CN206031794U - Weapon -bay noise suppression device based on environment gas jet - Google Patents
Weapon -bay noise suppression device based on environment gas jet Download PDFInfo
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- CN206031794U CN206031794U CN201621083993.4U CN201621083993U CN206031794U CN 206031794 U CN206031794 U CN 206031794U CN 201621083993 U CN201621083993 U CN 201621083993U CN 206031794 U CN206031794 U CN 206031794U
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Abstract
The utility model discloses a weapon -bay noise suppression device based on environment gas jet installs at weapon -bay (11) opening part, include that transversal sport export (6) of personally submitting thin long rectangular lies in weapon -bay (11) leading edge along big the staying room (2) and set up sport flap (4) that the sport exported (6) in the young chamber that airflow direction connects. The utility model discloses installing inside the weapon -bay, utilizing the environment gaseous as the air supply, noise intensity through to weapon -bay opening part jet gas current under -deck when reducing the weapon -bay and open neither destroys the pneumatic appearance of aircraft, does not need additionally to provide high pressurized air source again, long service life, reliable and stable.
Description
Technical field
This utility model is related to field of aerospace technology, specifically refers to a kind of weapon-bay based on environmental gas jet flow and makes an uproar
Sound inhibitor.
Background technology
Modern military opportunity of combat typically adopts weapon-bay carrying arms, this is because when opportunity of combat such as is in/drops, cruises at the state
When, the hatch door of weapon-bay is closed, and this weapon carrying mode can be effectively improved the flying quality of opportunity of combat, such as improves
Stealth capabilities, enhancing mobility, reduction flight resistance etc..
When opportunity of combat is launched or throws in weapon, the hatch door of weapon-bay is in open mode, as environmental gas flow velocity is higher,
In weapon-bay, gas flow rate is relatively low, can form transition zone, the transition zone gas in weapon-bay open area between gas different in flow rate
Body is referred to as shear layer.When shear layer strikes weapon-bay bulkhead, easily occur stream Induced Oscillation phenomenon in cabin, produce high intensity gas
Moving noise.High intensity noise environment not only has destruction to weapon cabin system, such as causes control panel failure, bulkhead in cabin
Structural fatigue etc., also add the maintenance cost of opportunity of combat.
Being presently used for aircraft noise suppression device for weapon bay mainly includes two kinds of sides of leading edge spoiler and micro-hole jet
Formula, the former shortcoming is：Spoiler destroys aircraft profile, increased flight resistance, and its scope of application is less,
Under the conditions of supersonic flight, the noise reduction capability of device is remarkably decreased even failure；The shortcoming of the latter is：Micro-hole jet needs volume
Outer high-pressure air source supply, high-pressure air source are not only not readily portable, and jet exit flow is affected by source of the gas, causes noise reduction to fill
The use time put is restricted.
Utility model content
The purpose of this utility model is to provide a kind of noise suppression device for weapon bay based on environmental gas jet flow, is installed
Weapon-bay leading edge Noise Suppression Device by the use of environmental gas as source of the gas, by weapon-bay leading edge transverse injection air-flow with
The noise intensity in cabin when weapon-bay is opened is reduced, flight vehicle aerodynamic profile is neither destroyed, high pressure gas need not be additionally provided again
Source.
The utility model has the advantage of：
1st, simple structure, compact, do not destroy flight vehicle aerodynamic profile；
2nd, environmental gas by Noise Suppression Device of the present invention to jet-stream wind at weapon-bay opening, it is sub-/across/
Under supersonic speed, especially under/supersonic speed, substantially, efficiency is higher for noise reduction；
3rd, jet parameters can be automatically adjusted according to flight speed, the characteristics of with Self-adaptive flight speed；
4th, high-pressure air source need not be additionally provided and is capable of achieving noise reduction when weapon-bay is opened, high-pressure air source device need not be carried
The weight of aircraft can effectively be mitigated.
This utility model is achieved through the following technical solutions：A kind of weapon-bay noise suppressed based on environmental gas jet flow is filled
Put, installed in weapon-bay leading edge, small for mouth and large for cavity in room and the flow jeting port of jet outlets is set including what is connected along airflow direction
Lid, jet outlets of the cross section in elongate rectangular are located at weapon-bay leading edge.
This utility model is arranged in weapon-bay leading edge model platform, and the jet outlets opened up on flow jeting port lid are located at weapon
Cabin leading edge, into small for mouth and large for cavity in room, flow velocity is slack-off, pressure increase, forms pressure uniformly high for a certain amount of environmental gas
Calm the anger body, gases at high pressure are projected from the elongated jet outlets positioned at weapon-bay leading edge, form jet flow；Jet flow is entered on weapon-bay
Trip flow field, can change the shear layer movement locus of weapon-bay open area, so as to weaken shear layer and weapon-bay bulkhead it
Between collision, and then reduce weapon-bay noise intensity.
