1.-80. (canceled)
81. A weapon, comprising:
a warhead having an outer casing that forms an internal chamber;
a dart within said internal chamber and configured to exit said internal chamber via an opening therein, said dart being directly secured to an aft end of said warhead with a restraining device about an aft end of said dart and further restrained within said warhead with a restraining clamp about an outer side of said dart against a pressure saddle on an inner side of said dart.
82. The weapon as recited in claim 81 wherein said restraining clamp and said pressure saddle are located on a central portion of said dart.
83. The weapon as recited in claim 81 wherein said dart comprises a conical nose and said pressure saddle is located on a sloping inner side of said conical nose.
84. The weapon as recited in claim 81 further comprising a friction adjustment bolt configured to create friction on said dart.
85. The weapon as recited in claim 81 further comprising a clamp adjustment bolt configured to lock said restraining clamp about said outer side of said dart against said pressure saddle on said inner side of said dart.
86. The weapon as recited in claim 81 further comprising a plurality of darts within said internal chamber and configured to exit said internal chamber via said opening therein, said plurality of darts being secured to said aft end of said warhead with said restraining device about an aft end said plurality of darts and further restrained within said warhead with said restraining clamp about an outer side of said plurality of darts against said pressure saddle on in inner side of said plurality of darts.
87. The weapon as recited in claim 86 wherein ones of said plurality of darts are a different size.
88. The weapon as recited in claim 81 wherein said warhead includes a fore end, said dart being configured to exit said internal chamber via said opening in said fore end.
89. The weapon as recited in claim 81 further comprising a fuze well.
90. The weapon as recited in claim 81 wherein said dart is formed with a non-explosive material.
91. A weapon system, comprising:
a delivery vehicle;
a weapon, including:
a warhead having an outer casing that forms an internal chamber; and
a dart within said internal chamber and configured to exit said internal chamber via an opening therein, said dart being directly secured to an aft end of said warhead with a restraining device about an aft end of said dart and further restrained within said warhead with a restraining clamp about an outer side of said dart against a pressure saddle on an inner side of said dart; and
a guidance system configured to direct said weapon to a target.
92. A weapon system as recited in claim 91 wherein said restraining clamp and said pressure saddle are located on a central portion of said dart.
93. The weapon system as recited in claim 91 wherein said dart comprises a conical nose and said pressure saddle is located on a sloping inner side of said conical nose.
94. The weapon system as recited in claim 91 wherein said weapon further includes a friction adjustment bolt configured to create friction on said dart.
95. The weapon system as recited in claim 91 wherein said weapon further includes a clamp adjustment bolt configured to lock said restraining clamp about said outer side of said dart against said pressure saddle on said inner side of said dart.
96. The weapon system as recited in claim 91 wherein said weapon further includes a plurality of darts within said internal chamber and configured to exit said internal chamber via said opening therein, said plurality of darts being secured to aft said end of said warhead with said restraining device about an aft end of said plurality of darts and further restrained within said warhead with said restraining clamp about an outer side of said plurality of darts against said pressure saddle on in inner side of said plurality of darts.
97. The weapon system as recited in claim 96 wherein ones of said plurality of darts are a different size.
98. The weapon system as recited in claim 91 wherein said warhead includes a fore end, said dart being configured to exit said internal chamber via said opening in said fore end.
99. The weapon system as recited in claim 91 further comprising a fuze well.
100. The weapon system as recited in claim 91 wherein said dart is formed with a non-explosive material.
The claims below are in addition to those above.
All refrences to claim(s) which appear below refer to the numbering after this setence.
1. A reaction system for preparation of a viscoelastic polyurethane foam comprising:
(a) a polyisocyanate component;
(b) an isocyanate reactive component comprising:
(i) from 45 to 65% by weight of the isocyanate reactive component of one or more propylene oxide rich (PO-rich) polyols having a combined number average equivalent weight from 210 to 510, a functionality of 2.4 to 4 and a propylene oxide content of at least 70% by weight;
(ii) from 20 to 30% by weight of the isocyanate reactive component of one or more ethylene oxide (EO-rich) polyols having a combined number average equivalent weight from 200 to 500, a functionality of from 2 to 4 and an ethylene oxide content of at least 70 wt % by weight;
(iii) from 10 to 25% by weight of the isocyanate reactive component of one or more ethylene oxide-alkylene oxide monols having a combined number average equivalent weight from 300 to 800 and an ethylene oxide content of 40 to 60 wt %, wherein the alkylene oxide is propylene oxide, butylene oxide, or combinations thereof; and
(iv) from 0.5 to 15% by weight of the isocyanate reactive component of one or more PO-rich polyols having a functionality of 1 to 4, a combined number average equivalent weight of 2,000 to 6,000 and a propylene oxide content of at least 70% by weight;
(c) water; and
(d) a catalyst component.
