CN106628192A - Icing detector outline with small radar cross section (RCS) - Google Patents
Icing detector outline with small radar cross section (RCS) Download PDFInfo
- Publication number
- CN106628192A CN106628192A CN201611097529.5A CN201611097529A CN106628192A CN 106628192 A CN106628192 A CN 106628192A CN 201611097529 A CN201611097529 A CN 201611097529A CN 106628192 A CN106628192 A CN 106628192A
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- China
- Prior art keywords
- side edge
- upper side
- lower side
- rounding
- frustum structure
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B64—AIRCRAFT; AVIATION; COSMONAUTICS
- B64D—EQUIPMENT FOR FITTING IN OR TO AIRCRAFT; FLIGHT SUITS; PARACHUTES; ARRANGEMENTS OR MOUNTING OF POWER PLANTS OR PROPULSION TRANSMISSIONS IN AIRCRAFT
- B64D15/00—De-icing or preventing icing on exterior surfaces of aircraft
- B64D15/20—Means for detecting icing or initiating de-icing
Abstract
The invention provides an icing detector outline with a small radar cross section (RCS). The icing detector outline is characterized in that the outline comprises a bottom platform and a protruding column; the bottom platform is of a frustum structure, the upper surface and the lower surface of the frustum structure are both planes and are in a rhombus shape, and the protruding column is arranged at the small plane of the bottom platform; the upper surface of the frustum structure is defined by a first upper side edge, a second upper side edge, a third upper side edge and a fourth upper side edge; the intersection of the first upper side edge and the second upper side edge serves as the upper left endpoint, and the intersection of the third upper side edge and the fourth upper side edge serves as the upper right endpoint; and the included angle gamma between the first upper side edge and the second upper side edge and the included angle gamma between the third upper side edge and the fourth upper side edge are the same, wherein gamma is larger than or equal to 30 degrees but smaller than or equal to 45 degrees.
Description
Technical field
The invention belongs to anti-deicing technical field, is related to a kind of icing detector of low RCS (Radar Cross Section) value
Configuration design.
Background technology
Icing detector under the conditions of icing meteorology, during flight, whether there is for hunter surface and freeze as aircraft
Special detection and alarm equipment.Old-fashioned ice detection is all, using same configuration design, to stretch out a 53.3mm
Long rhombus boss is to outside aircraft.Such profile meets the requirement of icing detection, but with increasing aircraft start it is right
Stealthy to claim, traditional icing detector profile does not just reach aircraft and requires for the RCS values for exposing thing.
RCS values：Radar Cross Section, i.e. Radar Cross Section, evaluate and weigh a frame invisbile plane
Most important parameter, he is a kind of conversion area of target, strong for the produced echo under radar wave irradiation of metric objective
Degree size.
Aircraft will consider the Stealth Fighter test problem of all parts after overall Stealth shape design is completed.Freeze
Detector due to its exposed parts and aircraft at an angle of 90, and edge rounding so that its RCS is exceeded, is unsatisfactory for aircraft to portion
The stealthy requirement of part.
To meet stealthy requirement of the aircraft to icing detector, need to be optimized icing detector profile, be that this is right
Icing detector has carried out substantial amounts of Stealth Fighter test.Outside icing detector is independently of airframe, icing detector
In bury structure and will produce very strong back scattering, its edge will also produce traveling wave scattering and edge diffraction.Its scattering is strong and weak
The Stealth Fighter of airplane complete machine will be had influence on, RCS test assessments carefully must be carried out to part.Carried by using a set of low scattering
Body, to eliminate the scattering that structure and edge are buried in which interference.
The Electromagnetic Simulation of Stealth shape target is calculated, generally using classical numerical method --- moment method (MOM), should
Method high precision, but for the calculating of Electrically large size object, the method computational efficiency is too low, in order to solve computational accuracy and efficiency
Contradictory problems, this project adopt a kind of improved moment method --- the algorithm of feature based basic function (CBFM).To existing knot
Ice sounder carries out RCS with the built-up pattern of carrier and calculates analysis.