Further, in order to preferably realize this utility model, described its chamber in room is divided into staying along airflow direction
Chamber inlet, main chamber, outlet in room, are rectangle, contour line of the main chamber on longitudinal section in the cross section of chamber inlet, outlet in room
The inlet profiles line that is sequentially connected for head and the tail, upper contour line, outlet profile line, lower contour, and upper contour line, lower contour are equal
For the line segment that smoothly transits.Optimization design, upper contour line is with lower contour along axisymmetrical.
The upper contour line, lower contour are the line segment that smoothly transits, and corresponding Main chamber structure is wall light and slips over
The structure crossed, it is ensured that environmental gas are smoothly passed in main chamber.The upper contour line, lower contour can be the samples for smoothly transitting
Bar curved section, can be many arcs, or the multi straight for smoothly transitting of the multiple circular arc line segment compositions for smoothly transitting
Section, can also be the multistage line segment that curved section is collectively constituted with straightway.
Analyze and repeatedly full-scale investigation analysis through simulator, upper contour line, lower contour are compared when being SPL
It is compared with the line segment that smoothly transits of other forms, optimal in terms of noise reduction, that is to say, that this utility model preferably go up contour line,
Lower contour is SPL.
Further, in order to preferably realize this utility model, the upper contour line is only made up of multiple curved sections
SPL, and SPL is divided into into MX curved sections, XY curves along five nodes of M, X, Y, Z, N that airflow direction sets gradually
Section, YZ curved sections, four curved sections for smoothly transitting of ZN curved sections, M is located in chamber inlet and N is located at outlet in room；The MX
Curved section, XY curved sections, YZ curved sections, ZN curved sections constitute the section that smoothly transits；The radius of curvature of the MX curved sections is ρMX, XY
The radius of curvature of curved section is ρXY, the radius of curvature of YZ curved sections is ρYZ, the radius of curvature of ZN curved sections is ρZN, it is bent at node M
Rate radius is ρM, at node N, radius of curvature is ρN, radius of curvature is for timing correspondence sag vertical curve and radius of curvature is corresponding convex when being negative
Curve, meets：ρMX＞ 0, ρXY＜ 0, ρYZ＜ 0, ρZN＞ 0.
Further, in order to preferably realize this utility model, the ρMX、ρXY、ρYZ、ρZN、ρM、ρNAlso meet：|ρMX|≤
|ρXY|、ρM=ρN=0.
Further, the rectification dress of adjustment airflow direction, in order to preferably realize this utility model, is set in the main chamber
Put.In correspondence, contour line arranges the main chamber of five nodes of M, X, Y, Z, N, and the position between the XY curved sections and YZ curved sections sets
Put the fairing of adjustment airflow direction.
Further, in order to preferably realize this utility model, the fairing is generally lamellar and arranges multiple
Rectification hole running through, passing through for steady air current.
Further, in order to preferably realize this utility model, the upper contour line is to be collectively constituted with curve by straight line
Multi-section-line, and multi-section-line is divided into into PA curved sections, AB curves along six nodes of P, A, B, C, D, Q that airflow direction sets gradually
The straight sections such as section, BC, CD straightways, five line segments for smoothly transitting of DQ straightways, P is located in chamber inlet and Q is located at outlet in room；
The PA curved sections, AB curved sections constitute the section that smoothly transits；The radius of curvature of the PA curved sections is ρPA, the curvature of AB curved sections
Radius is ρAB, at node P, radius of curvature is ρP, at node B, radius of curvature is ρB, at node Q, radius of curvature is ρQ, radius of curvature
For timing correspondence sag vertical curve and radius of curvature for it is negative when correspondence convex curve, meet：ρPA＞ 0, ρAB＜ 0, | ρPA|≤|ρAB|、ρP=
ρB=ρQ=0.
Further, in order to preferably realize this utility model, the height in chamber inlet is H1, outlet height in room is
H2, section span that smoothly transits is L and the height of section peak that smoothly transits is H3, meet：H2≤H1、2H1≤H3≤5H1、6.5H1
≤L≤7.5H1。
Further, in order to preferably realize this utility model, also including the air inlet pipe and company for being arranged on end in chamber inlet
Connect the mozzle of outlet in room and jet flow lid；The air inlet pipe its inlet end is lip, and the width of lip is constant, the height of lip
Spend along airflow direction from large to small and lip end with stay chamber inlet it is consistent.
