CN208918700U - A kind of microminiature centripetal turbine jet engine - Google Patents
A kind of microminiature centripetal turbine jet engine Download PDFInfo
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- CN208918700U CN208918700U CN201821321737.3U CN201821321737U CN208918700U CN 208918700 U CN208918700 U CN 208918700U CN 201821321737 U CN201821321737 U CN 201821321737U CN 208918700 U CN208918700 U CN 208918700U
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Abstract
The utility model relates to turbogenerator technical fields, and in particular to a kind of microminiature centripetal turbine jet engine.Its main feature is that including axis, centrifugal compressor, centrifugal compressor, diffuser, air intake duct, centripetal turbine, nozzle ring and jet pipe, sleeve body is equipped with by bearing on the axis, sleeve body front end is connected with diffuser, sleeve body rear end is connected with nozzle ring, combuster is set between diffuser and nozzle ring, and combustion chamber periphery is provided with middle casing, is provided with evaporation tube in combustion chamber；The bearing is mounted on the bearing spider in sleeve body, oilhole is provided on bearing spider, oilhole is connected with the cavity that sleeve body and axis are formed, and fuel nozzle and oil inlet are additionally provided on sleeve body, fuel nozzle and oil inlet are connected with cavity, and fuel nozzle protrudes into evaporation tube.Requirement which reduce engine to bearing effectively raises the service life of engine, greatly reduces the maintenance cost of engine.
Description
Technical field
The utility model relates to turbogenerator technical fields, and in particular to a kind of microminiature centripetal turbine jet is started
Machine.
Background technique
Micro turbojet engine is to mix combining combustion production with fuel oil in the combustion chamber after overcompression using air as medium
Raw high-temperature high-pressure fuel gas, the power device of mechanical energy is converted chemical energy by turbine.By the Land use systems to its energy point
For turbojet, turbofan, turboprop, turboaxle motor.Micro Turbine Jet Engine
It is very widely used in ground force field, specific as follows, 1. power as middle-size and small-size aircraft, such as unmanned plane, target drone, target,
Guided missile, bait bullet, paraglider etc.；2. it is used as naval vessel, tank, the auxiliary power on large aircraft, such as air conditioning power, naval vessel part
Power, speedboat or small power generation power etc.；3. being used as heat source, hot gas source.Such as ice-melt snow melt, aerostatics inflation, power supply of camping is supplied
It warms up；4. it is used as small power generation power, if mobile radar generates electricity, emergent charging, the power etc. of headlamp generator；5. various small
The power of type machinery, target infrared generator, military aerosol producer, electronic countermeasure chaff seeding device etc..
Inversely due to thrust ratio and structure size, big to realize for existing micro turbojet engine
Thrust ratio, it is necessary to bearing is able to achieve ultrahigh speed steady running, but tradition to the lubrication form of bearing there are certain limit,
When shaft revolving speed is excessively high, can bearing temperature be increased, bearing is caused easily to damage, so that industrial application is limited to, no
It is able to satisfy current miniaturization requirement.
Summary of the invention
Start the purpose of this utility model is that the deficiencies in the prior art is avoided to provide a kind of microminiature centripetal turbine jet
Machine, to solve problems of the prior art.
To achieve the above object, a kind of technical solution that the utility model is taken are as follows: microminiature centripetal turbine spray
Gas engine, its main feature is that including axis, the front end of axis is equipped with centrifugal compressor, be provided with outside centrifugal compressor diffuser and
Air intake duct, the rear end of axis are equipped with centripetal turbine, and centripetal turbine periphery is provided with nozzle ring, the setting of nozzle ring rear portion
There is a jet pipe, sleeve body is equipped with by bearing on the axis, sleeve body front end is connected with diffuser, after sleeve body
End is connected with nozzle ring, combuster is arranged between diffuser and nozzle ring, combustion chamber periphery is provided with middle case
Body is provided with evaporation tube in combustion chamber；The bearing is mounted on the bearing spider in sleeve body, is arranged on bearing spider
There is oilhole, oilhole is connected with the cavity that sleeve body and axis are formed, fuel nozzle and oil inlet are additionally provided on sleeve body,
Fuel nozzle and oil inlet are connected with cavity, and fuel nozzle protrudes into evaporation tube.
