Tandem warhead Number:7,143,698 from the United States Patent and Trademark Office (PTO) owispatent A method for attacking a target, the method including first, deploying a plurality of projectiles in the trajectory path of the target, and second, positioning a blast fragmentation warhead proximate the target and initiating the blast fragmentation warhead so that any portions of the target which survive the blast fragmentation warhead are destroyed by the projectiles.<H warhead, Tandem, Tandem, warhead, 7143698.html, Patent, pto, 7143698

Title: Tandem warhead

Abstract: A method for attacking a target, the method including first, deploying a plurality of projectiles in the trajectory path of the target, and second, positioning a blast fragmentation warhead proximate the target and initiating the blast fragmentation warhead so that any portions of the target which survive the blast fragmentation warhead are destroyed by the projectiles.

Patent Number: 7,143,698 Issued on 12/05/2006 to Lloyd

Inventors: Lloyd; Richard M. (Melrose, MA)
Assignee: Raytheon Company (Waltham, MA)

Appl. No.: 11/129,256

Filed: May 13, 2005

Related U.S. Patent Documents


Application Number	Filing Date	Patent Number	Issue Date
10301302	Nov., 2002	6931994
60406828	Aug., 2002

Current U.S. Class: 102/489 ; 102/496; 102/497

Current International Class: F42B 12/58 (20060101)

Field of Search: 102/489,491,492,496,497

References Cited [Referenced By]

U.S. Patent Documents


1198035	September 1916	Huntington
1229421	June 1917	Downs
1235076	July 1917	Stanton
1244046	October 1917	Ffrench
1300333	April 1919	Berry
1305967	June 1919	Hawks
2296980	September 1942	Carmichael
2308683	January 1943	Forbes
2322624	June 1943	Forbes
2337765	December 1943	Nahirney
2925965	February 1960	Pierce
2988994	June 1961	Fleischer, Jr. et al.
3332348	July 1967	Myers et al.
3565009	February 1971	Allred et al.
3656433	April 1972	Thrailkill et al.
3665009	May 1972	Dickinson, Jr.
3757694	September 1973	Talley et al.
3771455	November 1973	Haas
3796159	March 1974	Conger
3797359	March 1974	Mawhinney et al.
3818833	June 1974	Throner, Jr.
3846878	November 1974	Monson et al.
3851590	December 1974	LaCosta
3861314	January 1975	Barr
3877376	April 1975	Kupelian
3902424	September 1975	Dietsch et al.
3903804	September 1975	Luttrell et al.
3915092	October 1975	Monson et al.
3941059	March 1976	Cobb
3949674	April 1976	Talley
3954060	May 1976	Haag et al.
3977330	August 1976	Held
4026213	May 1977	Kempton
4036140	July 1977	Korr et al.
4089267	May 1978	Mescall et al.
4106410	August 1978	Borcher et al.
4147108	April 1979	Gore et al.
4172407	October 1979	Wentink
4210082	July 1980	Brothers
4211169	July 1980	Brothers
4231293	November 1980	Dahn et al.
4289073	September 1981	Romer et al.
4376901	March 1983	Pettibone et al.
4430941	February 1984	Raech, Jr. et al.
4455943	June 1984	Pinson
4497253	February 1985	Sabranski
4516501	May 1985	Held et al.
4524697	June 1985	Bocker et al.
4538519	September 1985	Witt et al.
4638737	January 1987	McIngvale
4655139	April 1987	Wilhelm
4658727	April 1987	Wilhelm et al.
4676167	June 1987	Huber, Jr. et al.
4745864	May 1988	Craddock
4770101	September 1988	Robertson et al.
4777882	October 1988	Dieval
4848239	July 1989	Wilhelm
4907512	March 1990	Arene
4922826	May 1990	Busch et al.
4957046	September 1990	Puttock
4995573	February 1991	Wallow
4996923	March 1991	Theising
5067411	November 1991	Ball
H1047	May 1992	Henderson et al.
H1048	May 1992	Wilson et al.
5182418	January 1993	Talley
5191169	March 1993	Hu
5223667	June 1993	Anderson
5229542	July 1993	Bryan et al.
5313890	May 1994	Cuadros
5370053	December 1994	Williams et al.
5524524	June 1996	Richards et al.
5535679	July 1996	Craddock
5542354	August 1996	Sigler
5544589	August 1996	Held
5565647	October 1996	Kerdraon et al.
5577431	November 1996	Kusters
5578783	November 1996	Brandeis
5583311	December 1996	Rieger
5622335	April 1997	Trouillot et al.
D380784	July 1997	Smith
5670735	September 1997	Ortmann et al.
5691502	November 1997	Craddock et al.
5796031	August 1998	Sigler
5823469	October 1998	Arkhangelsky et al.
5929370	July 1999	Brown et al.
5936191	August 1999	Bisping et al.
6035501	March 2000	Bisping et al.
6044765	April 2000	Regebro
6186070	February 2001	Fong et al.
6276277	August 2001	Schmacker
6279478	August 2001	Ringer et al.
6279482	August 2001	Smith et al.
6598534	July 2003	Lloyd et al.
6622632	September 2003	Spivak
6666145	December 2003	Nardone et al.
2003/0019386	January 2003	Lloyd et al.
2003/0029347	February 2003	Lloyd
2004/0011238	January 2004	Ronn et al.
2004/0055498	March 2004	Lloyd
2004/0055500	March 2004	Lloyd
2004/0129162	July 2004	Lloyd
2004/0200380	October 2004	Lloyd

