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JP3695015B2 - Flying radome - Google Patents
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JP3695015B2 - Flying radome - Google Patents

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Publication number
JP3695015B2
JP3695015B2 JP28696196A JP28696196A JP3695015B2 JP 3695015 B2 JP3695015 B2 JP 3695015B2 JP 28696196 A JP28696196 A JP 28696196A JP 28696196 A JP28696196 A JP 28696196A JP 3695015 B2 JP3695015 B2 JP 3695015B2
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Prior art keywords
radome
antenna
thickness
curvature
transmitted
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JP28696196A
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Japanese (ja)
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JPH10135724A (en
Inventor
隆二 月舘
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Mitsubishi Electric Corp
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Mitsubishi Electric Corp
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Description

【0001】
【発明の属する技術分野】
本発明は、飛しょう体の電波誘導装置を小型軽量にするための飛しょう体用レドームの構造に関する。
【0002】
【従来の技術】
従来電波誘導装置を持つ飛しょう体は先端にアンテナを配置しており、このアンテナを空力荷重、空力加熱等から保護しなければならないため、電波特性を著しく劣化させない材料でできたレドームで覆っている。また、一般に飛しょう体は高速飛しょう、及び、高い旋回能力が要求されており、飛しょう体の先端にあるレドームは特に高い空力荷重、高い旋回荷重及び高い空力加熱に晒される。そのため、レドームは空力抵抗を小さくする形状にし、空力荷重や空力加熱に耐え、かつ、電波特性を著しく劣化させないセラミックスあるいは複合材料等を用いている。また、レドームに用いる材料は飛しょう体本体の材料より脆いため、強度的にレドームの取付け部は空力荷重によって生じる曲げモーメントに対して一番厳しいことになる。
【0003】
図5に飛しょう体の斜視図を示す。また、図6は飛しょう体の先端部の断面を示す。図において1はアンテナであり電波2を送信あるいは受信する。3はアンテナ1を揺動運動させるジンバル機構部であり、アンテナ1を回転半径4で回転させる。1aは上方にアンテナ1が向いた状態である。5は回転するアンテナ1と干渉しないクリアランス6があり、さらに、電波特性を著しく劣化させない材料でできたレドームである。7はレドーム5の線膨張係数と金属材料でできた飛しょう体本体8の線膨張係数の差によって生じる熱応力を緩和させるため樹脂系の複合材料でできたリングであり、レドーム5と接着剤9で接合しており、さらに、飛しょう体本体8にねじ10で固定している。レドーム5の長さはアンテナ1の送信あるいは受信する電波2がレドーム5に透過する部位よりやや後方に設定する。レドーム5の厚さは、素材の誘電率と使用電波の周波数から決まる1/2波長の整数倍の均一なもので、かつ、空力荷重11に対し許容応力の余裕安全率が0以上になるようにしている。
【0004】