The axis front end is additionally provided with inlet cone, is equipped with turbine bushing on the outside of the centripetal turbine, described
Middle casing front end and air intake duct are fixedly linked with diffuser, and middle casing rear end is connected with jet pipe, jet pipe and turbine lining
Set is connected with nozzle ring, and preceding carbocyclic ring is provided between sleeve body front end and axis, and preceding carbocyclic ring passes through front apron and preceding carbocyclic ring
Housing is mounted on the sleeve of axis, and rear carbocyclic ring is provided between sleeve body rear end and axis, and rear carbocyclic ring passes through rear baffle and rear carbon
Ring housing is mounted on an axle, and the axis and centripetal turbine are structure as a whole.
The sleeve body front end is fixedly linked by screw and diffuser, and sleeve body rear end passes through screw and turbine
Guider is fixedly linked, and preceding spring is provided between preceding carbocyclic ring and preceding carbocyclic ring housing, is arranged between rear carbocyclic ring and rear carbocyclic ring housing
There is rear spring, the front apron is fixed and clamped by diffuser inward flange, and rear baffle is fixed by nozzle ring inward flange
It compresses.
Carbocyclic ring housing groove before corresponding shaft bearing is provided with is put on outside the preceding carbocyclic ring, outer race passes through preceding carbocyclic ring housing
Positioning, carbocyclic ring housing positioning pin before the location hole that preceding carbocyclic ring puts on corresponding preceding carbocyclic ring outside is provided with；Correspondence is put on outside carbocyclic ring afterwards
Bearing is provided with rear carbocyclic ring housing groove, and outer race is positioned by rear carbocyclic ring housing, and carbocyclic ring after corresponding to is put on outside rear carbocyclic ring
Location hole is provided with rear carbocyclic ring housing positioning pin, and the fuel nozzle is arranged on the sleeve body outside rear carbocyclic ring housing,
Oilhole is connected by rear carbocyclic ring housing with fuel nozzle, and fuel nozzle is connected by threaded hole with axle sleeve shell ontology, fuel oil spray
Inside cavity oil liquid is sprayed onto engine chamber evaporation tube by mouth.
It is separately provided for that four springs installation of preceding spring and rear spring is installed on the preceding carbocyclic ring and rear carbocyclic ring
Hole, preceding carbocyclic ring and rear carbocyclic ring generate pretightning force by preceding spring and rear spring respectively and realize sealing；Preceding carbocyclic ring and rear carbocyclic ring it is interior
Ring surface, which is divided equally, is provided with sealed groove, and fuel oil forms turbulent step pressure reducing inside sealed groove and realizes sealing；Preceding carbocyclic ring and
The gap of 0.01~0.04mm is set between carbocyclic ring internal diameter and axis afterwards, oil film can be generated under the action of oil by carbocyclic ring and holds up realization
Sealing；The range of preceding carbocyclic ring and rear carbocyclic ring work temperature are as follows: -120 DEG C of 500 DEG C of < T <, the range of pressure P: -0.8bar < P
< 75bar.
The nozzle ring includes nozzle ring inner housing, nozzle ring outer housing, nozzle ring inner casing
Body entrance is provided with nozzle ring entry guide vane, and nozzle ring exit is provided with nozzle ring exit guide blade, whirlpool
The guide vane of wheel guider is weldingly connected with nozzle ring outer housing.
The diffuser is provided with 13 diffusion channels, and it is axial that diffuser, which changes airflow direction in exit,.
The beneficial effects of the utility model are: a kind of microminiature centripetal turbine jet engine, which employs new
The fuel nozzle of type simplifies the complicated oil circuit design of engine fuel and oil system, and at the same time, improve nozzle can
Replaceability is utmostly cooled down and has been lubricated to bearing, is reduced requirement of the engine to bearing, is effectively raised hair
The service life of motivation greatly reduces the maintenance cost of engine.
