Composite materials with electrically conductive and delamination resistant properties
US-2015166743-A1 · Jun 18, 2015 · US
Geodesic radome
US9397392B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-9397392-B2 |
| Application number | US-201214001554-A |
| Country | US |
| Kind code | B2 |
| Filing date | Mar 5, 2012 |
| Priority date | Mar 4, 2011 |
| Publication date | Jul 19, 2016 |
| Grant date | Jul 19, 2016 |
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- Title
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Abstract
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The invention relates to a geodesic radome comprising shaped panels containing a consolidated plurality of plies, the plies comprising polyolefin tapes, wherein the shaped panels have a compressive strength of between 10 MPa and 100 MPa, an interlaminar shear strength of between 3 MPa and 75 MPa and a thermal expansion of between 1e−6 1/K and 50e−6 1/K.
First claim
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The invention claimed is: 1. A geodesic radome comprising shaped panels containing a consolidated plurality of plies, the plies comprising polyolefin tapes, wherein the shaped panels have a compressive strength of between 10 MPa and 100 MPa, an interlaminar shear strength of between 3 MPa and 75 MPa and a thermal expansion of between 1 e-6 1/K and 50e-6 1/K. 2. The radome according to claim 1 wherein the shaped panels have a shape chosen from the group consisting of triangles, rectangles, squares, hexagons, octagons, other multi-sided shapes having rectilinear or curved sides, an orange peel-like shape, and combinations thereof. 3. The radome according to claim 1 wherein said radome is a structure that can be mapped entirely from triangular panels. 4. The radome according to claim 1 wherein said radome comprises gore-shaped panels. 5. The radome according to claim 1 wherein said radome comprises five-sided panels and six-sided panels. 6. The radome according to claim 1 wherein said radome has a ground diameter of at least 3 m. 7. The radome according to claim 1 wherein said radome has a height of at least 3 m. 8. The radome according to claim 1 wherein said radome has a ground diameter/height ratio of between 0.1 and 100. 9. The radome according to claim 1 wherein the tapes have a width of between 1 mm and 2000 mm. 10. The radome according to claim 1 wherein the polyolefin tapes are polyethylene tapes, more preferably high or ultrahigh molecular weight polyethylene ([U]HMWPE) tapes. 11. The radome according to claim 1 wherein the polyolefin tapes are polyethylene tapes and wherein the polyethylene tapes are made by a solid-state process. 12. The radome according to claim 1 wherein the polyolefin tapes and more in particular of the polyethylene tapes have a tensile strength of preferably at least 0.5 GPa. 13. The radome according to claim 1 wherein the polyolefin tapes and more in particular of the polyethylene tapes have a tensile modulus of preferably at least 30 GPa. 14. The radome according to claim 1 wherein the plies contain a fabric chosen from the group consisting of woven fabrics, knitted fabrics, plaited fabrics, braided fabrics, non-woven fabrics and combinations thereof. 15. The radome according to claim 1 wherein the shaped panels are substantially free of any binder or matrix material.
Assignees
Inventors
Classifications
and shaping or impregnating by compression {, i.e. combined with compressing after the lay-up operation} · CPC title
- H01Q1/42Primary
Housings not intimately mechanically associated with radiating elements, e.g. radome · CPC title
- B29C70/04Primary
comprising reinforcements only, e.g. self-reinforcing plastics · CPC title
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Frequently asked questions
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- What does patent US9397392B2 cover?
- The invention relates to a geodesic radome comprising shaped panels containing a consolidated plurality of plies, the plies comprising polyolefin tapes, wherein the shaped panels have a compressive strength of between 10 MPa and 100 MPa, an interlaminar shear strength of between 3 MPa and 75 MPa and a thermal expansion of between 1e−6 1/K and 50e−6 1/K.
- Who is the assignee on this patent?
- Van Oosterbosch Eelco, Nickel Reimo, Thompson Chae, and 2 more
- What technology area does this patent fall under?
- Primary CPC classification H01Q1/42. Mapped technology areas include Electricity.
- When was this patent published?
- Publication date Tue Jul 19 2016 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 1 related publication on this page (citations in our corpus or others sharing the same primary CPC).