Syntactic foam radome structure
View Patent ↗A radome wall structure includes one or more laminate plies, a first syntactic foam layer on one side of the one or more laminate plies, and a second syntactic foam layer on the other side of the one or more laminate plies. One or more laminate plies are between a third outer syntactic foam layer and the first syntactic foam layer and one or more laminate plies are between a fourth inner syntactic foam layer and the second syntactic foam layer. An interior matching layer is adhered to the fourth inner syntactic foam layer.
1. A radome wall structure comprising:
one or more laminate plies;
a first syntactic foam layer on one side of the one or more laminate plies;
a second syntactic foam layer on the other side of the one or more laminate plies;
a third outer syntactic foam layer;
one or more laminate plies between the third outer syntactic foam layer and the first syntactic foam layer;
a fourth inner syntactic foam layer;
one or more laminate plies between the fourth inner syntactic foam layer and the second syntactic foam layer; and
an interior matching layer on the fourth inner syntactic foam layer.
2. The radome wall structure of claim 1 further including a paint layer on the third outer syntactic foam layer.
3. The radome wall structure of claim 1 in which the syntactic foam layers include a resin mixed with gas filled structures.
4. The radome wall structure of claim 1 in which each laminate ply includes a glass or quartz fabric impregnated with a resin.
5. The radome wall structure of claim 1 in which the interior matching layer is made of foam and is adhered to the fourth inner syntactic foam layer.
6. A radome wall structure comprising:
a core including:
one or more laminate plies sandwiched between first and second syntactic foam layers,
a laminate layer including one or more plies on the first syntactic foam layer, and
a laminate layer including one or more plies on the second syntactic foam layer;
an outer syntactic foam matching layer adjacent one side of the core;
an inner syntactic foam matching layer adjacent the opposite side of the core; and
an interior matching layer adjacent the inner syntactic foam matching layer.
7. The radome wall structure of claim 6 further including a paint layer on the outer syntactic foam matching layer.
8. The radome wall structure of claim 6 in which the syntactic foam layers include a resin mixed with gas filled structures.
9. The radome wall structure of claim 6 in which each laminate ply is glass or quartz fabric impregnated with a resin.
10. The radome wall structure of claim 6 in which the interior matching layer is made of foam.
11. The radome wall structure of claim 6 in which there is one ply sandwiched between the first and second syntactic foam layers.
12. The radome wall structure of claim 6 in which the laminate layer on the first syntactic foam layer includes two plies.
13. The radome wall structure of claim 6 in which the laminate layer on the second syntactic foam layer includes two plies.
14. The radome wall structure of claim 6 in which the core has a thickness of ½ wavelength, the syntactic foam matching layers have a thickness of ¼ wavelength, and the internal matching layer has a thickness of ¼ wavelength.
15. A radome wall structure comprising:
a ½ wavelength thickness core including layers of syntactic foam and laminate materials;
inner and outer ¼ wavelength thickness syntactic foam matching layers; and
a ¼ wavelength thickness interior matching layer.
16. The radome wall structure of claim 15 further including a paint layer on the outer syntactic foam layer.
17. The radome wall structure of claim 15 in which the syntactic foam layers have a dielectric constant 1.7 to 2.2 and include a resin mixed with gas filled structures.
18. The radome wall structure of claim 15 in which each laminate ply is glass or quartz fabric impregnated with a resin.
19. The radome wall structure of claim 15 in which the interior matching layer is made of foam with a dielectric constant 1.1 to 1.4.