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US4374577A Expired / Lapsed US ⏱️ 0.0 years remaining

Adapter assembly for flat trajectory flight

Assignee: United States Department of the Navy
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Filing: 1976-01-14
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Granted: 1983-02-22
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Expires: 1996-01-14
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Abstract

Abstract An aerodynamic lift-generating adapter assembly secures to the nose of an guided projectile to provide a capability for flat-trajectory flight. The adapter assembly comprises a rotatably-supported, roll-stabilized lift-generating section coupled to an actuator section containing inertia means to initiate gyroscope rotor spinning. The control gyroscope is directly linked to the lift-generating device to maintain fixed orientation of the lift.

Inventors

  • 👤 Michael A. Brown
  • 👤 Chris A. Kalivretenos

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-08 16:58
CPC Classifications
F; F42; F42B; F42B10/00; F42B10/02; F42B15/00; F42B15/01

Claims Analysis

Total Claims: 22
Claim 1
Independent Claim 94 words
An adapter assembly attachable to the nose portion of an unguided projectile to provide the projectile with a substantially flat-trajectory flight capability comprising: an aerodynamic lift-generating section including both a lift-producing device and a separate stabilizing mechanism directly coupled to said device; a separate and distinct actuator housing attachable to the nose portion of a projectile; means for rotationally coupling said lift-generating section to said actuator housing; and inertia means within said actuator housing to initiate operation of said stabilizing mechanism, said adapter assembly producing a stabilized, vertically-oriented lift to counter the projectile weight.
Claim 2
Dependent Claim 94 words
An adapter assembly attachable to the nose portion of an unguided projectile to provide the projectile with a substantially flat-trajectory flight capability comprising: an aerodynamic lift-generating section including both a lift-producing device and a separate stabilizing mechanism directly coupled to said device; a separate and distinct actuator housing attachable to the nose portion of a projectile; means for rotationally coupling said lift-generating section to said actuator housing; and inertia means within said actuator housing to initiate operation of said stabilizing mechanism, said adapter assembly producing a stabilized, vertically-oriented lift to counter the projectile weight.
Claim 3
Dependent Claim 13 words
The adapter assembly of claim 1 wherein said stabilizing mechanism comprises a gyroscope.
Claim 4
Dependent Claim 19 words
The adapter assembly of claim 2 further comprising a support bracket directly coupling said gyroscope to said lift-producing device.
Claim 5
Dependent Claim 41 words
The adapter assembly of claim 3 wherein said rotational coupling means comprises a longitudinal shaft attached to said bracket and rotationally and longitudinally supported by said actuator housing to permit free rotation of said lift-generating section relative to said actuator housing.
Claim 6
Dependent Claim 54 words
The adapter assembly of claim 4 wherein said inertia means comprise: a mass slidably positioned within said actuator housing; and flexible connecting means joining said mass to the rotor of said gyroscope, whereby said mass responds to acceleration forces to exert a pull on said flexible connecting means to initiate spinning of the rotor.
Claim 7
Dependent Claim 56 words
The adapter assembly of claim 4 further comprising: a cylinder within said actuator housing to receive said longitudinal shaft, said shaft longitudinally movable within said cylinder; bearings on said shaft to permit free rotation of said shaft within said cylinder; and stop means in said cylinder to prevent complete withdrawal of said shaft from said cylinder.
Claim 8
Dependent Claim 33 words
The adapter assembly of claim 6 further including a spring within said cylinder coacting with said shaft to bias the shaft outwardly from said cylinder to the limit determined by said stop means.
Claim 9
Dependent Claim 38 words
The adapter assembly of claim 5 wherein said flexible connecting means are wound upon pulley extensions on the rotor of said gyroscope, the winding of said connecting means drawing said actuator housing and said lift-generating section into abutment.
Claim 10
Dependent Claim 28 words
The adapter assembly of claim 8 further comprising a plunger apparatus coacting with said actuator housing to prevent rotation of said lift-generating section and to cage said gyroscope.
Claim 11
Dependent Claim 90 words
The adapter assembly of claim 9 wherein said plunger apparatus comprises: an elongated pin slidably received within a longitudinal chamber in said bracket, one end of said pin coacting with said gyroscope to prevent rotation of the gimbal and the opposite end extensible from an aft surface of said bracket; and a plunger spring biasing said pin toward an aft surface of said bracket, said pin being pressed into cooperative engagement with said gyroscope to prevent gimbal rotation when said lift-generating section and said actuator housing are in abutting relationship.
Claim 12
Dependent Claim 27 words
The adapter assembly of claim 10 further comprising a recess on a forward surface of said adapter housing to receive the extending end of said elongated pin.
Claim 13
Dependent Claim 65 words
