CN105322416A - High-Mach-number low-temperature spray tube for HF/DF chemical laser - Google Patents
High-Mach-number low-temperature spray tube for HF/DF chemical laser Download PDFInfo
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- CN105322416A CN105322416A CN201410344749.8A CN201410344749A CN105322416A CN 105322416 A CN105322416 A CN 105322416A CN 201410344749 A CN201410344749 A CN 201410344749A CN 105322416 A CN105322416 A CN 105322416A
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Abstract
The invention relates to a high-Mach-number low-temperature spray tube for HF/DF chemical laser, and belongs to the field of HF/DF chemical laser spray tube design. A Russian newest unit segmentation scheme of the HF/DF chemical laser spray tube is employed, ultrasonic and ultrasonic mixed concepts of a traditional high-Mach-number low-temperature spray tube are introduced, and the flow whirlpool technology of RAMP and DEFLECTOR spray tubes is used. The high-Mach-number low-temperature spray tube for HF/DF chemical laser has the advantages that high mach number can be realized in a larger throat channel of the spray tube, processing is simple, influence of thermal deformation on the throat channel in the operation process is greatly reduced, and the service life of the spray tube is prolonged; the penetration length needed by injecting H2 air flow into a main spray tube is greatly reduced, and the mixing efficiency is higher; and the temperature and pressure of an optical cavity are lower, the gain of the optical cavity and the work pressure of a combustion room are greatly improved, and the volume efficiency, energy flow density and specific power of HF/DF chemical laser are improved.
Description
Technical field
The invention belongs to HF/DF chemical laser Nozzle Design field, for the Nozzle Design of HF/DF chemical laser.
Background technology
HF/DF chemical laser is one of current the most successful two large chemical lasers.What the stimulated radiation of HF/DF chemical laser occurred in HF/DF molecule shakes-turns in excitation state, the burning of main flow drives HF/DF chemical laser to adopt combustion method pyrolysis to produce F atom, and the F atom of generation is through supersonic nozzle cooling and react the HF/DF molecule that generates vibration excited state after accelerating with H2/D2 and produce population inversion in rotational energy level.Select suitable coupling output chamber mirror, multiline HF/DF Laser output can be realized.
The critical component of HF/DF chemical laser is supersonic nozzle.In the development course of four more than ten years, along with the development of HF/DF chemical laser spray bar technology, the power of HF/DF chemical laser is improved constantly.Although the light power of HF/DF chemical laser has reached MW level, but its volume efficiency (light power in jet pipe unit volume), energy-flux density (light power of nozzle exit unit are) and specific power (light power of unit weight of material) still have very large room for promotion in theory, the design of novel jet pipe is that implementation efficiency promotes the most directly and the most effective approach.HF/DF chemical laser jet pipe experienced by subsonic speed, supersonic speed and hypersonic development course, early stage employing subsonic effuser, the Typical Representative of supersonic nozzle is 2SLOT, 3SLOT, TRIP, RAMP, DEFLECTOR and three dimensional symmetry jet pipe, the Typical Representative of hypersonic nozzle is HYWN and HYLTE jet pipe, in above-mentioned jet pipe, the amplification strategy of most of jet pipe is as follows: main jet Guan Weidan slit jet pipe, add H2 position and be in the main nozzle exit of single slit outside two edges of dimension (i.e. horn mouth), whole jet pipe forms by a series of single slit main jet pipe unit is arranged in parallel.The more HYLTE jet pipe of current use still adopts such amplification strategy, and for the less demanding jet pipe of Mach number, this amplification strategy is no problem.But for High Mach number jet pipe, there are some problems in this amplification strategy, mainly in order to obtain High Mach number, large discharge area/throat area ratio must be had, and some inherent features of HF/DF chemical laser itself do not allow main nozzle exit length on dimension to do too large, so the venturi height of main jet pipe is very little, greatly about about 0.2mm, cause processing difficulties, costly, the features such as operating cost high and life-span is short.
