Patent US3997899A successfully refreshed from Google Patents.
US3997899A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Low radar cross-section re-entry vehicle
Assignee: Old Carco LLC
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Filing: 1961-03-20
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Granted: 1976-12-14
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Expires: 1981-03-20
Abstract
Abstract 1. A low radar cross-section re-entry vehicle comprising: a tubular metallic cannister enclosing all instrumentation and payload for said vehicle, said cannister having a diameter of approximately 10 inches and an overall length of approximately 65 inches with a conical portion having an included angle of approximately 26° closing the forward end thereof and a closure at the rear end of said cannister; and an aerodynamic fiberglass superstructure conical in form completely enclosing said cannister with the forward end of said cannister nested in the forward end of said superstructure, said superstructure having an included angle of approximately 26°, a length of approximately 67 inches and a base diameter of approximately 30 inches; said vehicle having its center of gravity closer to the pointed forward end thereof than is the center of pressure thereof.
Inventors
- 👤 Bernard Rolsma
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 16:13
CPC Classifications
H; H01; H01Q; H01Q17/00; H01Q17/001
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
133 words
A low radar cross-section re-entry vehicle comprising: a tubular metallic cannister enclosing all instrumentation and payload for said vehicle, said cannister having a diameter of approximately 10 inches and an overall length of approximately 65 inches with a conical portion having an included angle of approximately 26° closing the forward end thereof and a closure at the rear end of said cannister; and an aerodynamic fiberglass superstructure conical in form completely enclosing said cannister with the forward end of said cannister nested in the forward end of said superstructure, said superstructure having an included angle of approximately 26°, a length of approximately 67 inches and a base diameter of approximately 30 inches; said vehicle having its center of gravity closer to the pointed forward end thereof than is the center of pressure thereof.
Claim 2
Dependent Claim
133 words
A low radar cross-section re-entry vehicle comprising: a tubular metallic cannister enclosing all instrumentation and payload for said vehicle, said cannister having a diameter of approximately 10 inches and an overall length of approximately 65 inches with a conical portion having an included angle of approximately 26° closing the forward end thereof and a closure at the rear end of said cannister; and an aerodynamic fiberglass superstructure conical in form completely enclosing said cannister with the forward end of said cannister nested in the forward end of said superstructure, said superstructure having an included angle of approximately 26°, a length of approximately 67 inches and a base diameter of approximately 30 inches; said vehicle having its center of gravity closer to the pointed forward end thereof than is the center of pressure thereof.
Claim 3
Dependent Claim
137 words
A low radar cross-section re-entry vehicle comprising: a tubular metallic cannister enclosing all instrumentation and payload for said vehicle, said cannister having a conical portion with an included angle of approximately 26° closing the forward end thereof, a closure member at the rear end thereof, and an overall length approximately six times its diameter; and an aerodynamic superstructure conical in form completely enclosing said cannister and composed of material having an inherent radar cross-section at least as low as that of said cannister, the forward end of said cannister being nested in the forward end of said superstructure, said superstructure having an included angle of approximately 26° and a length of approximately twice its base diameter; said vehicle having its center of gravity closer to the pointed forward end thereof than is the center of pressure thereof.
Claim 4
Dependent Claim
137 words
A low radar cross-section re-entry vehicle comprising: a tubular metallic cannister enclosing all instrumentation and payload for said vehicle, said cannister having a conical portion with an included angle of approximately 26° closing the forward end thereof, a closure member at the rear end thereof, and an overall length approximately six times its diameter; and an aerodynamic superstructure conical in form completely enclosing said cannister and composed of material having an inherent radar cross-section at least as low as that of said cannister, the forward end of said cannister being nested in the forward end of said superstructure, said superstructure having an included angle of approximately 26° and a length of approximately twice its base diameter; said vehicle having its center of gravity closer to the pointed forward end thereof than is the center of pressure thereof.
References Cited (Backward Citations)
US2853946A
Cited
US2937597A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-12-14 | 1980-06-14 | 1980-12-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-12-14 | 1984-06-14 | 1984-12-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-12-14 | 1988-06-14 | 1988-12-14 | $7700.00 | Window Closed / Lapsed |