図7に一般的なレドーム5の形状を示す。図においてDは飛しょう体の胴径、Lはレドーム5の長さ、Rはレドーム5の曲率半径、Xはレドーム5の先端からの距離、aはレドーム5とRの中心との距離、bは機軸とRの中心との距離、rはレドーム5の先端からXの距離における機軸とレドーム5の距離を示す。また、一般的なレドーム5の形状式は”数1”で求めることができる。
【0005】
【数1】

Figure 0003695015
【0006】
図8に一般的なレドーム5とアンテナ1の位置関係を示す。図においてtはレドーム5の厚さ、Rはレドーム5の曲率半径、Xiはレドーム5の先端とアンテナ1の揺動運動の中心位置の距離、cはアンテナ1の揺動半径、αはアンテナ1とレドーム5とのクリアランス6寸法を示す。また、一般的なレドーム5におけるアンテナ1の位置を決める式は”数2”で求めることができる。
【0007】
【数2】
Figure 0003695015
【0008】
【発明が解決しようとする課題】
従来の飛しょう体用レドームは以上のように構成されており次に示すような課題を有していた。
【0009】
飛しょう体は高速で飛しょうするためレドーム5には大きな空力荷重11が生じることとなる。図9はレドーム5に加わる空力荷重11を示す。図においてレドーム5に加わる空力荷重11は機軸方向の空力荷重11aと機軸垂直方向の空力荷重11bに分けることができる。図10に飛しょう体の機軸垂直方向の空力荷重11bを受けたときの曲げモーメント図を示す。図において縦軸は曲げモーメントを、横軸は飛しょう体先端からの距離を示す。12は曲げモーメントであり、High Speed時の曲げモーメントを12aに示し、Low Speed時の曲げモーメントを12bに示す。
【0010】
ここで、飛しょう体が高い速度で飛しょうする場合、レドーム5の取付け部に高い曲げモーメント11aが生じることとなり、レドーム5の強度を保つために、肉厚を厚くしなければならない。飛しょう体の胴径Dが変わらないとすれば、レドーム5の肉厚tを増やすこととなり、”数2”よりアンテナ1の直径を小さくしてアンテナ1の揺動半径cを小さくするか、あるいは、レドーム5をアンテナ1と干渉しない位置まで前方に移動しなければならない。アンテナ1の直径を小さくすれば、アンテナ特性が悪くなり、また、レドーム5を前方に移動すれば必然的にレドーム5は長くなるため、取付け部に生じる曲げモーメントはさらに大きくなる。また、レドーム5の厚肉化と延長化により質量の増加と大型化となってしまう。また、アンテナ1の直径を大きくする場合も同様で、レドーム5を延長化しなければならないため、必然的に曲げモーメントが大きくなり、質量、増加、大形化となってしまう。さらにまた、レドームの厚さはレドームの素材の誘電率と使用電波の周波数から決まるので、肉厚の変更は質量増加、大形化に大きく影響する。よって、飛しょう体の胴径が変わらないとすれば、アンテナ1の直径を大きくしたり、小型軽量化ができないという問題があった。
【0011】
本発明は、上記のような課題を解決するためになされたもので、飛しょう体のアンテナ直径を大きくでき、かつ、レドームの小型軽量化を目的とする。
【0012】
【課題を解決するための手段】
第1の発明のレドームは、電波誘導装置を備えた飛しょう体に取り付けられ、ジンバル機構により揺動運動するアンテナを覆い、素材の誘電率と使用電波の周波数から決まる波長の1/2の整数倍の厚で構成されるレドームであって、その内側に上記アンテナの揺動運動とは干渉せず、かつ、送信あるいは受信する電波が透過する部位はミサイル本体に取り付く根元部より1/2波長の整数倍以上薄くした。
【0013】
また、第2の発明のレドームは、第1の発明のものに加えて、ミサイル本体に取り付く根元部を素材の誘電率と使用電波の周波数から決まる波長の厚さより薄くした。
【0014】
また、第3の発明のレドームは、第1の発明のものに加えて、送信あるいは受信する電波が透過する薄肉部とミサイル本体に取り付く根元部とが交わる部分が、ミサイルの機軸と平行となるように偏肉にした。
【0015】
また、第4の発明のレドームは、電波誘導装置を備えた飛しょう体に取り付けられ、ジンバル機構により揺動運動するアンテナを覆い、素材の誘電率と使用電波の周波数から決まる波長の1/2の整数倍の厚さで構成されるレドームであって、その内側に直径を大きくした上記アンテナの揺動運動で干渉する部位を切り欠いた。
【0016】
【発明の実施の形態】
実施の形態1.