Further, in order to preferably realize this utility model, the port of export of the mozzle is provided with screw support, and
Mozzle is fixedly connected with jet flow lid by the bolt connection piece at screw support.
In this utility model, air inlet pipe, be sequentially connected in room, mozzle, jet flow lid, the interface structure matching of docking and
Sealing is installed.
This utility model compared with prior art, with advantages below and beneficial effect：
(1) it is small for mouth and large for cavity in room by arranging in this utility model so that a certain amount of environmental gas by when in room,
Flow velocity is slack-off, pressure increase, forms the uniform gases at high pressure of pressure, and gases at high pressure are by mozzle from positioned at weapon-bay opening
Elongated jet outlets are projected, and are formed jet flow and are reduced the noise intensity of weapon-bay, do not destroy winged installed in weapon-bay leading edge
The aerodynamic configuration of row device；
(2) this utility model need not provide extra high-pressure air source, be capable of achieving to open weapon-bay merely with environmental gas
When noise abatement；
(3) this utility model simple structure, compact, reliability are high；
(4) this utility model inlet flow conditions are applied widely, it is sub-/transonic speed under inlet flow conditions, be respectively provided with preferable force
Device cabin noise suppression effect；
(5) this utility model has the characteristics of being adaptive to flight speed, can adjust with the difference of speed of incoming flow, self adaptation
Section jet outlets flow.
Description of the drawings
Fig. 1 is structural representation of the present utility model；
Fig. 2 is the longitudinal section sectional view in A-A faces in Fig. 1；
Fig. 3 is installment state schematic diagram of the present utility model；
Fig. 4 is longitudinal section sectional view when above contour line and lower contour are asymmetric in embodiment 3 in room；
When Fig. 5 is asymmetric before and after upper contour line in embodiment 3 in room longitudinal section sectional view；
When Fig. 6 is embodiment 4, upper contour line is SPL in embodiment 5 in room longitudinal section sectional view；
Fig. 7 is the longitudinal section sectional view in embodiment 6 during main indoor location fairing in room；
Fig. 8 is the structural representation of fairing in embodiment 6；
Fig. 9 is longitudinal section sectional view when upper contour line is multi-section-line in embodiment 7 in room；
Figure 10 is longitudinal section sectional view when upper contour line is many broken lines in embodiment 8 in room；
Wherein：1- air inlet pipe, in room, 3- mozzles, 4- jet flow lids, 5- lips, 6- jet outlets, 7- enter 2- in room
Mouthful, 8- outlets in room, 9- screw supports, 10- model platforms, 11- weapon-bays, 12- main chambers, 13- fairings.
Specific embodiment
This utility model is described in further detail with reference to embodiment, but embodiment of the present utility model is not
It is limited to this.
Embodiment 1：
A kind of noise suppression device for weapon bay based on environmental gas jet flow of the present embodiment, as shown in figure 1, including in room
2 and be arranged on the jet flow lid 4 in 2 outlet side of room, open up in jet flow lid 4 jet outlets 6 of the cross section in elongate rectangular and
Position correspondence 11 leading edge of weapon-bay of jet outlets 6.The structure small for mouth and large for cavity in room 2 refer to, inlet end in room 2, goes out
The cross section of gas end opening is respectively less than in the cross section of 2 its inner chamber of room.It is described small for mouth and large for cavity in room 2, along airflow direction, environment gas
Body enters to enter behind room 2 into expansion shape.
Operation principle：
As shown in figure 3, this utility model is arranged in 11 leading edge model platform 10 of weapon-bay, open up in jet flow lid 4
Jet outlets 6 are located at 11 leading edge of weapon-bay, and, into small for mouth and large for cavity in room 2, flow velocity is slack-off, pressure increases for a certain amount of environmental gas
Greatly, the uniform gases at high pressure of pressure are formed, gases at high pressure are projected from the elongated jet outlets 6 positioned at the opening of weapon-bay 11, shape
Into jet flow；Jet flow enters 11 upstream flow field of weapon-bay, can change the shear layer movement locus of 11 open area of weapon-bay, so as to
Weaken the collision between shear layer and the bulkhead of weapon-bay 11, and then reduce the noise intensity of weapon-bay 11.
Embodiment 2：
A kind of noise suppression device for weapon bay based on environmental gas jet flow, it is small for mouth and large for cavity including what is connected along airflow direction
In room 2 and the jet flow lid 4 of jet outlets 6 is set, before jet outlets 6 of the cross section in elongate rectangular are located at weapon-bay 11
Edge.It is described to be divided in chamber inlet 7, main chamber 12, outlet in room 8 along airflow direction in its chamber of room 2, in chamber inlet 7, in room
The cross section of outlet 8 is rectangle.