Detailed description of the invention
Fig. 1 is the utility model schematic cross-sectional view；
Fig. 2 is the axle sleeve and oil supply system structural schematic diagram of the utility model；
Fig. 3 is the sleeve body structural schematic diagram of the utility model；
Fig. 4 is the rear carbocyclic ring jacket structure schematic diagram of the utility model；
Fig. 5 is the preceding carbocyclic ring jacket structure schematic diagram of the utility model；
Fig. 6 is the front and back carbocyclic ring schematic view of the front view of the utility model；
Fig. 7 is Fig. 6 schematic cross-sectional view of the utility model；
Fig. 8 is the diffuser structure schematic diagram of the utility model；
Fig. 9 is the nozzle ring structural schematic diagram of the utility model；
Figure 10 is the schematic cross-sectional view of Fig. 9 of the utility model；
Figure 11 is the nozzle ring outer shell construction schematic diagram of the utility model.
It is as shown in the figure: 1, diffuser；2, front apron；3, preceding carbocyclic ring housing；4, sleeve；5, sleeve body；6, axis；7, rear carbon
Ring housing；8, fuel nozzle；9, preceding carbocyclic ring；10, preceding spring；11, oil inlet；12, bearing；13, rear baffle；14, turbine is oriented to
Device；15, rear carbocyclic ring；16, rear spring；17, air intake duct；18, middle casing；19, inlet cone；20, centrifugal compressor；21, it burns
Room；22, evaporation tube；23, centripetal turbine；24, jet pipe；25, turbine bushing；26, cavity；31, preceding carbocyclic ring housing positioning pin；
32, preceding carbocyclic ring housing groove；51, oilhole；52, bearing spider；71, rear carbocyclic ring housing positioning pin；72, rear carbocyclic ring housing groove；
91, location hole；92, spring mounting hole；93, sealed groove；141, nozzle ring inner housing；142, nozzle ring import is led
Leaf；143, nozzle ring exit guide blade；144, nozzle ring outer housing.
Specific embodiment
The principles of the present invention and feature are described below in conjunction with attached drawing, example is served only for explaining that this is practical
It is novel, it is not intended to limit the scope of the utility model.
As shown in Fig. 1 to 11, a kind of microminiature centripetal turbine jet engine, its main feature is that including axis 6, axis 6
Front end centrifugal compressor 20 is installed, be provided with diffuser 1 and air intake duct 17 outside centrifugal compressor 20, the rear end peace of axis 6
Equipped with centripetal turbine 23,23 periphery of centripetal turbine is provided with nozzle ring 14, and 14 rear portion of nozzle ring is provided with jet pipe
24, sleeve body 5 is equipped with by bearing 12 on the axis 6,5 front end of sleeve body is connected with diffuser 1, sleeve body 5
Rear end is connected with nozzle ring 14, combuster 21 is arranged between diffuser 1 and nozzle ring 14,21 periphery of combustion chamber is set
It is equipped with middle casing 18, evaporation tube 22 is provided in combustion chamber 21；The bearing 12 is mounted on the bearing branch in sleeve body 5
On seat 52, oilhole 51 is provided on bearing spider 52, oilhole 51 is connected with the cavity that sleeve body 5 and axis 6 are formed, axle sleeve sheet
Fuel nozzle 8 and oil inlet 11 are additionally provided on body 5, fuel nozzle 8 and oil inlet 11 are connected with cavity, and fuel nozzle 8 is stretched
Enter in evaporation tube 22.
6 front end of axis is additionally provided with inlet cone 19, is equipped with turbine bushing 25 on the outside of the centripetal turbine 23,
18 front end of middle casing and air intake duct 17 is fixedly linked with diffuser 1, and 18 rear end of middle casing is connected with jet pipe 24,
Jet pipe 24 and turbine bushing 25 and nozzle ring 14 are connected, and carbocyclic ring 9 before being provided between 5 front end of sleeve body and axis 6 is preceding
Carbocyclic ring 9 is mounted on the sleeve 4 of axis 6 by front apron 2 and preceding carbocyclic ring housing 3, is provided between 5 rear end of sleeve body and axis 6
Carbocyclic ring 15 afterwards, rear carbocyclic ring 15 are mounted on axis 6 by rear baffle 13 and rear carbocyclic ring housing 7, and the axis 6 and centripetal turbine 23 are
Integral structure.
