, and the second composite pipeline 19 includes the second cooling water pipe 27 and collector ring cooling tracheae 28, and fairlead 5 includes
Stator lead-in wire 8 and stator lead-in wire cooling gas passage 29, electrical feedthrough cooling tracheae 26 passes through Compound cooling set 6 and carries out cold to electrical feedthrough
But, collector ring cooling tracheae 28 is connected through Compound cooling set 6 with cooling gas collector ring 15, and the first cooling water pipe 25 and second is cold
But water pipe 27 is connected with cooling layer 24 respectively；
Stator lead-in wire cooling gas passage 29 from fairlead 5 for the cooling gas introduces, and cools down stator lead-in wire 8, cooling
Electrical feedthrough cooling tracheae 26 from the first composite pipeline 18 for the gas enters Compound cooling set 6, and electrical feedthrough cooling tracheae 26 is divided into
Symmetrical two branch road electrical feedthroughs cooling tracheae, cools down to electrical feedthrough 11 respectively.Cooling gas is from the second composite pipeline
The collector ring cooling tracheae 28 of 19 enters in Compound cooling set 6, and collector ring cooling tracheae 28 is divided into symmetrical two
Road collector ring cooling tracheae 30 is connected with cooling gas collector ring 15 respectively, is formed cold at the comb toothing 22s of rotor fixed position axle 16
But air curtain, while cooling rotor fixed position axle 16, is also prevented from hot gas and pours into Compound cooling set 6.
Cooling gas after cooling is gathered at Compound cooling set cover plate 9, enters its pressure compensation opening 10, discharges Compound cooling set
6, and the hole discharge engine of support plate is entered through fairlead 5, cooling twice is formed to fairlead 5.
Cool down the second cooling water pipe of the first cooling water pipe 25 through the first composite pipeline 18 for the water and the second composite pipeline 19
27, enter the cooling layer 24 of Compound cooling set 6, equipment in whole Compound cooling set 6 is cooled, the water after cooling leads to
Cross the coolant outlet pipeline 4 through support plate and discharge engine.
Compound cooling set 6 and Compound cooling set cover plate 9 use asbestos to make thermal insulation layer, and the complex method in conjunction with circulating water is cold
But, cooling effect is good, and during actual measurement, Compound cooling set 6 and Compound cooling overlap cover plate 9 good seal.
It is axially free state that two bearings on rotor fixed position axle 16 use inner ring, and outer shroud dynamic displacement limits value is
4mm, turn, stator axial deformation fault tolerance be self adaptation in 4mm；Flexible bearing torque frame 8 uses thin-wall stainless steel mesh design,
Turn, stator radial tolerance displacement actual measurement reaches 3mm, and two on rotor fixed position axle 16 bearing uses the design of inner ring delocalization structure,
Have turn, stator axial deformation height fault tolerance, fault tolerance can by regulate outer race locating surface realize stepless adjustable；Soft
Property bearing torque frame 7 can tolerance turn, stator radial deformation, it is also possible to sinking support effect is played to rotor fixed position axle 16.
The present invention has overturned traditional signal transfer mode on the basis of rotor, have turn, the two-way dynamic displacement of stator
The high fault tolerance of difference, system uses modular organization, and easy accessibility, to engine devoid of risk.Cost is low, applied widely.
Finally it is to be noted：Above example only in order to technical scheme to be described, is not intended to limit.To the greatest extent
The present invention has been described in detail by pipe with reference to previous embodiment, it will be understood by those within the art that：It is still
Technical scheme described in foregoing embodiments can modify, or carry out equivalent replacing to wherein portion of techniques feature
Change；And these modifications or replacement, do not make the essence of appropriate technical solution depart from the essence of various embodiments of the present invention technical scheme
God and scope.