Table 1 improves front icing detector and carrier combinations model RCS average statistical tables
Average statistical from table 1 can be seen that improve before icing detector RCS it is higher, especially 1.9GHz with
12GHz。
To meet stealthy requirement of the type aircraft to icing detector, devise outside a kind of icing detector of low RCS values
Shape.
The content of the invention
The purpose of the present invention is：A kind of icing detector configuration design of low RCS values is provided, and aircraft of new generation is met to hidden
The requirement of body performance.
The technical scheme is that：A kind of icing detector profile of low RCS, it is characterised in that including bottom platform
And projection,
The bottom platform adopts the upper and lower surface of frustum structure, frustum structure to be plane, and is rhombus, convex
Post is arranged in the less plane of bottom platform；
The upper surface of frustum structure is surrounded by the first upper side edge, the second upper side edge, the 3rd upper side edge and the 4th upper side edge, the
The intersection point of one upper side edge and the second upper side edge is upper right-hand end for the intersection point of upper left side end points, the 3rd upper side edge and the 4th upper side edge
Point, the angle between the first upper side edge and the second upper side edge and the angle phase between the 3rd upper side edge and the intersection point of the 4th upper side edge
It is same to be γ, wherein, 30 °≤γ≤45 °；
The lower surface of frustum structure is surrounded by the first lower side, the second lower side, the 3rd lower side and the 4th lower side, the
The intersection point of one lower side and the second lower side is lower right-hand end for the intersection point of lower left-hand end point, the 3rd lower side and the 4th lower side
Point, the angle between the first lower side and the second lower side and the angle phase between the 3rd lower side and the intersection point of the 4th lower side
It is same to be δ, δ ＜ γ；
Angle α between upper left side end points and the line and the lower surface of frustum structure of lower left-hand end point, 60≤α≤75 °.
The lower surface of frustum structure is arranged on ring flange, due to upper left side end points and the line and frustum of lower left-hand end point
Angle α between the lower surface of structure, 60≤α≤75 ° form the sharp edge in both sides, under exposed parts and frustum structure
Surface is being not vertical, exposed parts height detector profile RCS value reduction not after final optimization pass.
Further, rounding before arranging first between second upper side edge and the 3rd upper side edge, on the upside of in the of first
Rounding after first is arranged between side and the 4th upper side edge, arranges second in second lower side and the 3rd lower side
Front rounding, rounding after arranging second between the first lower side and the 4th lower side；
It is connected by the first cambered surface between rounding before rounding and second before first, after first after rounding and second between rounding
It is connected by the second cambered surface,
Angle between first cambered surface and the second cambered surface and the lower surface of frustum structure is β, 80 °≤β≤90 °.
Further, the height H of frustum structure, 30mm≤H≤50mm.Traditional 53.3mm, reduces one by comparison
Fixed height, reduces detector profile RCS value.
The present invention's has the advantage that with beneficial effect and is：
With the continuous development of modern science and technology, increasingly perfect for the Detection Techniques of aircraft, each is military strong now
There is powerful radar fence in state in native country, has early warning plane in the air, also has strategy early-warning system in space, and these systems pass through link
A powerful early warning net is constituted, the existence to aircraft constitutes serious threat.So the Stealth Fighter of aircraft into
In order to consider the important indicator of overall fighting capacity.Aircraft with stealth, that is, have the magic weapon afield depended on for existence,
The side oneself having the initiative in attack is caused again, increases the emergentness of attack.
Icing detector configuration design after optimization, reduces the Radar Cross Section of detector, for rapid at present
The stealthy unmanned plane of development and have man-machine, icing detector profile has the advantage of low RCS values after optimization, possesses the common spy that freezes
Survey the stealthy function that device does not have.
Description of the drawings
Fig. 1 is the icing detector profile front-view schematic diagram of low RCS of the invention.
Fig. 2 is the icing detector profile front-view schematic diagram of low RCS of the invention.
Fig. 3 is the icing detector profile schematic side view of low RCS of the invention.
Specific embodiment
Analysis improves front icing detector profile, and edge chamfer is larger, and direct reflection is stronger；And icing detector edge
It is vertical with aircraft surfaces, easily cause secondary reflection.