5 front end of sleeve body is fixedly linked by screw with diffuser 1,5 rear end of sleeve body by screw and
Nozzle ring 14 is fixedly linked, spring 10 before being provided between preceding carbocyclic ring 9 and preceding carbocyclic ring housing 3, rear carbocyclic ring 15 and rear carbocyclic ring
Rear spring 16 is provided between housing 7, the front apron 2 is fixed and clamped by 1 inward flange of diffuser, and rear baffle 13 passes through whirlpool
Wheel 14 inward flange of guider is fixed and clamped.
Carbocyclic ring housing groove 32 before corresponding shaft bearing 12 is provided on the preceding carbocyclic ring housing 3, outer race pass through preceding carbon
Ring housing 3 positions, carbocyclic ring housing positioning pin 31 before the location hole on preceding carbocyclic ring housing 3 on corresponding preceding carbocyclic ring 9 is provided with；Carbocyclic ring afterwards
Corresponding shaft bearing 12 is provided with rear carbocyclic ring housing groove 72 on housing 7, and outer race is positioned by rear carbocyclic ring housing 7, outside rear carbocyclic ring
The location hole of carbocyclic ring 15 is provided with rear carbocyclic ring housing positioning pin 71 after corresponding on set 7, and the fuel nozzle 8 is arranged in rear carbocyclic ring
On sleeve body 5 outside housing 7, oilhole 51 is connected by rear carbocyclic ring housing 7 with fuel nozzle 8, and fuel nozzle 8 passes through spiral shell
Pit is connected with sleeve body, and inside cavity oil liquid is sprayed onto engine chamber evaporation tube 22 by fuel nozzle 8.
It is separately provided for that four bullets of preceding spring 10 and rear spring 16 are installed on the preceding carbocyclic ring 9 and rear carbocyclic ring 15
Spring mounting hole, preceding carbocyclic ring 9 and rear carbocyclic ring 15 generate pretightning force by preceding spring 10 and rear spring 16 respectively and realize sealing；Preceding carbocyclic ring
9 and the inner ring surface of rear carbocyclic ring 15 divide equally and be provided with sealed groove 93, fuel oil is formed inside sealed groove 93 turbulent to drop step by step
Pressure realizes sealing；The gap of 0.01~0.04mm is set between preceding carbocyclic ring 9 and 15 internal diameter of rear carbocyclic ring and axis 6, under the action of oil
Oil film can be generated, carbocyclic ring is held up into realization sealing；The range of 15 work temperature of preceding carbocyclic ring 9 and rear carbocyclic ring are as follows: -120 DEG C of < T <
500 DEG C, the range of pressure P: -0.8bar < P < 75bar.
The nozzle ring 14 includes nozzle ring inner housing 141, nozzle ring outer housing 144, and turbine is led
141 entrance of device inner housing is provided with nozzle ring entry guide vane 142,14 exit of nozzle ring is provided with turbine and leads
To device exit guide blade 143, guide vane and the nozzle ring outer housing of nozzle ring are weldingly connected.
The diffuser 1 is provided with 13 diffusion channels, and it is axial that diffuser 1, which changes airflow direction in exit,.
A kind of microminiature turbine engine axle sleeve, in use, bearing 12 is attached first to the bearing of axle sleeve shell 5
Above support 52, it is adjacent to 12 outer ring of bearing at the preceding carbocyclic ring housing groove 32 of preceding carbocyclic ring housing 3, preceding spring 10 and rear spring 16 divide
It is not mounted in preceding carbocyclic ring 9 and the corresponding spring mounting hole 92 of rear carbocyclic ring 15, meanwhile, by determining on preceding carbocyclic ring 9 and rear carbocyclic ring 15
Position hole 91 is mounted on corresponding preceding carbocyclic ring housing positioning pin 31 and rear carbocyclic ring housing positioning pin 71, and front apron 2 connects with preceding carbocyclic ring 9
The positioning of axle sleeve shell 5 is touched and passed through, is adjacent to 12 outer ring of bearing, rear baffle 13 at the rear carbocyclic ring housing groove 72 of rear carbocyclic ring housing 7
It contacts with rear carbocyclic ring 15 and is positioned by axle sleeve shell 5, microminiature turbine engine combustion oil system oil passage passes through oil inlet
11 import all combustion lubricating oil mixed liquors inside sealing axle sleeve, are fully cooled to bearing 12, then fire lubricating oil mixed liquor
