Patent US3745928A successfully refreshed from Google Patents.
US3745928A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rain resistant, high strength, ablative nose cap for hypersonic missiles
Assignee: United States Department of the Army
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Filing: 1971-12-03
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Granted: 1973-07-17
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Expires: 1991-12-03
Abstract
Abstract An ablative nose cap for slender type missiles in which the nose cap has a base member for securing the nose cap to the missile proper, an insulation member at the head end of the base member, a back-up nose tip mounted relative to the insulation member, a unidirectional fiber rod in front of the back-up tip and an outer wrap of reinforced phenolic about the outer surfaces of the several members to provide an outer ablative cover. The nose cap is designed for hypersonic speeds and for maintaining its structural and thermal integrity after particle impact encounters with rain, ice or dust at hypersonic velocities.
Inventors
- 👤 L Kinnaird
- 👤 S Moorhead
- 👤 J Casadevall
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 09:25
CPC Classifications
F; F42; F42B; F42B10/00; F42B10/32; F42B10/38; F42B10/42; F42B10/46
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
108 words
A nose cap comprising a body member that has a generally frustoconical outer surface and a forward end with an opening therein, a heat insulating member mounted at the forward end of said body member and in said opening of said body member, said heat insulating member having an opening therethrough, a refractory metal back-up tip secured to and mounted in said opening of said heat insulating member, a center reinforcement rod mounted forward of said back-up tip, and ablative fiber reinforced plastic about the outer surface of said body member, said heat insulating member, said back-up tip and said center reinforcement rod to form said nose cap.
Claim 2
Dependent Claim
108 words
A nose cap comprising a body member that has a generally frustoconical outer surface and a forward end with an opening therein, a heat insulating member mounted at the forward end of said body member and in said opening of said body member, said heat insulating member having an opening therethrough, a refractory metal back-up tip secured to and mounted in said opening of said heat insulating member, a center reinforcement rod mounted forward of said back-up tip, and ablative fiber reinforced plastic about the outer surface of said body member, said heat insulating member, said back-up tip and said center reinforcement rod to form said nose cap.
Claim 3
Dependent Claim
30 words
A nose cap as set forth in claim 1, wherein said heat insulating member is made from materials selected from the group consisting of silica phenolic, quartz phenolic and zirconium.
Claim 4
Dependent Claim
34 words
A nose cap as set forth in claim 2, wherein said back-up tip is made from refractory metal selected from the group consisting of tungsten, tungsten moly, tungsten copper, tungsten silver, and tungsten tantalum.
Claim 5
Dependent Claim
24 words
A nose cap as set forth in claim 3, wherein said back-up tip is made from the metal tungsten impregnated with 17 percent copper.
Claim 6
Dependent Claim
27 words
A nose cap as set forth in claim 4, wherein the fibers of said reinforcement rod are selected from the group consisting of quartz, silica, and glass.
Claim 7
Dependent Claim
30 words
A nose cap as set forth in claim 5, wherein said ablative fiber reinforcement plastic includes a first outer layer of quartz phenolic and an outermost layer of silica phenolic.
Claim 8
Dependent Claim
20 words
A nose cap as set forth in claim 6, wherein said heat insulating member is made from molded silica phenolic.
References Cited (Backward Citations)
US3026806A
Cited
US3536011A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-07-16 | 1977-01-15 | 1977-07-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-07-16 | 1981-01-15 | 1981-07-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-07-16 | 1985-01-15 | 1985-07-17 | $7700.00 | Window Closed / Lapsed |