Foreign Patent Documents


3327043	Feb., 1985	DE
3830527	Mar., 1990	DE
3934042	Apr., 1991	DE
270 401	Jun., 1988	EP
2678723	Jan., 1993	FR
550001	Dec., 1942	GB
2236581	Apr., 1991	GB
1-296100	Nov., 1989	JP
WO 97/27447	Jul., 1997	WO

Other References

Richard M. Lloyd, "Physics of Direct Hit and Near Miss Warhead Technology", vol. 194, Progress in Astronautics and Aeronautics, Copyright 2001 by the American Institute of Aeronautics and Astronautics, Inc., Chapter 3, pp. 99-197. cited by other .
Richard M. Lloyd, "Physics of Direct Hit and Near Miss Warhead Technology", vol. 194, Progress in Astronautics and Aeronautics, Copyright 2001 by the American Institute of Aeronautics and Astronautics, Inc., Chapter 6, pp. 311-406. cited by other .
U.S. Appl. No. 10/301,420, filed Nov. 21, 2002, Lloyd. cited by other .
U.S. Appl. No. 10/384,804, filed Mar. 10, 2003, Lloyd. cited by other .
U.S. Appl. No. 10/685,242, filed Oct. 14, 2003, Lloyd. cited by other .
U.S. Appl. No. 10/698,500, filed Oct. 31, 2003, Lloyd. cited by other .
U.S. Appl. No. 10/924,104, filed Aug. 23, 2004, Lloyd. cited by other .
U.S. Appl. No. 10/960,842, filed Oct. 7, 2004, Lloyd. cited by other .
U.S. Appl. No. 10/938,355, filed Sep. 10, 2004, Lloyd. cited by other.

Primary Examiner: Chambers; Troy
Attorney, Agent or Firm: Iandiorio & Teska

Parent Case Text

RELATED APPLICATIONS

This application is a divisional of prior application Ser. No. 10/301,302 filed Nov. 21, 2002, now U.S. Pat. No. 6,931,994 which claims benefit of and priority to provisional application Ser. No. 60/406,828 filed Aug. 29, 2002.