The cooling hole on bearing spider that a part passes through 5 inner right side of axle sleeve shell, a part are passed through by bearing internal external czermak space
The groove structure of carbocyclic ring housing 7 is defeated afterwards arrives fuel nozzle 8, and oil liquid is sprayed onto combustion chamber 21 and is burnt.Its outside air by into
Air flue 17 enters centrifugal compressor 20, becomes pressure-air after being compressed by centrifugal compressor 20, and then air-flow flows into diffuser 1,
Enter combustion chamber 21 after air-flow diffusion, 21 oil spout, burning, the combustion gas of high temperature and pressure expand in nozzle ring 14 in combustion chamber
Accelerating, air-flow impulsion centripetal turbine 23 does work after acceleration, and the combustion gas with dump energy continues expansion in jet pipe 24 and accelerates,
Finally with high speed ejection jet pipe 24, thrust is generated.It eliminates lubricant oil way, will fire lubricating oil mixed liquor (lubricating oil ratio
5%) to be all passed directly to sealing axle sleeve by a shorter oil inlet oil circuit, lubricating oil then will be fired by fuel nozzle and mixed
Liquid injects combustion chamber.Combustion lubricating oil mixed liquor, which all passes through sealing axle sleeve, can make microminiature turbine engine axle sleeve internal bearings component
It is utmostly cooled down and is lubricated, so that microminiature turbine engine life and maintenance cost are improved, simplified simultaneously
The oil supply system of microminiature turbine engine.
The above is only the preferred embodiment of the present invention, is not intended to limit the utility model, all practical at this
Within novel spirit and principle, any modification, equivalent replacement, improvement and so on should be included in the guarantor of the utility model
Within the scope of shield.
Claims (7)
1. a kind of microminiature centripetal turbine jet engine, it is characterized in that including axis, the front end of axis is equipped with centrifugal compressor, from
Diffuser and air intake duct are provided with outside heart compressor, the rear end of axis is equipped with centripetal turbine, and centripetal turbine periphery is provided with whirlpool
Guider is taken turns, nozzle ring rear portion is provided with jet pipe, is equipped with sleeve body, sleeve body by bearing on the axis
Front end is connected with diffuser, and sleeve body rear end is connected with nozzle ring, and combustion is provided between diffuser and nozzle ring
Room is burnt, combustion chamber periphery is provided with middle casing, is provided with evaporation tube in combustion chamber；The bearing is mounted in sleeve body
Bearing spider on, be provided with oilhole on bearing spider, oilhole is connected with the cavity that sleeve body and axis are formed, sleeve body
On be additionally provided with fuel nozzle and oil inlet, fuel nozzle and oil inlet are connected with cavity, and fuel nozzle protrudes into evaporation tube.
2. a kind of microminiature centripetal turbine jet engine as described in claim 1, which is characterized in that the axis front end
Be additionally provided with inlet cone, be equipped on the outside of the centripetal turbine turbine bushing, the middle casing front end and air intake duct with
Diffuser is fixedly linked, and middle casing rear end is connected with jet pipe, and jet pipe and turbine bushing and nozzle ring are connected, axle sleeve
Preceding carbocyclic ring is provided between ontology front end and axis, preceding carbocyclic ring is mounted on the sleeve of axis by front apron and preceding carbocyclic ring housing, axis
It is provided with rear carbocyclic ring between set ontology rear end and axis, rear carbocyclic ring is mounted on an axle by rear baffle and rear carbocyclic ring housing, described
Axis and centripetal turbine are structure as a whole.
3. a kind of microminiature centripetal turbine jet engine as claimed in claim 2, which is characterized in that the sleeve body
Front end is fixedly linked by screw and diffuser, and sleeve body rear end is fixedly linked by screw and nozzle ring, preceding carbocyclic ring
It is provided with preceding spring between preceding carbocyclic ring housing, rear spring, the front apron are provided between rear carbocyclic ring and rear carbocyclic ring housing
It is fixed and clamped by diffuser inward flange, rear baffle is fixed and clamped by nozzle ring inward flange.
