Containment system and increased strength radome assembly
View Patent ↗A containment system for containing all or part of a radome and an external subassembly that is protected by the radome is disclosed. One embodiment of the containment system comprises a fabric material and an attachment system for attaching the fabric material to the radome and to the radome attachment ring. An increased strength radome for covering the external subassembly is also disclosed.
1. A containment system for prohibiting debris from leaving an outside surface of an aircraft in a situation where a radome covering an external sub-system that is attached to the outside surface of the aircraft is compromised and where the radome is attached to the outside surface of the aircraft by an attachment member, the containment system comprising: a flexible fabric containment bag comprising a flexible fabric netting material that is attached to an inside surface of the radome and the external sub-system such that the flexible fabric netting material covers the entire external sub-system; and
an attachment system for attaching an end of the flexible fabric containment bag to the attachment member at multiple points along the end of the flexible fabric containment bag;
wherein the attachment system further comprises a limited peel-off force adhesive resin for adhesion of the flexible fabric containment bag to the inside of the radome at a plurality of distinct points so as to keep the flexible fabric containment bag from interfering with the external subsystem.
2. The containment system of claim 1 , wherein the attachment system comprises a plurality of battens that attach to the attachment member.
3. The containment system of claim 2 , further comprising one alignment fastener for each batten that keeps the battens in alignment during installation.
4. The containment system of claim 2 , wherein the attachment member is a radome attachment ring.
5. The containment system of claim 4 , wherein the plurality of battens are configured to attach to the radome attachment ring on the inside of the radome attachment ring.
6. The containment system of claim 2 , wherein the end of the flexible fabric containment bag is wrapped around the plurality of battens.
7. The containment system of claim 6 , wherein top part of the plurality of battens that the fabric is wrapped around is offset from the radome attachment ring by a predetermined height.
8. The containment system of claim 7 , wherein the height is less than or equal to 2 inches.
9. The containment system of claim 2 , further comprising a plurality of attachment fasteners, wherein each of the plurality of attachment fasteners feed through a respective aperture in the radome and through a respective aperture in the radome attachment member to secure the plurality of battens to the attachment member.
10. The containment system of claim 9 , further comprising a plurality of nut plates and spacers each nut place and space further securing the plurality of battens to the radome through respective apertures in the radome.
11. The containment system of claim 1 , wherein the limited peel-off force adhesive resin further provides for breaking away of the flexible fabric containment bag from the inside of the radome surface above predetermined threshold forces.
12. The containment system of claim 1 , wherein the flexible fabric containment bag comprises holes that are sized to contain debris from the external sub-system.
13. The containment system of claim 1 , wherein the flexible fabric containment bag comprises holes that are sized so that the fabric is flexible to be able to conform to the inside surface of the radome.
14. The containment system of claim 1 , wherein the flexible fabric containment bag comprises a thermoplastic material.
15. The containment system of claim 14 , wherein the flexible fabric containment bag comprises a low RF-loss, high aspect ratio polymer material selected so as to not interfere with an RF performance of the external subsystem.
16. The containment system of claim 15 , wherein the flexible fabric containment bag comprises Spectra, Innegra, or Kevlar.
17. The containment system of claim 14 , wherein the flexible fabric containment bag has a thickness that is less than 0.1″.
18. The containment system of claim 14 , wherein the flexible fabric containment bag has a strength of at least 500 lbs per linear inch.
19. The containment system of claim 1 , further comprising the radome having at least one layer of a protective polymer film or a micro-layered polyester film, thereby providing an increased strength and shatter resistance radome.
20. The containment system of claim 19 , wherein the at least one layer of a protective polymer film or a micro-layered polymer film is applied to an outer surface of the radome.
21. The containment system of claim 19 , wherein the at least one layer of a protective polymer film or a micro-layered polymer film is at least one layer of the radome.
22. The containment system of claim 19 , wherein the at least one layer of a protective polymer film or a micro-layered polymer film is applied to an inner surface of the radome.
23. The containment system of claim 19 , wherein the at least one layer of a protective polyurethane film or a micro-layered polyester film comprises 3M's Ultra 600.