Muscovite up-to-date jet pipe have employed a kind of new blocking splitting scheme, its basic thought is still based on the concept of single slit jet pipe, just along the converging diverging plane of jet pipe, slicing treatment is done to single slit jet pipe, carry out blocking segmentation, between two section unit, add H2 ejector filler.
This blocking splitting scheme still has larger nozzle throat height under can be implemented in High Mach number, and obtain the penetration length that very little H2 air-flow injects to main jet pipe, mixing efficiency is higher simultaneously.But what the H2 injecting strategy of Russian novel jet pipe still adopted is the oblique feed postition of free jet, this feed postition has high mixing efficiency, but the kinetic energy rejection that main jet pipe is very large can be caused, cause cavity pressure higher, temperature is higher, is unfavorable for the lifting of bright dipping medium gain and combustion chamber operational pressure.
The present invention adopts the blocking splitting scheme of Russian up-to-date jet pipe, adopts the supersonic speed-supersonic speed hybrid plan of the master-secondary jet pipe of High Mach number low temperature jet pipe simultaneously, designs a kind of novel jet pipe.In order to obtain the gentle higher combustion chamber operational pressure in lower chamber, requirement is done to the Mach number of main jet pipe and secondary jet pipe.Meanwhile, mix the lower problem of intrinsic mixing efficiency to solve supersonic speed-supersonic speed, what introduce RAMP jet pipe and DEFLECTOR jet pipe flows to whirlpool technology.
Summary of the invention
The object of the invention is to improve HF/DF chemical laser volume efficiency, energy-flux density and specific power, a kind of High Mach number low temperature jet pipe for HF/DF chemical laser of proposition.
The object of the invention is to be achieved through the following technical solutions.
A kind of High Mach number low temperature jet pipe for HF/DF chemical laser, comprise main jet pipe unit and secondary nozzle unit, main jet pipe unit and secondary nozzle unit are typical two-dimentional slit Rafael nozzle, main jet pipe unit entrance termination combustor exit, main jet pipe unit outlet termination optical cavity, secondary nozzle unit entrance termination H2 air storing cavity, secondary nozzle unit outlet termination optical cavity; Along the expansion segment dimension perpendicular to main jet pipe unit and secondary nozzle unit, main jet pipe unit and the secondary nozzle unit staggered formation jet pipe successively that is parallel to each other is overall.
The ratio of all main jet pipe unit expansion segments and all secondary nozzle unit expansion segment height (i.e. the dimension of expansion segment) is between 0.8-1.2, all main jet pipe units and all secondary nozzle unit are face symmetrical structure, the plane of symmetry is vertical with the dimension of expansion segment, and the plane of symmetry of all main jet pipe units and all secondary nozzle unit is same plane.
Main jet pipe unit exit Mach number is greater than 4, and secondary nozzle unit exit Mach number is greater than 3.
Jet pipe entirety can be integrated processing and fabricating; Also can be first make the main jet pipe unit of series and secondary nozzle unit respectively, then assemble.
Jet pipe is overall introduces Forced water cooling passage in main jet pipe throat road part.
What export with secondary nozzle unit in the outlet of main jet pipe unit all offers along gas flow direction the plural groove be parallel to each other perpendicular in two interior sidewall surface of expansion segment dimension.
Main jet pipe unit and secondary nozzle unit are platy structure, and the thickness perpendicular to expansion segment dimension is 1-15mm.
Along the expansion segment dimension perpendicular to main jet pipe unit and secondary nozzle unit, main jet pipe unit and the secondary nozzle unit staggered formation jet pipe entirety successively that is parallel to each other refers to: main jet pipe unit and secondary nozzle unit be staggered superimposed setting successively, be equipped with a secondary nozzle unit between any two main jet pipe units, between any two secondary nozzle unit, be equipped with a main jet pipe unit; Main jet pipe unit is identical with the expansion segment dimension of secondary nozzle unit, and the expansion segment dimension place plane of each main jet pipe unit and each secondary nozzle unit is parallel to each other.