Claims (7)
1. the signal transmitting apparatus on the basis of rotor, it is characterised in that include：Bolt (3), cooling water outlet pipe
Road (4), two fairleads (5), Compound cooling set (6), flexible bearing torque frame (7), stator lead-in wire (8), Compound cooling set cover plates
(9), pressure compensation opening (10), electrical feedthrough (11), electrical feedthrough mounting seat (12), set tooth (13) of obturaging, switch base (14), cooling
Gas collector ring (15), rotor fixed position axle (16), test lead (17), the first composite pipeline (18) and the second composite pipeline (19)；
Rotor fixed position axle (16) is internally provided with manhole (20), and electrical feedthrough (11) is arranged in electrical feedthrough mounting seat (12),
Electrical feedthrough mounting seat (12) is connected in switch base (14), and it is fixed that described switch base (14) is arranged on rotor by bearing (21)
On position axle (16), rotor fixed position axle (16) is connected with set tooth (13) of obturaging near one end of switch base (14), rotor fixed position axle
(16) other end surface configuration has comb toothing (22), and is fixed on the turbine disk by bolt (3)；With rotor wall face ginseng
The test lead (17) that number sensor is connected passes through rotor fixed position axle (16)) and obturage set tooth (13) and the electrical feedthrough (11) of rear end
Rotor connect；
Described rotor fixed position axle (16), electrical feedthrough (11), electrical feedthrough mounting seat (12) and switch base (14) are arranged on composite cold
But overlapping in (6), described Compound cooling set (6) one end is provided with Compound cooling set cover plate (9), described Compound cooling set (6) and answering
Both are respectively arranged with thermal insulation layer (23) and cooling layer (24), and Compound cooling set (6) and Compound cooling to close coolant jacket cover plate (9)
Set cover plate (9) both cooling layers (24) connection；Described Compound cooling set (6) is connected to engine by flexible bearing torque frame (7)
On stator, be capable of turn, stator radial tolerance displacement；
Described Compound cooling set cover plate (9) is provided with pressure compensation opening (10), and described Compound cooling set (6) is near comb toothing
(22) position is provided with cooling gas collector ring (15), and described cooling gas collector ring (15) coordinates with comb toothing (22), described
Compound cooling set (6) cylinder lateral wall and described coolant outlet pipeline (4), fairlead (5), the first composite pipeline (18) and second
Composite pipeline (19) coordinates perforate；Described first composite pipeline (18) includes the first cooling water pipe (25) and electrical feedthrough cooling tracheae
(26), described second composite pipeline (19) includes the second cooling water pipe (27) and collector ring cooling tracheae (28), described electrical feedthrough
Cooling tracheae (26) passes through cooling gas in Compound cooling set (6), and electrical feedthrough cooling tracheae (26) and cools down electrical feedthrough, collection
Compression ring cooling tracheae (28) passes through Compound cooling set (6) and is connected with cooling gas collector ring (15), described first cooling water pipe (25)
It is connected with cooling layer (24) respectively with the second cooling water pipe (27).
2. a kind of signal transmitting apparatus on the basis of rotor according to claim 1, it is characterised in that：Described collector ring
Cooling tracheae (28) is divided into symmetrical two branch road collector rings cooling tracheae (30), and said two branch road collector ring cools down gas
Pipe (30) is connected with cooling gas collector ring (15) respectively.
3. a kind of signal transmitting apparatus on the basis of rotor according to claim 1, it is characterised in that：Described electrical feedthrough
Cooling tracheae (26) is divided into symmetrical two branch road electrical feedthroughs cooling tracheae, in said two branch road electrical feedthrough cooling tracheae
Cooling gas respectively electrical feedthrough (11) is cooled down.
4. a kind of signal transmitting apparatus on the basis of rotor according to claim 1, it is characterised in that：Described fairlead
(5) being double-decker, internal layer is provided with stator lead-in wire (8), and outer layer is provided with stator lead-in wire cooling gas passage (29).
5. a kind of signal transmitting apparatus on the basis of rotor according to claim 1, it is characterised in that：Described bearing
(21) install with switch base (14) axial gap.
6. a kind of signal transmitting apparatus on the basis of rotor according to claim 1, it is characterised in that：Described conversion base
Seat (14) is connected with Compound cooling set (6) by cooling gas collector ring (15).
7. a kind of signal transmitting apparatus on the basis of rotor according to claim 1, it is characterised in that：Described envelope
Tight set tooth (13) and the inner chamber matched in clearance of electrical feedthrough mounting seat (12).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610674910.7A CN106441905A (en) | 2016-08-16 | 2016-08-16 | Signal transmission device with rotor acting as benchmark |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610674910.7A CN106441905A (en) | 2016-08-16 | 2016-08-16 | Signal transmission device with rotor acting as benchmark |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106441905A true CN106441905A (en) | 2017-02-22 |
Family
ID=58181563
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610674910.7A Pending CN106441905A (en) | 2016-08-16 | 2016-08-16 | Signal transmission device with rotor acting as benchmark |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106441905A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107402032A (en) * | 2017-07-12 | 2017-11-28 | 中国航发沈阳发动机研究所 | A kind of multiple spot conversion equipment of revolving part wall parameter measurement |
| CN114964787A (en) * | 2022-05-12 | 2022-08-30 | 中国航发沈阳发动机研究所 | Stress measurement structure for whole-machine low-vortex rotor blade of aero-engine |
| CN115342774A (en) * | 2022-10-20 | 2022-11-15 | 北京航天动力研究所 | Strain measurement system for high-speed flexible rotor turbine disc of liquid rocket engine |
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| CN114964787A (en) * | 2022-05-12 | 2022-08-30 | 中国航发沈阳发动机研究所 | Stress measurement structure for whole-machine low-vortex rotor blade of aero-engine |
| CN114964787B (en) * | 2022-05-12 | 2023-09-22 | 中国航发沈阳发动机研究所 | Aeroengine complete machine low vortex rotor blade stress measurement structure |
| CN115342774A (en) * | 2022-10-20 | 2022-11-15 | 北京航天动力研究所 | Strain measurement system for high-speed flexible rotor turbine disc of liquid rocket engine |
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Application publication date: 20170222 |