Claims

What is claimed is:

1. A method for attacking a target, the method comprising: first, deploying a plurality of projectiles in the trajectory path of the target; and second, positioning a blast fragmentation warhead proximate the target and initiating the blast fragmentation warhead so that any portions of the target which survive the blast fragmentation warhead are destroyed by the projectiles.

2. The method of claim 1 in which the projectiles deployed are cylindrical.

3. The method of claim 2 in which the projectiles deployed have at least one end which is pointed.

4. The method of claim 1 in which the projectiles have a non-cylindrical cross section.

5. The method of claim 4 in which the projectiles have a star-shaped cross section.

6. The method of claim 4 in which the non-cylindrical cross section projectiles have pointed end.

Description

FIELD OF THE INVENTION

This invention relates to a tandem warhead with kinetic energy rod warhead and blast fragmentation warhead sections.

BACKGROUND OF THE INVENTION

A blast fragmentation type warhead is designed to be carried by a missile and is used to destroy enemy missiles, aircraft, re-entry vehicles, and other targets. When the missile carrying the warhead reaches a position close to an enemy missile or other target, a pre-scored or pre-made band of metal on the warhead is detonated and pieces of metal are accelerated with high velocity and strike the target. See the textbook by the inventor hereof, R. Lloyd, "Conventional Warhead Systems Physics and Engineering Design," Progress in Astronautics and Aeronautics (AIAA) Book Series, Vol. 179, ISBM 1, 56347-255-4, 1998, incorporated herein by this reference, which provides additional details on conventional blast and pre-made fragmentation type warheads and other types of warheads.

The fragments of the blast fragmentation type warhead, however, are not always effective at destroying the target and biological bomblets and/or chemical submunition payloads can survive and still cause heavy casualties.

SUMMARY OF THE INVENTION

It is therefore an object of this invention to provide a more lethal warhead.

It is a further object of this invention to provide such a warhead has a better chance of destroying enemy targets including the biological bomblets and/or chemical submunition payloads they may carry.

This invention results from the realization that a more lethal warhead is effected by a tandem warhead design including both a kinetic energy rod section and a blast fragmentation section and a deployment sequence wherein the projectiles of the kinetic energy rod section are deployed in the trajectory path of the target and the carrier missile then continues towards the target deploying the blast fragmentation section proximate the target so that if any chemical or biological payloads remain intact after deployment of the blast fragmentation section, they are destroyed by the projectiles of the kinetic energy rod section.

This invention features a tandem warhead for destroying a target, the tandem warhead comprising a kinetic energy rod section including a plurality of lengthy individual projectiles, a blast fragmentation section deployable proximate the target, and means for deploying the projectiles of the kinetic energy rod section first in the trajectory path of the target and for deploying the blast fragmentation section second proximate the target.

In one example, the kinetic energy rod section includes an explosive charge about the projectiles, the explosive charge is divided into sections and there is a hull about the explosive charge also divided into sections. Typically, jettison explosive packs are disposed between each hull section and the projectiles. In one embodiment, the projectiles are cylindrical in cross section. Also, the projectiles may have at least one end which is pointed and/or may have a non-cylindrical cross section such as a star shaped cross section.

A method attacking a target in accordance with this invention includes first, deploying a plurality of projectiles in the trajectory path of the target, and second, positioning a blast fragmentation warhead proximate the target and initiating the blast fragmentation warhead so that any portions of the target which survive the blast fragmentation warhead are destroyed by the projectiles.

BRIEF DESCRIPTION OF THE DRAWINGS

Other objects, features and advantages will occur to those skilled in the art from the following description of a preferred embodiment and the accompanying drawings, in which:

FIGS. 1A 1E schematically depict the sequence of operation of the tandem warhead of the subject invention;

FIGS. 2 5 are schematic three-dimensional views showing the sequence of operation of one preferred kinetic energy rod section of the tandem warhead of this invention; and

FIGS. 6 8 are schematic three-dimensional views showing examples of different projectile shapes for the kinetic energy rod section of the tandem warhead of this invention.

