IPC분류정보
국가/구분 |
United States(US) Patent
등록
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국제특허분류(IPC7판) |
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출원번호 |
US-0924035
(2010-09-01)
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등록번호 |
US-8933383
(2015-01-13)
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발명자
/ 주소 |
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출원인 / 주소 |
- The United States of America as represented by the Secretary of the Army
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대리인 / 주소 |
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인용정보 |
피인용 횟수 :
0 인용 특허 :
24 |
초록
▼
A system and method of trajectory correction includes a voice coil coupled to the projectile and providing a linear force; a linkage assembly coupled to the voice coil and comprising: a linkage shaft; a slot coupled to the linkage shaft; and a pin loosely coupled to the slot to form a first pivot po
A system and method of trajectory correction includes a voice coil coupled to the projectile and providing a linear force; a linkage assembly coupled to the voice coil and comprising: a linkage shaft; a slot coupled to the linkage shaft; and a pin loosely coupled to the slot to form a first pivot point, wherein the linkage assembly converts the linear force to a torque force through the first pivot point; and a canard assembly coupled to the linkage assembly and including a canard shaft coupled to the linkage shaft to form a second pivot point; and at least one canard coupled to the canard shaft, wherein the torque force is transmitted to canard shaft by the linkage shaft, and wherein the canard shaft transmits the torque force to the canard to correct the trajectory of the projectile.
대표청구항
▼
1. A system for correcting range and deflection errors inherent in the trajectory of an unguided, fin-stabilized ballistic projectile, said system comprising: an unguided, fin-stabilized ballistic projectile,a trajectory control system connected to the projectile and comprising: a voice coil providi
1. A system for correcting range and deflection errors inherent in the trajectory of an unguided, fin-stabilized ballistic projectile, said system comprising: an unguided, fin-stabilized ballistic projectile,a trajectory control system connected to the projectile and comprising: a voice coil providing a linear force;a linkage assembly coupled to said voice coil, said linkage assembly comprising: a linkage shaft,a slot coupled to said linkage shaft, anda pin loosely coupled to said slot to form a first pivot point,wherein said linkage assembly converts said linear force to a torque force through said first pivot point; anda canard assembly coupled to said linkage assembly, said canard assembly comprising: a canard shaft coupled to said linkage shaft to form a second pivot point, andone canard coupled to each end of said canard shaft,wherein said torque force is transmitted to the canard shaft by said linkage shaft, and wherein said canard shaft transmits said torque force to each of said canards to change the deflection angle of said canards in unison and develop aerodynamic lift and a rotational moment, thus, correcting range and deflection errors in said trajectory,wherein said canard assembly further comprises: a plurality of elastically deformable bearing blocks coupled to said canard shaft, anda plurality of support blocks proximate to said plurality of bearing blocks thereby creating a clearance gap between said plurality of bearing blocks and said plurality of support blocks,wherein said plurality of bearing blocks deform under high acceleration to bridge said clearance gap between said plurality of bearing blocks and said plurality of support blocks, andwherein said canard shaft is supported by said support blocks when the clearance gap is eliminated during said deformation. 2. The system of claim 1, wherein said unguided, fin-stabilized ballistic projectile comprises one or more voice coil supports that support said voice coil in an axial direction. 3. The system of claim 1, wherein said linkage assembly comprises: a voice coil shaft comprising: a first end, anda second end,wherein said voice coil shaft is coupled to said voice coil to form a third pivot point, andwherein said voice coil shaft is coupled to said voice coil at said first end and coupled to said linkage shaft at said second end using said pin and said slot. 4. The system of claim 1, wherein said linkage assembly comprises: a flexing linkage member comprising: a first end, anda second end,wherein said flexing linkage member is coupled to said voice coil at said first end and coupled to said linkage shaft at said second end using said pin and said slot. 5. The system of claim 1, wherein said unguided, fin-stabilized ballistic projectile is configured to be launched from a gun. 6. The system of claim 1, wherein said voice coil rotates said canards bi-directionally and continuously controls the deflection angle of said canards during the flight of the projectile. 7. An apparatus configured to be connected to an unguided, fin-stabilized ballistic projectile for correcting range and deflection errors inherent in the trajectory of said projectile comprising: a voice coil providing a linear force;a linkage assembly coupled to said voice coil, said linkage assembly comprising: a linkage shaft,a slot coupled to said linkage shaft, anda pin loosely coupled to said slot to form a first pivot point,wherein said linkage assembly converts said linear force to a torque force through said first pivot point; anda canard assembly coupled to said linkage assembly, said canard assembly comprising: a canard shaft coupled to said linkage shaft to form a second pivot point, andat least one canard coupled to said canard shaft,wherein said torque force is transmitted to the canard shaft by said linkage shaft, and wherein said canard shaft transmits said torque force to said to at least one canard to change the deflection angle of said at least one canard to develop aerodynamic lift and a rotational moment, thereby correcting range and deflection errors in said trajectory of said projectile during flight,wherein said canard assembly further comprises: a plurality of elastically deformable bearing blocks coupled to said canard shaft, anda plurality of support blocks proximate to said plurality of bearing blocks thereby creating a clearance gap between said plurality of bearing blocks and said plurality of support blocks,wherein said plurality of bearing blocks deform under high acceleration to bridge said clearance gap between said plurality of bearing blocks and said plurality of support blocks, andwherein said canard shaft is supported by said support blocks when the clearance gap is eliminated during said deformation. 8. The apparatus of claim 7, wherein said linkage assembly comprises: a voice coil shaft comprising: a first end, anda second end,wherein said voice coil shaft is coupled to said voice coil to form a third pivot point, andwherein said voice coil shaft is coupled to said voice coil at said first end and coupled to said linkage shaft at said second end via said pin and said slot. 9. The apparatus of claim 7, wherein said linkage assembly comprises: a flexing linkage member comprising: a first end, anda second end,wherein said flexing linkage member is coupled to said voice coil at said first end and said linkage shaft at said second end via said pin and said slot. 10. The apparatus of claim 7, wherein said fin-stabilized ballistic projectile is configured to be launched from a gun. 11. A method of correcting range and deflection errors inherent in an unguided, fin-stabilized ballistic projectile, said method comprising: providing an unguided, fin-stabilized ballistic projectile;providing and then connecting a trajectory control system to the projectile, wherein the system comprises: a voice coil providing a linear force;a linkage assembly coupled to said voice coil, said linkage assembly comprising: a linkage shaft,a slot coupled to said linkage shaft, anda pin loosely coupled to said slot to form a first pivot point; anda canard assembly coupled to said linkage assembly, said canard assembly comprising: a canard shaft coupled to said linkage shaft to form a second pivot point,one canard coupled to each end of said canard shaft,a plurality of elastically deformable bearing blocks coupled to said canard shaft, anda plurality of support blocks proximate to said plurality of bearing blocks thereby creating a clearance gap between said plurality of bearing blocks and said plurality of support blocks,wherein said plurality of bearing blocks deform under high acceleration to bridge said clearance gap between said plurality of bearing blocks and said plurality of support blocks, andwherein said canard shaft is supported by said support blocks when the clearance gap is eliminated during said deformation;launching the projectile with connected trajectory control system from a gun;actuating the voice coil to generate a linear force;converting said linear force to a torque force using the linkage assembly coupled to said voice coil;transmitting said torque force to the canard assembly using the second pivot point;wherein said canard shaft transmits said torque force to said canards to correct range and deflection errors in said trajectory of said projectile during flight.
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