図1はこの発明の実施の形態1を示す飛しょう体用レドームの断面図であり、1〜11は上記従来の飛しょう体用レドームとまったく同一のものである。図において13はレドーム5の外側を変えずに内側をアンテナ1の揺動運動と干渉しないクリアランス6を有し、かつ、送信あるいは受信の電波が透過する部位は、ミサイル本体8側に取り付く根元部14に比べて、その厚さを、素材の誘電率と使用電波の周波数から決まる波長の1/2の整数倍以上薄くして、薄肉部を構成する。薄肉部では、アンテナ1とレドーム5とのクリアランス6が大きくなる。そのため、アンテナ1の直径を変えなければアンテナ1の位置はレドーム5の先端側に移動できることになり、逆に言えばレドーム5が短くなり小型軽量化ができ、さらに、レドームに加わる空力荷重11を小さくすることができる。また、レドーム5の大きさとアンテナ1の位置を変えなければアンテナ1の直径を大きくすることができるのでアンテナ特性の向上になる。またさらに、電波2がレドーム5を透過する距離が短いため電波2の損失が小さくなるのでアンテナ特性も向上できる。強度的には、曲げモーメント12が一番厳しいレドーム5の根元部14の構造は変えていないので従来と同様であり、曲げモーメント12が小さくなるところからレドーム5の薄肉部13とするので十分満足できる。
【0017】
実施の形態2.
図2はこの発明の実施の形態2の飛しょう体用レドームの概要を示す断面図である。図において15はミサイル本体8側に取り付くレドーム5の根元部であり、アンテナ1の送信あるいは受信する電波5の透過に関係しない部位であるため、空力荷重11に耐える厚さのみとなり、素材の誘電率と使用電波の周波数から決まる厚さより薄くすることができるので小型軽量化が可能となる。
【0018】
実施の形態3.
図3はこの発明の実施の形態3の飛しょう体用レドームの概要を示す断面図である。図において、16は送信あるいは受信する電波2が透過する薄肉部13とミサイル本体8に取り付く根元部14とが交わる部分をミサイルの機軸と平行となるように肉厚を変化させた偏肉部であり、段などの局部的に急変する箇所を無くしたので、空力荷重11により生じる応力集中を避けることができる。
【0019】
実施の形態4.
図4はこの発明の実施の形態4を示す飛しょう体用レドームの断面図である。17は直径を大きくしたアンテナ1の揺動運動で干渉する部位のみをクリアランス6を付加した大きさでレドーム5を切り欠いた切欠き部であり、レドーム5の大きさを変えずにアンテナ1の直径を大きくするので、アンテナ特性の向上ができる。
【0020】
【発明の効果】
第1の発明によれば、レドームの外側を変えずに内側をアンテナの揺動運動と干渉しないクリアランスを有し、かつ、送信あるいは受信する電波が透過する部位はミサイル本体に取り付く根元部より1/2波長の整数倍以上薄くすることにより、レドームが短くなり小型軽量化ができ、さらに、レドームに加わる空力荷重を小さくさせることができた。あるいは、アンテナの直径を大きくすることができるのでアンテナ特性の向上ができた。またさらに、電波がレドームを透過する距離が短いため、電波の損失が小さくなるのでアンテナ特性も向上できる。
【0021】
第2の発明によれば、ミサイル本体側に取り付くレドームの根元部の厚さを空力荷重11に耐える厚さにするため、素材の誘電率と使用電波の周波数から決まる厚さより薄くすることができるので小型軽量化ができた。
【0022】
第3の発明によれば、送信あるいは受信する電波が透過する薄肉部とミサイル本体に取り付く根元部とが交わる部分を、ミサイルの機軸と平行になるように偏肉することにより、空力荷重により上記偏肉部に生じる応力集中を避けることができた。
【0023】
第4の発明によれば、直径を大きくしたアンテナの揺動運動で干渉する部位のみをクリアランスを付加した大きさで切り欠いたことにより、レドームの大きさを変えずにアンテナ直径を大きくすることができ、アンテナ特性の向上ができた。
【図面の簡単な説明】
【図1】 この発明によるレドームの実施の形態1を示す断面図である。
【図2】 この発明によるレドームの実施の形態2を示す断面図である。
【図3】 この発明によるレドームの実施の形態3を示す断面図である。
【図4】 この発明によるレドームの実施の形態4を示す断面図である。
【図5】 従来の飛しょう体の斜視図を示す。
【図6】 従来の飛しょう体の先端の断面図を示す。
【図7】 従来の一般的なレドーム形状。
【図8】 従来の一般的なレドームとアンテナの位置関係図。
【図9】 従来のレドームに加わる空力荷重図を示す。
【図10】 従来の飛しょう体に加わる曲げモーメント図を示す。
【符号の説明】
1 アンテナ、2 電波、3 ジンバル機構部、4 回転半径、5 レドーム、6 クリアランス、7 リング、8 飛しょう体本体、9 接着剤、10 ねじ、11 空力荷重、12 曲げモーメント、13 薄肉部、14 根元部、15 根元部、16 偏肉部、17 切欠き部。[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a structure of a flying object radome for reducing the size and weight of a flying object radio wave guiding apparatus.