DISCLOSURE OF THE PREFERRED EMBODIMENT

Tandem warhead 10, FIG. 1A carried by missile 12 and including kinetic energy rod section 14, blast fragmentation section 16, and guidance subsystem 18, is shown nearing target 20 having trajectory path 22. In FIG. 1B, guidance subsystem 18 serves as one means for initiating the deployment of kinetic energy rod section 14 deploying lengthy titanium, tantalum, or tungsten projectiles 24 in the trajectory path 22 of target 20 and then guidance subsystem 18 continues to guide missile 12 proximate target 20, FIG. 1C whereupon blast fragmentation section 16 is deployed and blast fragments 26 thereof strike target 20.

As shown in FIG. 1D, however, target 20 is not completely destroyed by blast fragmentation warhead 16 and submunitions 30 have survived the blast fragmentation engagement. But, projectiles 24 lie in the trajectory path of the submunitions and they are destroyed by projectiles 24 as shown in FIG. 1E.

The result is a much more lethal warhead combining the lethality of a blast fragmentation warhead and a kinetic energy rod warhead in a novel way. Blast fragmentation warhead 16, FIG. 1A is conventional as is guidance subsystem 18 but the preferred kinetic energy rod warhead section is aimable and typically configured as shown in FIGS. 2 5. Kinetic energy rod warhead 14 includes an explosive charge divided into a number of sections 202, 204, 206, and 208. Shields such as shield 225 separate explosive charge sections 204 and 206. Shield 225 maybe made of a composite material such as a steel core sandwiched between inner and outer lexan layers to prevent the detonation of one explosive charge section from detonating the other explosive charge sections. Detonation cord resides between hull sections 210, 212, and 214 each having a jettison explosive pack 220, 224, and 226. High density projectiles 24 or rods 24 reside in the core or bay of warhead 200 as shown. To aim all of the rods 24 in a specific direction, the detonation cord on each side of hull sections 210, 212, and 214 is initiated as are jettison explosive packs 220, 222, and 224 as shown in FIGS. 2 3 to eject hull sections 210, 212, and 214 away from the intended travel direction of projectiles 24. Explosive charge section 202, FIG. 4 is then detonated as shown in FIG. 5 using a number of detonators to deploy projectiles 24 into the trajectory path of the target as shown in FIG. 1B. Thus, by selectively detonating two or three explosive charge sections, the projectiles are specifically aimed at the trajectory path of the target. Typically, the hull portion referred to in FIGS. 2 3 is either the skin of the carrier missile or a portion added to the missile or housed within it as a separate module.

Preferred projectile designs for the kinetic energy rod section includes projectile 240, FIG. 6 with a pointed nose as shown or projectile 252, FIG. 7 having a star cross section and a pointed nose for higher lethality and better packaging density. As shown in FIG. 8, projectiles 252 each have a number of petals resulting in the ability to package many more projectiles in a given volume compared to projectiles having a cylindrical cross sectional shape shown in phantom in FIG. 8.

The result is a much higher lethality warhead design especially for the embodiment where the kinetic energy rod section is aimable to deploy the projectiles thereof in a specific direction and into the trajectory path 22, FIG. 1A of the target as shown in FIG. 1B and also wherein the projectiles have a non-cylindrical cross sectional shape and/or one end which is pointed. Further details concerning kinetic energy rod warheads are disclosed in copending U.S. patent application Ser. Nos. 09/938,022, 10/301,420 and 10/162,498 incorporated herein by this reference.

Although specific features of the invention are shown in some drawings and not in others, this is for convenience only as each feature may be combined with any or all of the other features in accordance with the invention. The words "including", "comprising", "having", and "with" as used herein are to be interpreted broadly and comprehensively and are not limited to any physical interconnection. Moreover, any embodiments disclosed in the subject application are not to be taken as the only possible embodiments.

Other embodiments will occur to those skilled in the art and are within the following claims.

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