It is described in chamber inlet 7, outlet in room 8 opens up position can be with contour, it is also possible to be just staggeredly arranged, normal conditions
Under, it is slightly larger than outlet in room 8 and contour with outlet in room 8 or slightly higher in chamber inlet 7 in chamber inlet 7.
Described is small for mouth and large for cavity in room 2, i.e., each cross section of main chamber 12 is not less than in chamber inlet 7 or outlet in room
8 cross-sectional area.The cross section of the main chamber 12 can be series of rectangular, can be a series of ellipses, or one
The indefinite abnormal shape of series of shapes.
When main chamber 12 is series of rectangular, can be series of identical rectangle, can be a series of wide not contour
Rectangle, or a series of shapes are similar, the unequal rectangle of cross-sectional area.
When main chamber 12 for it is a series of oval when, can be series of identical oval or class it is oval, or
A series of shapes are similar, the unequal oval or class of cross-sectional area is oval.
Small for mouth and large for cavity and intracavity smoothly transit setting structure it is more, environmental gas are slipped over into small for mouth and large for cavity and intracavity light
The principle for forming gases at high pressure behind the main chamber 12 crossed is identical, therefore repeats no more.
From hydromechanical angle analysis, main chamber 12 more has without the structure that obvious convex portion, the transition of inwall whole smooth connect
Stablizing beneficial to air-flow；With reference to rectangle in chamber inlet 7, outlet in room 8, in 2 cross section of room in a series of wide not contour
During rectangle, environmental gas switch to gases at high pressure carry out spray noise reduction effect it is more apparent.
The cross section in chamber inlet 7, outlet in room 8, jet outlets 6 is rectangle, is formed after being easy to gas injection
The gas curtain in one whole face.The jet outlets 6 are arranged to elongated rectangular opening, relative to the multiple spurt holes being arranged side by side, air-flow
Overall coherence and to form gas curtain, jet more stable.
The other parts of the present embodiment are same as the previously described embodiments, therefore repeat no more.
Embodiment 3：
The present embodiment does on the basis of embodiment 1, embodiment 2 and further optimizes, further, this Noise Suppression Device
It is in the normal state under installment state, is longitudinal section vertically and by the longitudinal cross-section of axis, the main chamber 12 is cut vertical
The profile in face is made up of import separator bar end to end successively, upper contour line, outlet cut-off rule, lower contour.
As shown in Figure 4, Figure 5, main chamber 12 in the contour line of longitudinal section by end to end import separator bar L1, upper contour line
L2, outlet cut-off rule L3, lower contour L4Composition, upper contour line L2Positioned in chamber inlet 7 end points be M, positioned at outlet in room 8
End points be N, upper contour line L2It is a middle part away from the SPL in chamber inlet 7 or outlet in room 8.The main chamber 12 is leaned on
Into the expanding nozzle shape for smoothly transitting, a certain amount of environmental gas can be because transversal after entering main chamber 12 for nearly one end for staying chamber inlet 7
Area increases and flow velocity is reduced, pressure increases, and sprays from jet outlets 6, realize noise reduction after forming gases at high pressure.
As shown in figure 4, upper contour line L2It is symmetrical in front and back, and upper contour line L2With lower contour L4It is asymmetric, upper contour line L2
For SPL, and lower contour L4For a straightway.When main chamber 12 is structure in Fig. 4, the surrounding air at the middle and upper levels of main chamber 12
Flow is lower than the flow of lower floor surrounding air, pressure is big.
As shown in figure 5, upper contour line L2It is asymmetric in front and back, and upper contour line L2With lower contour L4Symmetrically.Main chamber 12 is figure
In 5 during structure, the pressure into the environmental gas of main chamber 12 changes with the change of its cross-section variation rate of main chamber 12.
The upper contour line or lower contour can connect the SPL for being formed for only being smoothly transitted by multiple curved sections,
The many broken lines for being formed can be connected for only being smoothly transitted by multiple straightways；Can also be to be smoothly transitted by straight line, curve jointly
The multi-section-line that connection is formed.
The upper contour line, lower contour can be with differences, but in view of the stability of air-flow, concordance of airflow direction etc.
Factor, preferably goes up the structure of contour line, lower contour along axisymmetrical.
The other parts of the present embodiment are identical with embodiment 1 or 2, therefore repeat no more.