[0002]
[Prior art]
Conventional flying bodies with radio wave induction devices have an antenna at the tip, and this antenna must be protected from aerodynamic loads, aerodynamic heating, etc., so it is covered with a radome made of a material that does not significantly degrade radio wave characteristics. Yes. In general, the flying body is required to fly at high speed and have a high turning ability, and the radome at the tip of the flying body is particularly exposed to a high aerodynamic load, a high turning load, and a high aerodynamic heating. Therefore, the radome has a shape that reduces aerodynamic resistance, and uses ceramics or a composite material that can withstand aerodynamic loads and aerodynamic heating and that does not significantly deteriorate radio wave characteristics. In addition, since the material used for the radome is more fragile than the material of the flying body, the radome mounting portion is the most severe with respect to the bending moment generated by the aerodynamic load.
[0003]
FIG. 5 shows a perspective view of the flying object. Moreover, FIG. 6 shows the cross section of the front-end | tip part of a flying body. In the figure, reference numeral 1 denotes an antenna which transmits or receives a radio wave 2. Reference numeral 3 denotes a gimbal mechanism that swings the antenna 1, and rotates the antenna 1 with a rotation radius 4. 1a is a state in which the antenna 1 faces upward. Reference numeral 5 denotes a radome made of a material that has a clearance 6 that does not interfere with the rotating antenna 1 and that does not significantly deteriorate radio wave characteristics. Reference numeral 7 denotes a ring made of a resin-based composite material for relieving thermal stress caused by the difference between the linear expansion coefficient of the radome 5 and the linear expansion coefficient of the flying body 8 made of a metal material. 9, and further fixed to the flying body 8 with screws 10. The length of the radome 5 is set slightly behind the portion where the radio wave 2 transmitted or received by the antenna 1 is transmitted to the radome 5. The thickness of the radome 5 is a uniform one that is an integral multiple of a half wavelength determined by the dielectric constant of the material and the frequency of the radio wave used, and the marginal safety factor of the allowable stress with respect to the aerodynamic load 11 is 0 or more. I have to.
[0004]
FIG. 7 shows the shape of a general radome 5. In the figure, D is the diameter of the flying body, L is the length of the radome 5, R is the radius of curvature of the radome 5, X is the distance from the tip of the radome 5, a is the distance between the radome 5 and the center of R, b Is the distance between the axle and the center of R, and r is the distance between the axle and the radome 5 at a distance X from the tip of the radome 5. Further, the general shape of the radome 5 can be obtained by “Equation 1”.
[0005]
[Expression 1]
Figure 0003695015
[0006]
FIG. 8 shows a positional relationship between a general radome 5 and the antenna 1. In the figure, t is the thickness of the radome 5, R is the radius of curvature of the radome 5, Xi is the distance between the tip of the radome 5 and the center position of the swing motion of the antenna 1, c is the swing radius of the antenna 1, and α is the antenna 1 And 6 shows the clearance 6 dimension between the radome 5 and the radome 5. Further, an equation for determining the position of the antenna 1 in the general radome 5 can be obtained by “Equation 2”.
[0007]
[Expression 2]
Figure 0003695015
[0008]
[Problems to be solved by the invention]
The conventional flying object radome is configured as described above and has the following problems.