Beneficial effect:
The present invention contrasts prior art and has following innovative point:
1. have employed the blocking splitting scheme of Russian up-to-date HF/DF chemical laser jet pipe, High Mach number can be realized on larger nozzle throat, processing is simple, considerably reduces thermal deformation in running and, on the impact of nozzle throat, extends the useful life of jet pipe.
2. compare with superelevation Mach number nozzle with traditional High Mach number jet pipe, the present invention highly shortened H2 air-flow to the penetration length needed for the injection of main jet pipe, and mixing efficiency is higher.
3. because main jet pipe and secondary jet pipe all adopt higher Mach number design, compared with traditional jet pipe, optical cavity temperature and pressure is lower, can increase substantially the gain of optical cavity and the operating pressure of combustion chamber, thus improves HF/DF chemical laser volume efficiency, energy-flux density and specific power.
Accompanying drawing explanation
Overall jet pipe schematic diagram (comprising 10 main jet pipe units and 10 secondary nozzle unit) of Fig. 1;
The secondary nozzle component right view of Fig. 2, front view and left view;
The main nozzle component right view of Fig. 3, front view and left view;
In figure: 1 is main jet pipe unit, 2 is secondary nozzle unit, and 3 is main jet pipe unit outlet grooves on two sides, and 4 is secondary nozzle unit outlet grooves on two sides, and 5 is secondary jet pipe rear end face, and 6 is secondary jet pipe front end face, and 7 is main jet pipe rear end face, and 8 is main jet pipe front end face.
Embodiment
Below in conjunction with drawings and Examples, the invention will be further described.
Embodiment
According to design philosophy of the present invention, devise following jet pipe, overall jet pipe, secondary nozzle component and main nozzle component as Figure 1-3:
A kind of High Mach number low temperature jet pipe for HF/DF chemical laser, comprise main jet pipe unit and secondary nozzle unit, main jet pipe unit and secondary nozzle unit are typical two-dimentional slit Rafael nozzle, main jet pipe unit entrance termination combustor exit, main jet pipe unit outlet termination optical cavity, secondary nozzle unit entrance termination H2 air storing cavity, secondary nozzle unit outlet termination optical cavity; Along the expansion segment dimension perpendicular to main jet pipe unit and secondary nozzle unit, main jet pipe unit and the secondary nozzle unit staggered formation jet pipe successively that is parallel to each other is overall.
The ratio of all main jet pipe unit expansion segments and all secondary nozzle unit expansion segment height (i.e. the dimension of expansion segment) is 1:1, all main jet pipe units and all secondary nozzle unit are face symmetrical structure, the plane of symmetry is vertical with the dimension of expansion segment, and the plane of symmetry of all main jet pipe units and all secondary nozzle unit is same plane.
Main jet pipe unit exit Mach number is 5.5, secondary nozzle unit exit Mach number equal 4.5.
Jet pipe entirety first makes the main nozzle component of series and secondary nozzle component respectively, and then assembled, wherein, the rear end face of main nozzle component front end face and secondary nozzle component closely cooperates, and the center-aisle of formation is main jet pipe unit; The rear end face of secondary nozzle component front end face and main nozzle component closely cooperates, and the center-aisle of formation is secondary nozzle unit.
Jet pipe is overall introduces Forced water cooling passage in main jet pipe throat road part.
What export with secondary nozzle unit in the outlet of main jet pipe unit all offers along gas flow direction 13 grooves be parallel to each other perpendicular in two interior sidewall surface of expansion segment dimension.
Main jet pipe unit and secondary nozzle unit are platy structure, and main jet pipe unit is 5mm perpendicular to the thickness of expansion segment dimension, and secondary nozzle unit is 2.5mm perpendicular to the thickness of expansion segment dimension.