Embodiment 4：
The present embodiment does on the basis of embodiment 3 and further optimizes, as shown in fig. 6, the upper profile and bottom profiled edge
Axisymmetrical, the upper contour line are the SPL being only made up of multiple curved sections, and set gradually along airflow direction M,
SPL is divided into MX curved sections, XY curved sections, YZ curved sections, ZN curved sections four and is smoothly transitted by five nodes of X, Y, Z, N
Curved section, M is located at and is located at outlet in room 8 in chamber inlet 7 and N；The MX curved sections, XY curved sections, YZ curved sections, ZN curves
Section constitutes the section that smoothly transits；The radius of curvature of the MX curved sections is ρMX, the radius of curvature of XY curved sections is ρXY, YZ curved sections
Radius of curvature be ρYZ, the radius of curvature of ZN curved sections is ρZN, at node M, radius of curvature is ρM, at node N, radius of curvature is
ρN, radius of curvature is for timing correspondence sag vertical curve and radius of curvature is correspondence convex curve when bearing, and meets ρMX＞ 0, ρXY＜ 0, ρYZ＜ 0,
ρZN＞ 0.
In the present embodiment, above contour line is used as reference standard, the upper profile formed by SPL or multiple circular arc line segments
Line, its radius of curvature it is positive and negative, correspond to its concavity and convexity.In this utility model, definition：For upper contour line, the center of curvature is located at
Curved section inside main chamber 12 is convex curve, and correspondence radius of curvature is negative；The center of curvature is located at the curved section outside main chamber 12
Sag vertical curve, correspondence radius of curvature is for just.The concavity and convexity of the lower contour is just contrary with upper contour line.
The other parts of the present embodiment are same as the previously described embodiments, therefore repeat no more.
Embodiment 5：
The present embodiment does on the basis of embodiment 3 and further optimizes, as shown in fig. 6, the upper profile and bottom profiled edge
Axisymmetrical, the upper contour line are the SPL being only made up of multiple curved sections, and set gradually along airflow direction M,
SPL is divided into MX curved sections, XY curved sections, YZ curved sections, ZN curved sections four and is smoothly transitted by five nodes of X, Y, Z, N
Curved section, M is located at and is located at outlet in room 8 in chamber inlet 7 and N；The MX curved sections, XY curved sections, YZ curved sections, ZN curves
Section constitutes the section that smoothly transits；The radius of curvature of the MX curved sections is ρMX, the radius of curvature of XY curved sections is ρXY, YZ curved sections
Radius of curvature be ρYZ, the radius of curvature of ZN curved sections is ρZN, at node M, radius of curvature is ρM, at node N, radius of curvature is
ρN, radius of curvature is for timing correspondence sag vertical curve and radius of curvature is correspondence convex curve when bearing, and meets ρMX＞ 0, ρXY＜ 0, ρYZ＜ 0,
ρZN＞ 0.
As shown in fig. 6, the ρMX、ρXY、ρYZ、ρZN、ρM、ρNAlso meet：|ρMX|≤|ρXY|、ρM=ρN=0.Work as ρM=ρN=
0、|ρMX|≤|ρXY| when, environmental gas are more relaxed into main chamber 12, steady air current.
This utility model is preferably gone up contour line, lower contour and is 12 structure of main chamber corresponding to line transect.Certainly, upper wheel
Profile, lower contour can also be made up of the circular arc line segment of multiple tangent connections, as a kind of special construction, when MX curves
Section, XY curved sections, YZ curved sections, ZN curved sections are circular arc line segment, and before the section that smoothly transits that thus four curved sections are constituted
It is symmetrical afterwards, i.e. ρMX=ρZN、ρXY=ρYZWhen, environmental gas in main chamber 12 by when change relatively stable.
The other parts of the present embodiment are same as the previously described embodiments, therefore repeat no more.
Embodiment 6：
The present embodiment does on the basis of embodiment 4 or 5 and further optimizes, as shown in fig. 7, the XY curved sections are bent with YZ
The fairing 13 of adjustment airflow direction is set between line segment.As shown in figure 8, the fairing 13 is generally lamellar and sets
Put multiple rectification holes running through, passing through for steady air current.
The setting of the fairing 13 can be adjusted into the ambient windstream direction of main chamber 12, reduce the turbulent flow of air-flow
Degree.
The other parts of the present embodiment are same as the previously described embodiments, therefore repeat no more.
Embodiment 7：
The present embodiment does on the basis of embodiment 3 and further optimizes, as shown in figure 9, the upper profile and bottom profiled edge
Axisymmetrical, the upper contour line are the multi-section-line collectively constituted by straight line and curve, and set gradually along airflow direction P,
Multi-section-line is divided into the straight sections such as PA curved sections, AB curved sections, BC, CD straightways, DQ straightways five by six nodes of A, B, C, D, Q
The line segment for smoothly transitting, P is located in chamber inlet 7 and Q is located at outlet in room 8；The PA curved sections, AB curved sections constitute light and slip over
Cross section；The radius of curvature of the PA curved sections is ρPA, the radius of curvature of AB curved sections is ρAB, at node P, radius of curvature is ρP, section
At point B, radius of curvature is ρB, at node Q, radius of curvature is ρQ, radius of curvature be timing correspondence sag vertical curve and radius of curvature for it is negative when
Correspondence convex curve, meets：ρPA＞ 0, ρAB＜ 0, | ρPA|≤|ρAB|、ρP=ρB=ρQ=0.