4. a kind of microminiature centripetal turbine jet engine as claimed in claim 3, which is characterized in that outside the preceding carbocyclic ring
Carbocyclic ring housing groove before corresponding shaft bearing is provided with is put on, outer race is positioned by preceding carbocyclic ring housing, and correspondence is put on outside preceding carbocyclic ring
Carbocyclic ring housing positioning pin before location hole on preceding carbocyclic ring is provided with；Putting on corresponding shaft bearing outside carbocyclic ring afterwards, to be provided with rear carbocyclic ring housing recessed
Slot, outer race are positioned by rear carbocyclic ring housing, and the location hole that carbocyclic ring after corresponding to is put on outside rear carbocyclic ring is provided with rear carbocyclic ring housing
Positioning pin, the fuel nozzle are arranged on the sleeve body outside rear carbocyclic ring housing, and oilhole passes through rear carbocyclic ring housing and combustion
Oil burner nozzle is connected, and fuel nozzle is connected by threaded hole with axle sleeve shell ontology, and inside cavity oil liquid is sprayed onto hair by fuel nozzle
In the evaporation tube of motivation combustion chamber.
5. a kind of microminiature centripetal turbine jet engine as claimed in claim 2, which is characterized in that the preceding carbocyclic ring and
It is separately provided for that four spring mounting holes of preceding spring and rear spring are installed on carbocyclic ring afterwards, preceding carbocyclic ring and rear carbocyclic ring lead to respectively
It crosses preceding spring and rear spring generates pretightning force and realizes sealing；It is recessed that the inner ring surface of preceding carbocyclic ring and rear carbocyclic ring is respectively provided with sealing
Slot, fuel oil form turbulent step pressure reducing inside sealed groove and realize sealing；It is arranged between preceding carbocyclic ring and rear carbocyclic ring internal diameter and axis
The gap of 0.01 ~ 0.04mm can generate oil film for carbocyclic ring under the action of oil and hold up realization sealing；Preceding carbocyclic ring and the work of rear carbocyclic ring
The range of temperature T are as follows: -120 DEG C of 500 DEG C of < T <, the range of pressure P: -0.8bar < P < 75bar.
6. a kind of microminiature centripetal turbine jet engine as described in claim 1, which is characterized in that the turbine guiding
Device includes nozzle ring inner housing, nozzle ring outer housing, and nozzle ring inner housing entrance is provided with turbine guiding
Device entry guide vane, nozzle ring exit are provided with nozzle ring exit guide blade, and guide vane and the turbine of nozzle ring are led
It is weldingly connected to device outer housing.
7. a kind of microminiature centripetal turbine jet engine as described in claim 1, which is characterized in that the diffuser is set
13 diffusion channels are equipped with, it is axial that diffuser, which changes airflow direction in exit,.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821321737.3U CN208918700U (en) | 2018-08-16 | 2018-08-16 | A kind of microminiature centripetal turbine jet engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821321737.3U CN208918700U (en) | 2018-08-16 | 2018-08-16 | A kind of microminiature centripetal turbine jet engine |
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| Publication Number | Publication Date |
|---|---|
| CN208918700U true CN208918700U (en) | 2019-05-31 |
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ID=66701536
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821321737.3U Active CN208918700U (en) | 2018-08-16 | 2018-08-16 | A kind of microminiature centripetal turbine jet engine |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108798897A (en) * | 2018-08-16 | 2018-11-13 | 西北工业大学 | A kind of microminiature centripetal turbine jet engine |
| CN110985215A (en) * | 2019-12-27 | 2020-04-10 | 西北工业大学 | Starting and launching integrated system for micro turbojet engine |
| CN113932249A (en) * | 2020-06-29 | 2022-01-14 | 中国航发商用航空发动机有限责任公司 | Combustion chamber and pre-diffuser |
-
2018
- 2018-08-16 CN CN201821321737.3U patent/CN208918700U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108798897A (en) * | 2018-08-16 | 2018-11-13 | 西北工业大学 | A kind of microminiature centripetal turbine jet engine |
| CN110985215A (en) * | 2019-12-27 | 2020-04-10 | 西北工业大学 | Starting and launching integrated system for micro turbojet engine |
| CN110985215B (en) * | 2019-12-27 | 2024-05-24 | 西安觉天动力科技有限责任公司 | Integrated system for starting of micro turbojet engine |
| CN113932249A (en) * | 2020-06-29 | 2022-01-14 | 中国航发商用航空发动机有限责任公司 | Combustion chamber and pre-diffuser |
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