2. The reaction system of claim 1, wherein the isocyanate reactive component further comprises:
(v) from 1 to 15% by weight of the isocyanate reactive component of one or more butylene oxide rich (BO-rich) polyethers having a number average equivalent weight of 2,000 or more, a functionality of 1 to 3 and a butylene oxide content of at least 70% by weight.
3. The reaction system of claim 1, wherein the one or more PO-rich polyols (i) comprises:
(b)(1)(a) from 30 to 55% by weight of the isocyanate reactive component of one or more low equivalent weight PO-rich polyols having a combined number average equivalent weight from 200 to 500; and
(b)(1)(b) from 5 to 20% by weight of the isocyanate reactive component of one or more high equivalent weight PO-rich polyols having a combined number average equivalent weight from 800 to 2,000.
4. The reaction system of claim 1, wherein the polyisocyanate component is methylene diphenyl diisocyanate (MDI).
5. The reaction system of claim 1, the one or more ethylene oxide-alkylene oxide monols of (iii) are one or more ethylene oxide-propylene oxide polyethers.
6. The reaction system of claim 5, wherein the one or more ethylene oxide-propylene oxide monols have a combined number average equivalent weight from 400 to 600.
7. The reaction system of claim 6, wherein the one or more ethylene oxide-propylene oxide monols have an ethylene oxide concentration that is between 40-60% by weight of the total mass of the monol.
8. A viscoelastic polyurethane foam produced using the reaction system of claim 1, having an air flow greater than 1.2 Literssecond and a compression set @ 75% of 2% or less.
9. A method of preparing a viscoelastic foam, comprising;
forming reaction components, comprising:
a polyisocyanate component;
an isocyanate reactive component comprising:
(i) one or more propylene oxide rich (PO-rich) polyols having a combined number average equivalent weight from 210 to 510, a functionality of 2.4 to 4 and a propylene oxide content of at least 70% by weight, wherein the one of more PO-rich polyols comprise from 45-65% by weight of the isocyanate reactive component;
(ii) one or more ethylene oxide (EO-rich) polyols having a combined number average equivalent weight from 200 to 500, a functionality of from 2 to 4 and an ethylene oxide content of at least 70% by weight, wherein the one of more EO-rich polyols comprise from 20-30% by weight of the isocyanate reactive component;
(iii) one or more ethylene oxide-alkylene oxide monols having a combined number average equivalent weight from 300 to 800 and an ethylene oxide content of 30 to 70 wt %, wherein the one or more ethylene oxide-alkylene oxide monols comprise from 10-25% by weight of the isocyanate reactive component and the alkylene oxide is propylene oxide, butylene oxide, or combinations thereof; and
(iv) one or more PO-rich polyols having a functionality of 1 to 4 and a combined number average equivalent weight of 2,000 to 6,000, a propylene oxide content of at least 70% by weight, wherein (iv) one or more PO-rich polyols comprise from 0.5 to 15% by weight of the isocyanate reactive component;
water; and
a catalyst component; and
combining the reaction components at conditions sufficient to form a viscoelastic polyurethane foam.
10. The method of claim 9, wherein the isocyanate reactive component further comprises:
one or more butylene oxide (BO) rich polyethers having a combined number average equivalent weight of 2,000 or more, a functionality of 1 to 3 and a butylene oxide content of at least 70 wt %, wherein the one or more BO-rich polyols comprise from 1-15% by weight of the isocyanate reactive component.
11. The method of claim 9, wherein the one or more PO-rich polyols having a combined number average equivalent weight from 210 to 510 comprises:
(b)(1)(a) from 30 to 55% by weight of the isocyanate reactive component of one or more low equivalent weight PO-rich polyols having a combined number average equivalent weight from 200 to 500; and
(b)(1)(b) from 5 to 20% by weight of the isocyanate reactive component of one or more high equivalent weight PO-rich polyols having a combined number average equivalent weight from 800 to 2,000.
12. The method of claim 9, wherein the polyisocyanate component is methylene diphenyl diisocyanate (MDI).
13. The method of claim 9, wherein the one or more ethylene oxide-alkylene oxide monols are (iii) is one or more ethylene oxide-propylene oxide polyethers.
14. The method of claim 13, wherein the one or more ethylene oxide-propylene oxide polyethers have a combined number average equivalent weight from 400 to 600.
15. A viscoelastic polyurethane foam produced using the method of claim 9, having an air flow from 1.2 Literssecond to 3.5 Literssecond and a compression set @ 75% of 2% or less.