The other parts of the present embodiment are same as the previously described embodiments, therefore repeat no more.
Embodiment 8：
The present embodiment does on the basis of embodiment 3 and further optimizes, as shown in Figure 10, the upper profile and bottom profiled edge
Axisymmetrical, the upper contour line are many broken lines that only multiple straightways for smoothly transitting are constituted, and along airflow direction successively
It is straight that many broken lines are divided into RH straightways, HI straightways, IJ straightways, JK straightways, KS by six nodes of R, H, I, J, K, S of setting
Five straightways for smoothly transitting of line segment, IJ straightways are relative to RH straightways or KS straightways away from chamber inlet 7 or in room
8, R of outlet is located in chamber inlet 7 and S is located at outlet in room 8.The IJ straightways are the grade straight section with diameter parallel.The RH
Straightway, KS straightways are contour relative to axis, i.e., equal with the opening of outlet in room 8 in chamber inlet 7.
The other parts of the present embodiment are same as the previously described embodiments, therefore repeat no more.
Embodiment 9：
The present embodiment does on the basis of embodiment 3 and further optimizes, it is described in 7 height of chamber inlet be H1, outlet in room 8
Highly it is H2, section span that smoothly transits is L and the height of section peak that smoothly transits is H3, meet：H2≤H1、2H1≤H3≤
5H1、6.5H1≤L≤7.5H1。
Noise Suppression Device described in the utility model is arranged on upstream position at 11 opening of weapon-bay, opens in jet flow lid 4
If jet outlets 6 be located at 11 leading edge of weapon-bay, through a large amount of test of many times：When aircraft with it is sub-/transonic speed carry out flight when,
Asia/transonic environmental gas, are sprayed from jet outlets 6 after forming gases at high pressure, you can have into small for mouth and large for cavity in room 2
Preferably noise reduction, is not limited to the concrete structure in 2 inner chamber of room；When aircraft carries out flight with supersonic speed, supersonic speed
Environmental gas enter small for mouth and large for cavity in room 2, its noise reduction is affected larger by 12 internal structure of main chamber, works as H1、H2、H3It is full
Sufficient H2≤H1、2H1≤H3≤5H1、6.5H1≤L≤7.5H1When, drop when opening weapon-bay 11 under aircraft supersonic flight state
Effect of making an uproar is preferable.Further, work as H1、H2、H1Meet H2＜ H1、H3=3.5H1, L=7H1When, aircraft supersonic flight state
During lower unlatching weapon-bay 11, noise reduction is best.
Embodiment 10：
The present embodiment does on the basis of any one of embodiment 1-9 and further optimizes, and as shown in Figure 2 and Figure 3, one kind is based on
The noise suppression device for weapon bay of environmental gas jet flow, including the air inlet pipe 1 connected along airflow direction, it is small for mouth and large for cavity in room 2,
The jet flow lid 4 of mozzle 3 and setting jet outlets 6, before jet outlets 6 of the cross section in elongate rectangular are located at weapon-bay 11
Edge.As shown in Fig. 2 the air inlet pipe 1 is arranged on the inlet end in room 2, and its own inlet end also sets up the little lip of the big tail of mouth
Mouthfuls 5,5 tail end of lip is consistent with chamber inlet 7 is stayed and smoothly transits, and opening its cross-sectional area of lip 5 is more than the tail of lip 5
End, longitudinal section is easy to collect more environmental gas in trumpet-shaped lip 5 and enters to enter room 2.
The other parts of the present embodiment are same as the previously described embodiments, therefore repeat no more.
Embodiment 11：
The present embodiment does on the basis of embodiment 1-10 and further optimizes, as shown in Fig. 2 the outlet of the mozzle 3
End is provided with screw support 9, and fixes mozzle 3 with jet flow lid 4 by the bolt connection piece at screw support 9
Connection.
In order to ensure air-tightness of the present utility model, junction can closely be connected by increasing sealing ring, seamless welding etc.
Mode ensures its air-tightness.The mozzle 3 is fixed with jet flow lid 4 by the bolt connection piece at screw support 9
Install.The inlet end of the mozzle 3 is matched with outlet in room 8, the spray on the outlet side of the mozzle 3 and jet flow lid 4
Flow export 6 is matched.