[0009]
Since the flying body flies at a high speed, a large aerodynamic load 11 is generated in the radome 5. FIG. 9 shows an aerodynamic load 11 applied to the radome 5. In the figure, the aerodynamic load 11 applied to the radome 5 can be divided into an aerodynamic load 11a in the machine axis direction and an aerodynamic load 11b in the machine axis vertical direction. FIG. 10 shows a bending moment diagram when the flying body receives an aerodynamic load 11b in the vertical direction. In the figure, the vertical axis represents the bending moment, and the horizontal axis represents the distance from the tip of the flying object. Reference numeral 12 denotes a bending moment. The bending moment at High Speed is indicated by 12a, and the bending moment at Low Speed is indicated by 12b.
[0010]
Here, when the flying body flies at a high speed, a high bending moment 11a is generated at the mounting portion of the radome 5, and the wall thickness must be increased in order to maintain the strength of the radome 5. If the body diameter D of the flying object does not change, the thickness t of the radome 5 is increased, and the diameter of the antenna 1 is made smaller than “Equation 2” to make the oscillation radius c of the antenna 1 smaller. Alternatively, the radome 5 must be moved forward to a position where it does not interfere with the antenna 1. If the diameter of the antenna 1 is reduced, the antenna characteristics are deteriorated, and if the radome 5 is moved forward, the radome 5 inevitably becomes longer, so that the bending moment generated in the mounting portion is further increased. Further, the radome 5 becomes thicker and longer, resulting in an increase in mass and an increase in size. Similarly, when the diameter of the antenna 1 is increased, since the radome 5 must be extended, the bending moment is inevitably increased, resulting in an increase in mass, an increase in size, and an increase in size. Furthermore, since the thickness of the radome is determined by the dielectric constant of the radome material and the frequency of the radio wave used, changes in the thickness greatly affect the increase in mass and size. Therefore, if the body diameter of the flying body does not change, there is a problem that the diameter of the antenna 1 cannot be increased and the size and weight cannot be reduced.
[0011]
The present invention has been made to solve the above-described problems, and has an object of increasing the antenna diameter of the flying object and reducing the size and weight of the radome.
[0012]
[Means for Solving the Problems]
The radome of the first invention is attached to a flying body equipped with a radio wave induction device, covers an antenna that swings by a gimbal mechanism, and is an integer of 1/2 of a wavelength determined from the dielectric constant of the material and the frequency of the radio wave used. It is a radome composed of double the thickness, and the part that does not interfere with the oscillation movement of the antenna inside and transmits radio waves to be transmitted or received is 1/2 wavelength from the root part attached to the missile body It was thinner than an integer multiple of.
[0013]
In addition to the first invention, the radome according to the second invention has a base portion attached to the missile body thinner than the thickness determined by the dielectric constant of the material and the frequency of the radio wave used.
[0014]
In addition to the first invention, the radome according to the third invention has a portion where a thin wall portion through which radio waves to be transmitted or received pass and a root portion attached to the missile body intersect with the axis of the missile. So that it was uneven.
[0015]
The radome of the fourth invention is attached to a flying object equipped with a radio wave induction device, covers an antenna that swings and moves by a gimbal mechanism, and has a wavelength determined by the dielectric constant of the material and the frequency of the radio wave used. And a portion that interferes with the swinging motion of the antenna whose diameter is increased inside.
[0016]
DETAILED DESCRIPTION OF THE INVENTION
Embodiment 1 FIG.
FIG. 1 is a cross-sectional view of a flying object radome showing Embodiment 1 of the present invention. Reference numerals 1 to 11 are identical to the conventional flying object radome. In the figure, 13 has a clearance 6 that does not interfere with the swinging motion of the antenna 1 without changing the outside of the radome 5, and a portion through which a radio wave transmitted or received is transmitted is a root portion that is attached to the missile body 8 side. Compared to 14 , the thickness is made thinner than an integral multiple of ½ of the wavelength determined from the dielectric constant of the material and the frequency of the radio wave used to form the thin portion . In the thin portion, the clearance 6 between the antenna 1 and the radome 5 becomes large. Therefore, if the diameter of the antenna 1 is not changed, the position of the antenna 1 can be moved to the tip side of the radome 5, conversely speaking, the radome 5 can be shortened to reduce the size and weight, and further, the aerodynamic load 11 applied to the radome can be reduced. Can be small. Further, if the size of the radome 5 and the position of the antenna 1 are not changed, the diameter of the antenna 1 can be increased, so that the antenna characteristics are improved. Furthermore, since the distance through which the radio wave 2 passes through the radome 5 is short, the loss of the radio wave 2 is reduced, so that the antenna characteristics can be improved. In terms of strength, the structure of the base portion 14 of the radome 5 where the bending moment 12 is the most severe is not changed, so that it is the same as the conventional one, and the thin portion 13 of the radome 5 is sufficiently satisfied since the bending moment 12 becomes small. it can.
