Patent US3711040A successfully refreshed from Google Patents.
US3711040A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Outboard missile control surface and actuator
Assignee: United States Department of the Navy
•
Filing: 1971-04-20
•
Granted: 1973-01-16
•
Expires: 1991-04-20
Abstract
Abstract The present invention comprises a control surface actuation system capable of disposition within a restricted volume. The present actuation system and control surface is disposed outboard of the missile due to space limitations imposed by an unusually large nozzle diameter. The system comprises four independent electro-hydraulic actuators of the push-push configuration for driving four aerodynamic control surfaces arranged in cruciform and disposed at the aft end of the missile. The actuation system arrangement allows passage of the missile through existing launchers having typical volume restraints.
Inventors
- 👤 A Carver
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 15:15
CPC Classifications
F; F42; F42B; F42B10/00; F42B10/60; F42B10/62; F42B10/64
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
147 words
An externally mounted missile control system comprising: a housing formed as an extension of a dorsal fin of a missile and adapted to be secured on the external surface of the missile; a series connected hydraulic actuation system mounted in said housing in a line parallel to the axis of said missile including a dual electric motor and hydraulic pump combination; a folding control surface mounted on said housing and supported by a rotatable bearing; means for rotating said control surface connected to said hydraulic actuation system; said rotating means comprising two hydraulic pistons and cylinders connected to opposite sides of said control surface by shafts; said pistons, cylinders and shafts arranged perpendicular to the axis of said control surface bearing and said pistons and cylinders being angled with respect to each other to minimize space requirements whereby said control surface is operated in a push-push arrangement.
Claim 2
Dependent Claim
147 words
An externally mounted missile control system comprising: a housing formed as an extension of a dorsal fin of a missile and adapted to be secured on the external surface of the missile; a series connected hydraulic actuation system mounted in said housing in a line parallel to the axis of said missile including a dual electric motor and hydraulic pump combination; a folding control surface mounted on said housing and supported by a rotatable bearing; means for rotating said control surface connected to said hydraulic actuation system; said rotating means comprising two hydraulic pistons and cylinders connected to opposite sides of said control surface by shafts; said pistons, cylinders and shafts arranged perpendicular to the axis of said control surface bearing and said pistons and cylinders being angled with respect to each other to minimize space requirements whereby said control surface is operated in a push-push arrangement.
Claim 3
Dependent Claim
33 words
The apparatus of claim 1 wherein the hydraulic piston shafts are connected at points on said control surface bearing to rotate said control surface through a range of + or - 40* .
Claim 4
Dependent Claim
30 words
The apparatus of claim 1 wherein said rotatable bearing has one end connected to said control surface and the other end has a disc portion thereon connected to said shafts.
Claim 5
Dependent Claim
21 words
The apparatus of claim 3 wherein said pistons and cylinders are arranged at an acute angle with respect to each other.
Claim 6
Dependent Claim
49 words
The apparatus of claim 1 wherein said control surface is in a first folded position during launching of said missile and in a second flight position after launch of said missile and erection means within said housing for moving said control surface from the first to the second position.
Claim 7
Dependent Claim
18 words
The apparatus of claim 1 wherein the cEntral axis of the hydraulic cylinders lie in the same plane.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-01-16 | 1976-07-17 | 1977-01-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-01-16 | 1980-07-17 | 1981-01-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-01-16 | 1984-07-17 | 1985-01-16 | $7700.00 | Window Closed / Lapsed |