The other parts of the present embodiment are same as the previously described embodiments, therefore repeat no more.
Embodiment 12：
The present embodiment does on the basis of embodiment 1-11 and further optimizes, as shown in Figure 2 and Figure 3, a kind of to be based on environment gas
The noise suppression device for weapon bay of body jet flow, including the air inlet pipe 1 being tightly connected along airflow direction, it is small for mouth and large for cavity in room 2, lead
The jet flow lid 4 of flow tube 3 and setting jet outlets 6, jet outlets 6 of the cross section in elongate rectangular are located at 11 leading edge of weapon-bay.
The jet flow lid 4 is fixed on the leading edge of 10 side wall of model platform, jet outlets 6 and weapon-bay 11 at a distance of 1-3mm.
When the leading edge of 11 operating operation test of a large amount of simulation experiments and actual weapon-bay, jet outlets 6 and weapon-bay 11 is at a distance of 2mm, drop
Effect of making an uproar is the most obvious.
Described is equal rectangle in 7 cross section of chamber inlet, 8 cross section of outlet in room, and length-width ratio is 70:2-4.Through big
Amount 11 operating operation test of simulation experiment and actual weapon-bay, is 70 in chamber inlet 7 or 8 size of outlet in room:When 3, environmental gas enter
When entering main chamber 12 and being changed into gases at high pressure and leave main chamber 12, the most steadily.According at existing aircraft its 11 opening of weapon-bay
Size, carry out match selection, design is long 70mm, width 3mm in chamber inlet 7 or 8 size of outlet in room, now this utility model
Overall noise reduction is optimal.
As shown in Fig. 2 the little lip 5 of its big tail of inlet end setting mouth of the air inlet pipe 1, the profile of 5 its longitudinal section of lip
Including curve ab, and curve ab is an oval part, and its major axis of ellipse herein is 8 with the ratio of short axle:1, now ring
What border air can be smoothed enters to enter room 2 by air inlet pipe 1, effectively expands the intake of surrounding air.
The other parts of the present embodiment are same as the previously described embodiments, therefore repeat no more.
The above, is only preferred embodiment of the present utility model, not does any pro forma limit to this utility model
System, every any simple modification made to above example according to technical spirit of the present utility model, equivalent variations, each falls within
Within protection domain of the present utility model.
Claims (10)
1. a kind of noise suppression device for weapon bay based on environmental gas jet flow, installed in upstream position at weapon-bay (11) opening
Put, it is characterised in that include along the small for mouth and large for cavity in room (2) and the flow jeting port of setting jet outlets (6) of airflow direction connection
Lid (4), jet outlets (6) of the cross section in elongate rectangular are located at weapon-bay (11) leading edge.
2. a kind of noise suppression device for weapon bay based on environmental gas jet flow according to claim 1, it is characterised in that
It is described to be divided in chamber inlet (7), main chamber (12), outlet in room (8), in chamber inlet along airflow direction in room (2) its chamber
(7), the cross section of outlet in room (8) is rectangle, and the contour line of main chamber (12) on longitudinal section is entering of being sequentially connected of head and the tail
Mouth contour line, upper contour line, outlet profile line, lower contour, and upper contour line, lower contour are the line segment that smoothly transits.
3. a kind of noise suppression device for weapon bay based on environmental gas jet flow according to claim 2, it is characterised in that
The upper contour line is the SPL being only made up of multiple curved sections, and M, X, Y, Z, the N five set gradually along airflow direction
SPL is divided into MX curved sections, XY curved sections, YZ curved sections, four curved sections for smoothly transitting of ZN curved sections, M by individual node
Outlet in room (8) is located at positioned in chamber inlet (7) and N；The MX curved sections, XY curved sections, YZ curved sections, ZN curved sections are constituted
Smoothly transit section；The radius of curvature of the MX curved sections is ρMX, the radius of curvature of XY curved sections is ρXY, the curvature of YZ curved sections
Radius is ρYZ, the radius of curvature of ZN curved sections is ρZN, at node M, radius of curvature is ρM, at node N, radius of curvature is ρN, curvature
Radius is for timing correspondence sag vertical curve and radius of curvature is correspondence convex curve, satisfaction when bearing：ρMX＞ 0, ρXY＜ 0, ρYZ＜ 0, ρZN＞ 0.
4. a kind of noise suppression device for weapon bay based on environmental gas jet flow according to claim 3, it is characterised in that
The ρMX、ρXY、ρYZ、ρZN、ρM、ρNAlso meet：|ρMX|≤|ρXY|、ρM=ρN=0.