Along the expansion segment dimension perpendicular to main jet pipe unit and secondary nozzle unit, main jet pipe unit and the secondary nozzle unit staggered formation jet pipe entirety successively that is parallel to each other refers to: main jet pipe unit and secondary nozzle unit be staggered superimposed setting successively, be equipped with a secondary nozzle unit between any two main jet pipe units, between any two secondary nozzle unit, be equipped with a main jet pipe unit; Main jet pipe unit is identical with the expansion segment dimension of secondary nozzle unit, and the expansion segment dimension place plane of each main jet pipe unit and each secondary nozzle unit is parallel to each other.The invention belongs to HF/DF chemical laser Nozzle Design field, for the Nozzle Design of HF/DF chemical laser.The object of the invention is to improve HF/DF chemical laser volume efficiency, energy-flux density and specific power, a kind of High Mach number low temperature jet pipe for HF/DF chemical laser of proposition.Present invention employs the blocking splitting scheme of Russian up-to-date HF/DF chemical laser jet pipe, what introduce the supersonic speed-supersonic speed hybrid concept of traditional High Mach number low temperature jet pipe and RAMP jet pipe and DEFLECTOR jet pipe flows to whirlpool technology simultaneously.The present invention can realize High Mach number on larger nozzle throat, and processing is simple, considerably reduces thermal deformation in running and, on the impact of nozzle throat, extends the useful life of jet pipe.Compare with superelevation Mach number nozzle with traditional High Mach number jet pipe, the present invention highly shortened H2 air-flow to the penetration length needed for the injection of main jet pipe, and mixing efficiency is higher.Compared with traditional jet pipe, optical cavity temperature and pressure is lower, can increase substantially the gain of optical cavity and the operating pressure of combustion chamber, thus improves HF/DF chemical laser volume efficiency, energy-flux density and specific power.
Claims (8)
1. the High Mach number low temperature jet pipe for HF/DF chemical laser, comprise main jet pipe unit and secondary nozzle unit, it is characterized in that: main jet pipe unit and secondary nozzle unit are two-dimentional slit Rafael nozzle, main jet pipe unit entrance termination combustor exit, main jet pipe unit outlet termination optical cavity, secondary nozzle unit entrance termination H2 air storing cavity, secondary nozzle unit outlet termination optical cavity; Along the expansion segment dimension perpendicular to main jet pipe unit and secondary nozzle unit, main jet pipe unit and the secondary nozzle unit staggered formation jet pipe successively that is parallel to each other is overall.
2. the High Mach number low temperature jet pipe for HF/DF chemical laser according to claim 1, it is characterized in that: the ratio of all main jet pipe unit expansion segments and all secondary nozzle unit expansion segment height (i.e. the dimension of expansion segment) is between 0.8-1.2, all main jet pipe units and all secondary nozzle unit are face symmetrical structure, the plane of symmetry is vertical with the dimension of expansion segment, and the plane of symmetry of all main jet pipe units and all secondary nozzle unit is same plane.
3. the High Mach number low temperature jet pipe for HF/DF chemical laser according to claim 1, is characterized in that: main jet pipe unit exit Mach number is greater than 4, secondary nozzle unit exit Mach number be greater than 3.
4. the High Mach number low temperature jet pipe for HF/DF chemical laser according to claim 1, is characterized in that: jet pipe entirety can be integrated processing and fabricating; Also can be first make the main jet pipe unit of series and secondary nozzle unit respectively, then assemble.
5. the High Mach number low temperature jet pipe for HF/DF chemical laser according to claim 1, is characterized in that: jet pipe is overall introduces Forced water cooling passage in main jet pipe throat road part.
6. the High Mach number low temperature jet pipe for HF/DF chemical laser according to claim 1, is characterized in that: what export with secondary nozzle unit in the outlet of main jet pipe unit all offers along gas flow direction the plural groove be parallel to each other perpendicular in two interior sidewall surface of expansion segment dimension.
7. the High Mach number low temperature jet pipe for HF/DF chemical laser according to claim 1, it is characterized in that: main jet pipe unit and secondary nozzle unit are platy structure, the thickness perpendicular to expansion segment dimension is 1-15mm.