After optimization, profile is as shown in Figure 2.Including bottom platform and projection,
The bottom platform adopts the upper and lower surface of frustum structure, frustum structure to be plane, and is rhombus, convex
Post is arranged in the less plane of bottom platform；
The upper surface of frustum structure is surrounded by the first upper side edge, the second upper side edge, the 3rd upper side edge and the 4th upper side edge, the
The intersection point of one upper side edge and the second upper side edge is upper right-hand end for the intersection point of upper left side end points, the 3rd upper side edge and the 4th upper side edge
Point, the angle between the first upper side edge and the second upper side edge and the angle phase between the 3rd upper side edge and the intersection point of the 4th upper side edge
It is same to be γ, wherein, 30 °≤γ≤45 °；
The lower surface of frustum structure is surrounded by the first lower side, the second lower side, the 3rd lower side and the 4th lower side, the
The intersection point of one lower side and the second lower side is lower right-hand end for the intersection point of lower left-hand end point, the 3rd lower side and the 4th lower side
Point, the angle between the first lower side and the second lower side and the angle phase between the 3rd lower side and the intersection point of the 4th lower side
It is same to be δ, δ ＜ γ；
Angle α between upper left side end points and the line and the lower surface of frustum structure of lower left-hand end point, 60≤α≤75 °.
71 ° are preferably in embodiment.
Further, rounding before arranging first between second upper side edge and the 3rd upper side edge, on the upside of in the of first
Rounding after first is arranged between side and the 4th upper side edge, arranges second in second lower side and the 3rd lower side
Front rounding, rounding after arranging second between the first lower side and the 4th lower side；
It is connected by the first cambered surface between rounding before rounding and second before first, after first after rounding and second between rounding
It is connected by the second cambered surface,
Angle between first cambered surface and the second cambered surface and the lower surface of frustum structure is β, 80 °≤β≤90 °, in reality
85 ° are preferably in applying example.
The height H of frustum structure, 30mm≤H≤50mm, are preferably 45mm in embodiment.Traditional 53.3mm, therewith
Compare and reduce certain altitude, reduce detector profile RCS value.
The sharp edge of detector configuration design after improvement, and devise certain inclination angle, it is secondary for reducing
Reflection.
Icing detector and carrier combinations model RCS average statistical tables after the improvement of table 2
Using numerical computation method (CBFM) to having carried out RCS simulation calculations, simulation result before and after icing detector improvement
Show, after optimization, the RCS of icing detector is substantially reduced.Especially in horizontal polarization, most of frequency range RCS average can drop
Low 5～10dB.
Claims (3)
1. a kind of icing detector profile of low RCS, it is characterised in that including bottom platform and projection,
The bottom platform adopts frustum structure, and the upper and lower surface of frustum structure is plane, and is rhombus, and projection sets
It is placed in the less plane of bottom platform；
The upper surface of frustum structure is surrounded by the first upper side edge, the second upper side edge, the 3rd upper side edge and the 4th upper side edge, on first
Side is upper right-hand end point for the intersection point of upper left side end points, the 3rd upper side edge and the 4th upper side edge with the intersection point of the second upper side edge,
Angle between angle between first upper side edge and the second upper side edge and the 3rd upper side edge and the intersection point of the 4th upper side edge is identical
γ is, wherein, 30 °≤γ≤45 °；
The lower surface of frustum structure is surrounded by the first lower side, the second lower side, the 3rd lower side and the 4th lower side, under first
Side is lower right-hand end point for the intersection point of lower left-hand end point, the 3rd lower side and the 4th lower side with the intersection point of the second lower side,
Angle between angle between first lower side and the second lower side and the 3rd lower side and the intersection point of the 4th lower side is identical
It is δ, δ ＜ γ；
Angle α between upper left side end points and the line and the lower surface of frustum structure of lower left-hand end point, 60≤α≤75 °.
2. the icing detector profile of low RCS according to claim 1, it is characterised in that in second upper side edge and
Rounding before first is arranged between 3rd upper side edge, falls after arranging first between the first upper side edge and the 4th upper side edge
Circle, rounding, the first lower side and the 4th lower side before second lower side and the 3rd lower side arrange second
Between arrange second after rounding；
It is connected by the first cambered surface between rounding before rounding and second before first, is passed through between rounding after rounding and second after first
Second cambered surface is connected,
Angle between first cambered surface and the second cambered surface and the lower surface of frustum structure is β, 80 °≤β≤90 °.