[0017]
Embodiment 2. FIG.
FIG. 2 is a sectional view showing an outline of a flying object radome according to a second embodiment of the present invention. In the figure, reference numeral 15 denotes a base portion of the radome 5 attached to the missile body 8 side, which is a part not related to transmission of the radio wave 5 transmitted or received by the antenna 1, and therefore only has a thickness that can withstand the aerodynamic load 11. Since the thickness can be made thinner than the thickness determined from the rate and the frequency of the radio wave used, the size and weight can be reduced.
[0018]
Embodiment 3 FIG.
3 is a sectional view showing an outline of a flying object radome according to a third embodiment of the present invention. In the figure, reference numeral 16 denotes an uneven thickness portion in which the thickness is changed so that the portion where the thin portion 13 through which the radio wave 2 to be transmitted or received passes and the root portion 14 attached to the missile body 8 intersect is parallel to the axis of the missile. In addition, since there are no places such as steps that suddenly change locally, stress concentration caused by the aerodynamic load 11 can be avoided.
[0019]
Embodiment 4 FIG.
4 is a cross-sectional view of a flying object radome according to a fourth embodiment of the present invention. Reference numeral 17 denotes a cutout portion in which only the portion that interferes with the swinging motion of the antenna 1 having a large diameter is cut out with the clearance 6 and the radome 5 is cut out. Since the diameter is increased, the antenna characteristics can be improved.
[0020]
【The invention's effect】
According to the first aspect of the present invention, there is a clearance that does not interfere with the swinging motion of the antenna without changing the outer side of the radome, and the portion through which radio waves to be transmitted or received are transmitted is 1 from the root portion attached to the missile body. By reducing the thickness by at least an integral multiple of the two wavelengths, the radome was shortened to reduce the size and weight, and the aerodynamic load applied to the radome could be reduced. Alternatively, the antenna characteristics can be improved because the diameter of the antenna can be increased. Furthermore, since the distance through which the radio wave passes through the radome is short, the loss of the radio wave is reduced, so that the antenna characteristics can be improved.
[0021]
According to the second invention, since the thickness of the base portion of the radome attached to the missile body side is made to withstand the aerodynamic load 11, it can be made thinner than the thickness determined from the dielectric constant of the material and the frequency of the radio wave used. So we were able to reduce the size and weight.
[0022]
According to the third invention, the portion where the thin wall portion through which the transmitted or received radio wave passes and the root portion attached to the missile body intersect with each other so as to be parallel to the axis of the missile, thereby causing the aerodynamic load to It was possible to avoid stress concentration in the uneven thickness part.
[0023]
According to the fourth invention, the antenna diameter can be increased without changing the size of the radome by cutting out only the part that interferes with the swinging motion of the antenna with the increased diameter by a size with a clearance added. And improved the antenna characteristics.
[Brief description of the drawings]
FIG. 1 is a cross-sectional view showing a first embodiment of a radome according to the present invention.
FIG. 2 is a cross-sectional view showing a second embodiment of the radome according to the present invention.
FIG. 3 is a sectional view showing a third embodiment of the radome according to the present invention.
FIG. 4 is a sectional view showing a fourth embodiment of the radome according to the present invention.
FIG. 5 shows a perspective view of a conventional flying object.
FIG. 6 shows a cross-sectional view of the tip of a conventional flying object.
FIG. 7 shows a conventional general radome shape.
FIG. 8 is a diagram showing the positional relationship between a conventional general radome and an antenna.
FIG. 9 is a diagram showing an aerodynamic load applied to a conventional radome.