5. a kind of noise suppression device for weapon bay based on environmental gas jet flow according to claim 3, it is characterised in that
The fairing (13) of adjustment airflow direction is set in the main chamber.
6. a kind of noise suppression device for weapon bay based on environmental gas jet flow according to claim 5, it is characterised in that
Fairing (13) are generally lamellar and arrange multiple rectification holes running through, passing through for steady air current.
7. a kind of noise suppression device for weapon bay based on environmental gas jet flow according to claim 2, it is characterised in that
The upper contour line is the multi-section-line collectively constituted by straight line and curve, and P, A, B, C, D, the Q set gradually along airflow direction
Multi-section-line is divided into the straight sections such as PA curved sections, AB curved sections, BC, CD straightways, DQ straightways five and is smoothly transitted by six nodes
Line segment, P is located at and is located at outlet in room (8) in chamber inlet (7) and Q；The PA curved sections, AB curved sections are constituted and are smoothly transitted
Section；The radius of curvature of the PA curved sections is ρPA, the radius of curvature of AB curved sections is ρAB, at node P, radius of curvature is ρP, node
At B, radius of curvature is ρB, at node Q, radius of curvature is ρQ, radius of curvature be timing correspondence sag vertical curve and radius of curvature for it is negative when pair
Convex curve is answered, is met：ρPA＞ 0, ρAB＜ 0, | ρPA|≤|ρAB|、ρP=ρB=ρQ=0.
8. a kind of noise suppression device for weapon bay based on environmental gas jet flow according to any one of claim 3-7, its
Be characterised by, it is described in chamber inlet (7) highly be H1, outlet in room (8) is highly H2, section span that smoothly transits is that L and light are slipped over
The height for crossing section peak is H3, meet：H2≤H1、2H1≤H3≤5H1、6.5H1≤L≤7.5H1。
9. a kind of noise suppression device for weapon bay based on environmental gas jet flow according to any one of claim 2-7, its
It is characterised by, also including being arranged on the air inlet pipe (1) held in chamber inlet (7) and connection outlet in room (8) and jet flow lid (4)
Mozzle (3)；Air inlet pipe (1) its inlet end is lip (5), and the width of lip (5) is constant, and the height of lip (5) is along gas
Stream direction is from large to small and the end of lip (5) is consistent with chamber inlet (7).
10. a kind of noise suppression device for weapon bay based on environmental gas jet flow according to claim 9, its feature exist
In, the port of export of mozzle (3) is provided with screw support (9), and by the bolt connection installed in screw support (9) place
Mozzle (3) is fixedly connected by part with jet flow lid (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621083993.4U CN206031794U (en) | 2016-09-27 | 2016-09-27 | Weapon -bay noise suppression device based on environment gas jet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621083993.4U CN206031794U (en) | 2016-09-27 | 2016-09-27 | Weapon -bay noise suppression device based on environment gas jet |
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| Publication Number | Publication Date |
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| CN206031794U true CN206031794U (en) | 2017-03-22 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621083993.4U Withdrawn - After Issue CN206031794U (en) | 2016-09-27 | 2016-09-27 | Weapon -bay noise suppression device based on environment gas jet |
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| CN (1) | CN206031794U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106335642A (en) * | 2016-09-27 | 2017-01-18 | 中国空气动力研究与发展中心高速空气动力研究所 | Weapon bay noise suppression device based on environment gas jet |
| CN111470028A (en) * | 2020-04-30 | 2020-07-31 | 中国飞机强度研究所 | Self-suction air entraining method for noise reduction of cavity structure |
| CN117846807A (en) * | 2024-03-07 | 2024-04-09 | 中国空气动力研究与发展中心高速空气动力研究所 | Combined supersonic jet noise reduction spray pipe |
-
2016
- 2016-09-27 CN CN201621083993.4U patent/CN206031794U/en not_active Withdrawn - After Issue
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106335642A (en) * | 2016-09-27 | 2017-01-18 | 中国空气动力研究与发展中心高速空气动力研究所 | Weapon bay noise suppression device based on environment gas jet |
| CN106335642B (en) * | 2016-09-27 | 2018-10-19 | 中国空气动力研究与发展中心高速空气动力研究所 | A kind of noise suppression device for weapon bay based on environmental gas jet flow |
| CN111470028A (en) * | 2020-04-30 | 2020-07-31 | 中国飞机强度研究所 | Self-suction air entraining method for noise reduction of cavity structure |
| CN117846807A (en) * | 2024-03-07 | 2024-04-09 | 中国空气动力研究与发展中心高速空气动力研究所 | Combined supersonic jet noise reduction spray pipe |
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