3. the icing detector profile of low RCS according to claim 1, it is characterised in that the height H of frustum structure,
30mm≤H≤50mm。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611097529.5A CN106628192A (en) | 2016-12-02 | 2016-12-02 | Icing detector outline with small radar cross section (RCS) |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611097529.5A CN106628192A (en) | 2016-12-02 | 2016-12-02 | Icing detector outline with small radar cross section (RCS) |
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| Publication Number | Publication Date |
|---|---|
| CN106628192A true CN106628192A (en) | 2017-05-10 |
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ID=58814331
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611097529.5A Pending CN106628192A (en) | 2016-12-02 | 2016-12-02 | Icing detector outline with small radar cross section (RCS) |
Country Status (1)
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109212504A (en) * | 2018-10-09 | 2019-01-15 | 北京环境特性研究所 | To scattering carrier low with what is laterally designed before taking into account |
| CN114044164A (en) * | 2021-11-10 | 2022-02-15 | 北京环境特性研究所 | Low-scattering carrier for RCS (Radar Cross section) test of wing parts |
| CN114162347A (en) * | 2021-12-09 | 2022-03-11 | 北京环境特性研究所 | P-waveband low-scattering carrier and using method thereof |
Citations (5)
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| CN86205346U (en) * | 1986-07-19 | 1987-06-17 | 南京大学 | Combinative n-r probe for determination of moisture content and density |
| US20040231410A1 (en) * | 2003-03-10 | 2004-11-25 | Marc Bernard | Large spectrum icing conditions detector for optimization of aircraft safety |
| CN1673035A (en) * | 2003-11-18 | 2005-09-28 | 奥谢陶尔公司 | Ice detection assembly installed on an aircraft |
| US20050218268A1 (en) * | 2004-03-31 | 2005-10-06 | Rosemount Aerospace Inc. | Ice detector for improved ice detection at near freezing condition |
| CN101792021A (en) * | 2010-01-22 | 2010-08-04 | 华中科技大学 | Rotating body surface non-contact icing detector |
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2016
- 2016-12-02 CN CN201611097529.5A patent/CN106628192A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN86205346U (en) * | 1986-07-19 | 1987-06-17 | 南京大学 | Combinative n-r probe for determination of moisture content and density |
| US20040231410A1 (en) * | 2003-03-10 | 2004-11-25 | Marc Bernard | Large spectrum icing conditions detector for optimization of aircraft safety |
| CN1673035A (en) * | 2003-11-18 | 2005-09-28 | 奥谢陶尔公司 | Ice detection assembly installed on an aircraft |
| US20050218268A1 (en) * | 2004-03-31 | 2005-10-06 | Rosemount Aerospace Inc. | Ice detector for improved ice detection at near freezing condition |
| CN101792021A (en) * | 2010-01-22 | 2010-08-04 | 华中科技大学 | Rotating body surface non-contact icing detector |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109212504A (en) * | 2018-10-09 | 2019-01-15 | 北京环境特性研究所 | To scattering carrier low with what is laterally designed before taking into account |
| CN109212504B (en) * | 2018-10-09 | 2023-10-20 | 北京环境特性研究所 | Low scattering carrier with both forward and sideways designs |
| CN114044164A (en) * | 2021-11-10 | 2022-02-15 | 北京环境特性研究所 | Low-scattering carrier for RCS (Radar Cross section) test of wing parts |
| CN114044164B (en) * | 2021-11-10 | 2023-06-27 | 北京环境特性研究所 | Low-scattering carrier for RCS (wing component handling System) test of wing component |
| CN114162347A (en) * | 2021-12-09 | 2022-03-11 | 北京环境特性研究所 | P-waveband low-scattering carrier and using method thereof |
| CN114162347B (en) * | 2021-12-09 | 2023-06-27 | 北京环境特性研究所 | P-band low-scattering carrier and application method thereof |
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