Vehicle and structure shield with flexible frame
A protection system includes a net with lines connected at nodes and hard points attached to at least select nodes. A frame supports the net and positions it in a spaced relationship with respect to a vehicle or structure. The frame preferably includes select adjacent tubular members connected via a flexure to prevent damage to the frame when impacted.
1. A protection system comprising:
a net with lines connected at nodes;
hard points attached to at least select nodes; and
a frame supporting the net and positioning it in a spaced relationship with respect to a vehicle or structure, the frame including:
tubular members, and
select adjacent tubular members connected via a flexure configured to prevent damage to the frame when impacted.
2. The protection system of claim 1 in which the adjacent tubular members are hollow and the flexure is a rod inserted into the hollow tubular member.
3. The protection system of claim 2 in which the rod is made of rubber.
4. The protection system of claim 2 in which the rod is fastened to each hollow tube member.
5. The protection system of claim 1 in which the select adjacent tubular members are at the bottom of the frame.
6. The protection system of claim 1 in which the adjacent tubular members are oriented in the same direction and the flexure is straight.
7. The protection system of claim 1 in which the adjacent tubular members are at a right angle to each other and the flexure is angled.
8. The protection system of claim 1 in which the net includes low breaking strength intersecting lines.
9. The protection system of claim 1 in which a hard point includes a multi-sided body with a cavity therein behind the front face thereof and a plug received in the cavity locking a net node in the cavity and securing the hard point to the net in a pivotable fashion.
10. The protection system of claim 9 in which the hard point body has eight sides.
11. The protection system of claim 10 in which four sides include slots receiving net lines therein.
12. The protection system of claim 9 in which the plug is tapered.
13. The protection system of claim 9 in which the hard point body includes a lip extending into the cavity locking the plug therein.
14. The protection system of claim 9 in which the plug is press fit into the cavity.
15. The protection system of claim 1 in which the net has a mesh between 110 and 190 mm.
16. The protection system of claim 13 in which the plug includes a ledge engaged by the lip.
17. The protection system of claim 1 in which the hard point has a length to diameter ratio of approximately 1.
18. The protection system of claim 1 in which the net lines have a breaking strength such that a line will break upon impact of an ordinance fuse with the line for a predetermined percentage of ordinance fuse impacts.
19. The protection system of claim 18 in which the predetermined percent is 100 percent.
20. The protection system of claim 18 in which the predetermined percentage is between 80 and 100%.
21. The protection system of claim 1 in which the net material has a breaking strength of between 100 lbs and 1.500 lbs.
22. The protection system of claim 1 in which the hard points include steel.
23. The protection system of claim 1 in which each hard point weighs between 10 and 80 grams.
24. The protection system of claim 1 in which the net line has a diameter of between 1.7 and 1.9 mm.
25. A protection system comprising:
a flexible subsystem including spaced hard points; and
a frame supporting the flexible subsystem and positioning it in a spaced relationship with respect to a vehicle or structure, the frame including:
tubular members, and
select adjacent tubular members connected via a flexure configured to prevent damage to the frame when impacted.
26. The protection subsystem of claim 25 in which the flexible subsystem includes a net with lines defining nodes for the hard points.
27. A protection system comprising:
an RPG protection subsystem; and
a frame supporting the RPG protection subsystem and positioning it in a spaced relationship with respect to a vehicle or structure, the frame including:
tubular members, and
select adjacent tubular members connected via a flexure configured to prevent damage to the frame when impacted.
28. The protection system of claim 27 in which the RPG protection subsystem includes a net with lines connected at nodes.
29. The protection system of claim 28 in which the RPG protection subsystem further includes hard points attached to at least select nodes.