FIG. 10 shows a bending moment applied to a conventional flying object.
[Explanation of symbols]
1 antenna, 2 radio wave, 3 gimbal mechanism, 4 turning radius, 5 radome, 6 clearance, 7 ring, 8 flying body, 9 adhesive, 10 screw, 11 aerodynamic load, 12 bending moment, 13 thin part, 14 Root part, 15 Root part, 16 Wall thickness part, 17 Notch part.

Claims (2)

電波誘導装置を備えた飛しょう体に取り付けられた樹脂系複合材料のリングと接着固定され、ジンバル機構により揺動運動するアンテナを覆い、素材の誘電率と使用電波の周波数から決まる波長の1/2の整数倍の厚で構成された、外形に滑らかな2次曲面を有したレドームであって、
レドームの内側と上記アンテナとの間には、上記アンテナの揺動運動によって干渉しないように、上記リングに取り付けられるレドームの根元部の厚さよりも、短い距離の隙間が設けられ、
送信あるいは受信する電波が透過する部位は、上記根元部とは異なる厚さを有して、根元部の厚さよりも上記波長の1/2の整数倍以上薄く、
レドームの先端と上記アンテナの揺動運動の中心位置の距離Xiは、上記隙間α、電波が透過する部位の厚さt、レドームの曲率半径R、レドームと曲率半径Rの曲率中心との距離a、機軸と曲率半径Rの曲率中心との距離b、飛しょう体の胴径D、及び上記アンテナの揺動半径Cとから、
Figure 0003695015
で与えられる、
ことを特徴とする飛しょう体用レドーム。
Is ring and bonded to resin-based composite material attached to flying object having a radio wave guiding device, covering the antenna swings by the gimbal mechanism, the wavelength determined from the dielectric constant using radio waves of the frequency of the material 1 A radome having a smooth quadric surface on the outer shape, which is composed of an integral multiple of / 2,
Between the inside of the radome and the antenna, a gap of a shorter distance than the thickness of the root portion of the radome attached to the ring is provided so as not to interfere with the swinging movement of the antenna .
The part through which radio waves to be transmitted or received are transmitted has a thickness different from that of the base part, and is thinner than the thickness of the base part by an integer multiple of 1/2 of the wavelength,
The distance Xi between the tip of the radome and the center position of the swinging motion of the antenna is the gap α, the thickness t of the portion through which radio waves are transmitted, the radius of curvature R of the radome, and the distance a between the radome and the center of curvature of the radius of curvature R From the distance b between the machine axis and the center of curvature of the radius of curvature R, the body diameter D of the flying body, and the oscillation radius C of the antenna,
Figure 0003695015
Given in the
A radome for flying objects characterized by that.
送信あるいは受信する電波が透過する薄肉部とミサイル本体に取り付く根元部とが交わる部分が、ミサイルの機軸と平行となるように偏肉することを特徴とする請求項1の飛しょう体用レドーム。  2. The flying object radome according to claim 1, wherein a portion where a thin portion through which a radio wave to be transmitted or received passes and a root portion attached to the missile body intersect is unevenly parallel to the axis of the missile.
JP28696196A 1996-10-29 1996-10-29 Flying radome Expired - Lifetime JP3695015B2 (en)

Priority Applications (1)

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Application Number Priority Date Filing Date Title
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JP3695015B2 true JP3695015B2 (en) 2005-09-14

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP5790015B2 (en) * 2011-02-18 2015-10-07 三菱電機株式会社 Flying object and radome ring for flying object
JP5713859B2 (en) * 2011-09-28 2015-05-07 株式会社東芝 Flying body
JP6278924B2 (en) * 2015-04-08 2018-02-14 三菱電機株式会社 Method for manufacturing flying radome
JP6727151B2 (en) * 2017-02-13 2020-07-22 三菱電機株式会社 Radome for flying objects
RU2742294C1 (en) * 2020-07-07 2021-02-04 Акционерное общество «Обнинское научно-производственное предприятие «Технология» им. А.Г.Ромашина» Fairing

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