The adapter assembly of claim 7 wherein said inertia means comprise: a mass slidably positioned within said actuator housing; and flexible connecting means joining said mass to the rotor of said gyroscope, the connecting means being removably wound around pulley extensions on the rotor, whereby said mass responds to acceleration forces to remove said connecting means from the rotor to initiate spinning of the rotor.
Claim 14
Dependent Claim 19 words
The adapter assembly of claim 5 wherein said lift-producing device comprises a cylindrical member having a slanted forward surface.
Claim 15
Dependent Claim 23 words
The adapter assembly of claim 13 further comprising a fairing structure for attaching said actuator housing to the nose portion of a projectile.
Claim 16
Dependent Claim 198 words
An aerodynamic lift-generating mechanism attachable to the forward portion of a projectile comprising: a gyroscopically roll-stabilized lifting section to produce a vertically-fixed lift vector including therein both a lift producing means and a stabilizing gyroscope; a separate and distinct actuator housing attachable to the projectile; a shaft attached at one end to said lifting section, the other end of said shaft being rotatably and rectilinearly receivable within said actuator housing to join said lifting section to said housing; resilient means within said housing cooperating with said shaft to bias the shaft outwardly of said housing and towards said lifting section; and slidable inertia means within said housing coupled to the rotor of said stabilizing gyroscope with flexible connecting means for initiating spinning of the gyroscope rotor; means for releasably drawing into abutment said lifting section and said actuator housing prior to launch of said projectile, whereupon launch of the projectile said lifting section and said actuator housing are released from abutment, said inertia means initiates operation of the gyroscope and said resilient means effects a spatial separation between said lifting section and said actuator housing to permit free rotation of the projectile relative to the roll-stabilized lifting section.
Claim 17
Dependent Claim 198 words
An aerodynamic lift-generating mechanism attachable to the forward portion of a projectile comprising: a gyroscopically roll-stabilized lifting section to produce a vertically-fixed lift vector including therein both a lift producing means and a stabilizing gyroscope; a separate and distinct actuator housing attachable to the projectile; a shaft attached at one end to said lifting section, the other end of said shaft being rotatably and rectilinearly receivable within said actuator housing to join said lifting section to said housing; resilient means within said housing cooperating with said shaft to bias the shaft outwardly of said housing and towards said lifting section; and slidable inertia means within said housing coupled to the rotor of said stabilizing gyroscope with flexible connecting means for initiating spinning of the gyroscope rotor; means for releasably drawing into abutment said lifting section and said actuator housing prior to launch of said projectile, whereupon launch of the projectile said lifting section and said actuator housing are released from abutment, said inertia means initiates operation of the gyroscope and said resilient means effects a spatial separation between said lifting section and said actuator housing to permit free rotation of the projectile relative to the roll-stabilized lifting section.
Claim 18
Dependent Claim 35 words
The mechanism of claim 15 whereupon said resilient means comprises a spring adjacent the free end of said shaft, said spring being compressed when the lifting section and the actuator housing are in abutting relationship.
Claim 19
Dependent Claim 25 words
The mechanism of claim 16 further comprising locking means to rotationally position the lifting section relative to the housing and to cage the stabilizing gyroscope.
Claim 20
Dependent Claim 130 words
The mechanism of claim 17 wherein said locking means comprises: a rod slidably positioned within said lifting section, the rod having a blunt end extendable from said lifting section and a pointed end coacting with the stabilizing gyroscope to prevent rotation of the gyroscope gimbal; a rod spring biasing the blunt end of said rod externally of said lifting section; and a receiving recess on a forward aft surface of said actuator housing collinearly positionable with the blunt end of said rod, whereby when said lifting section and said actuator housing are in abutting relationship the blunt end of said rod engages said recess to angularly position said lifting section and said housing, and the pointed end of said rod engages the gyroscope gimbal to prevent rotation of the gimbal.
Claim 21
Dependent Claim 18 words
The mechanism of claim 18 wherein said inertia means comprises a mass slidably positioned within said actuator housing.
Claim 22
Dependent Claim 60 words
The mechanism of claim 19 wherein said flexible connecting means comprises a pair of cords, one end of each of said cords secured to said mass and the other end of each of said cords being removably wound about the gyroscope rotor, the winding of said cords about the rotor drawing into abutment said lifting section and said actuator housing.

References Cited (Backward Citations)

US2822755A Cited
US3067682A Cited
US3195462A Cited
US3273406A Cited
US3180223A Cited
US3540679A Cited
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USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1986-02-21 1986-08-23 1987-02-22 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1990-02-21 1990-08-23 1991-02-22 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1994-02-21 1994-08-23 1995-02-22 $7700.00 Window Closed / Lapsed

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