8. the High Mach number low temperature jet pipe for HF/DF chemical laser according to claim 1 or 7, it is characterized in that: along the expansion segment dimension perpendicular to main jet pipe unit and secondary nozzle unit, main jet pipe unit and the secondary nozzle unit staggered formation jet pipe entirety successively that is parallel to each other refers to: main jet pipe unit and secondary nozzle unit be staggered superimposed setting successively, be equipped with a secondary nozzle unit between any two main jet pipe units, between any two secondary nozzle unit, be equipped with a main jet pipe unit; Main jet pipe unit is identical with the expansion segment dimension of secondary nozzle unit, and the expansion segment dimension place plane of each main jet pipe unit and each secondary nozzle unit is parallel to each other.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410344749.8A CN105322416B (en) | 2014-07-18 | 2014-07-18 | A kind of High Mach number low temperature jet pipe for HF/DF chemical lasers |
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| CN201410344749.8A CN105322416B (en) | 2014-07-18 | 2014-07-18 | A kind of High Mach number low temperature jet pipe for HF/DF chemical lasers |
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| CN105322416A true CN105322416A (en) | 2016-02-10 |
| CN105322416B CN105322416B (en) | 2018-05-18 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108336633A (en) * | 2018-01-24 | 2018-07-27 | 中国人民解放军国防科技大学 | Supersonic anode assembly for discharge tube of electro-excitation laser |
Citations (7)
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|---|---|---|---|---|
| DE2851505A1 (en) * | 1978-11-29 | 1980-06-04 | Messerschmitt Boelkow Blohm | METHOD FOR PRODUCING A MULTIPLE NOZZLE ARRANGEMENT |
| US4230996A (en) * | 1978-12-19 | 1980-10-28 | United Technologies Corporation | Nozzle array for chemical lasers |
| US4348764A (en) * | 1979-11-15 | 1982-09-07 | Rockwell International Corporation | Nozzle construction for chemical laser |
| US4375687A (en) * | 1980-12-29 | 1983-03-01 | The United States Of America As Represented By The Secretary Of The Army | Hypersonic wedge nozzle for chemical lasers |
| WO2004029736A2 (en) * | 2002-09-13 | 2004-04-08 | Ksy Corporation | Improved laser nozzle and iodine injection for coil |
| JP2010042445A (en) * | 2008-07-16 | 2010-02-25 | Jfe Steel Corp | Cooling equipment and cooling method of hot steel sheet |
| CN103161775A (en) * | 2011-12-13 | 2013-06-19 | 中国科学院大连化学物理研究所 | One-dimensional expansion large-mach-number nozzle vane and machining and application thereof |
-
2014
- 2014-07-18 CN CN201410344749.8A patent/CN105322416B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2851505A1 (en) * | 1978-11-29 | 1980-06-04 | Messerschmitt Boelkow Blohm | METHOD FOR PRODUCING A MULTIPLE NOZZLE ARRANGEMENT |
| US4230996A (en) * | 1978-12-19 | 1980-10-28 | United Technologies Corporation | Nozzle array for chemical lasers |
| US4348764A (en) * | 1979-11-15 | 1982-09-07 | Rockwell International Corporation | Nozzle construction for chemical laser |
| US4375687A (en) * | 1980-12-29 | 1983-03-01 | The United States Of America As Represented By The Secretary Of The Army | Hypersonic wedge nozzle for chemical lasers |
| WO2004029736A2 (en) * | 2002-09-13 | 2004-04-08 | Ksy Corporation | Improved laser nozzle and iodine injection for coil |
| JP2010042445A (en) * | 2008-07-16 | 2010-02-25 | Jfe Steel Corp | Cooling equipment and cooling method of hot steel sheet |
| CN103161775A (en) * | 2011-12-13 | 2013-06-19 | 中国科学院大连化学物理研究所 | One-dimensional expansion large-mach-number nozzle vane and machining and application thereof |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108336633A (en) * | 2018-01-24 | 2018-07-27 | 中国人民解放军国防科技大学 | Supersonic anode assembly for discharge tube of electro-excitation laser |
| CN108336633B (en) * | 2018-01-24 | 2019-06-25 | 中国人民解放军国防科技大学 | Anode assembly for discharge tube of electro-excitation laser |
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| CN105322416B (en) | 2018-05-18 |
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