US3902424A - Projectile - Google Patents

Projectile Download PDF

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Publication number
US3902424A
US3902424A US423048A US42304873A US3902424A US 3902424 A US3902424 A US 3902424A US 423048 A US423048 A US 423048A US 42304873 A US42304873 A US 42304873A US 3902424 A US3902424 A US 3902424A
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US
United States
Prior art keywords
cavity
tracer
projectile
flechette
tube
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
US423048A
Inventor
Francis W Dietsch
Ronald D Digirolamo
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US Department of Army
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US Department of Army
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Priority to US423048A priority Critical patent/US3902424A/en
Application granted granted Critical
Publication of US3902424A publication Critical patent/US3902424A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F42—AMMUNITION; BLASTING
    • F42B—EXPLOSIVE CHARGES, e.g. FOR BLASTING, FIREWORKS, AMMUNITION
    • F42B12/00—Projectiles, missiles or mines characterised by the warhead, the intended effect, or the material
    • F42B12/02—Projectiles, missiles or mines characterised by the warhead, the intended effect, or the material characterised by the warhead or the intended effect
    • F42B12/36—Projectiles, missiles or mines characterised by the warhead, the intended effect, or the material characterised by the warhead or the intended effect for dispensing materials; for producing chemical or physical reaction; for signalling ; for transmitting information
    • F42B12/38—Projectiles, missiles or mines characterised by the warhead, the intended effect, or the material characterised by the warhead or the intended effect for dispensing materials; for producing chemical or physical reaction; for signalling ; for transmitting information of tracer type
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F42—AMMUNITION; BLASTING
    • F42B—EXPLOSIVE CHARGES, e.g. FOR BLASTING, FIREWORKS, AMMUNITION
    • F42B10/00—Means for influencing, e.g. improving, the aerodynamic properties of projectiles or missiles; Arrangements on projectiles or missiles for stabilising, steering, range-reducing, range-increasing or fall-retarding
    • F42B10/02—Stabilising arrangements
    • F42B10/04—Stabilising arrangements using fixed fins
    • F42B10/06—Tail fins
    • F42B10/08—Flechette-type projectiles
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F42—AMMUNITION; BLASTING
    • F42B—EXPLOSIVE CHARGES, e.g. FOR BLASTING, FIREWORKS, AMMUNITION
    • F42B14/00—Projectiles or missiles characterised by arrangements for guiding or sealing them inside barrels, or for lubricating or cleaning barrels
    • F42B14/06—Sub-calibre projectiles having sabots; Sabots therefor
    • F42B14/061—Sabots for long rod fin stabilised kinetic energy projectiles, i.e. multisegment sabots attached midway on the projectile
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S102/00—Ammunition and explosives
    • Y10S102/703—Flechette

Definitions

  • PROJECTILE Inventors: Francis W. Dietsch, Levittown;
  • This invention relates to projectiles, and more particularly to a small caliber flechette-type projectile.
  • Another object of the invention is to provide such a projectile that will have ballistic trajectory equivalent to that of a small caliber ball flechette projectile.
  • FIG. 2 is a sectional view taken along lines 2-2 of FIG. 1.
  • the small caliber flechette projectile shown generally at (FlG.l has a forward nose portion I] and a substantially cylindrical rearward portion l2 (FIGS. 1, 2 carrying a plurality of fin stabilizers 13 at the rearmost end of the projectile.
  • Surrounding the forward portion of the projectile. particularly at the tapered nose I1. is a plurality of segmental sabot portions l4 held in pre-flight position by an appropriate rubber sealing ring [5.
  • the sabot has its own tapered nose and. after the projectile is fired from a suitable gun muzzle. its multiple segmental portions 14 are released and rapidly fall away from the projectile due to the operative expanding and rupturing of sealing ring 15.
  • the fin stabilizers 13. which extend substantially radially outward from the rearward end ofcylindrical portion 12. are each formed to incline at a slight angle (approximately 1.5") to the longitudinal axis of the projectile to facilitate imparting spin to the launched projectile.
  • the igniter tube I9 is located at the rearward end of the cavity 16 and held in position thcrebetween by an appropriate deforming action provided on the rearmost end of the then filled hollow cylindrical portion 12.
  • the preferred means of deforming the rearward end of cylindrical portion 12 is by crimping with an appropriate crimping tool positioned at predetermined peripheral locations between rearmost portions of adjacent ones of the outwardly extending fins l3.
  • the projectile cylindrical portion 12 has an external diameter of 0.l inches. its cavity 16 has a recessed or drilled surface diameter of 0.06 inches. and the span across a pair of substantially diametrically opposed fins IB is 0.2 inches.
  • said rearmos portion having a diameter greater than that of said inttgrmediate portion.
  • said cylindrical rearwardmost portion having a pluarlity of fin stabilizers extending radially outward l therefrom and a rearwaidly opening longitudinally extending internal tracer cavity. said cavity having a forward wall located rearward of said intermediate cylindrical portion.
  • a tube of tracer material in said cavity y a multiple segmented sabot surrounding said nose portion.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Orthopedics, Nursing, And Contraception (AREA)

Abstract

A flechette small caliber projectile providing tracer visibility capability during flight while ballistically trajectory matching a small caliber ball flechette and retaining a high velocity low drag profile. Tracer material is located in a rearwardly opening internal cavity provided in the flechette projectile cylindrical body portion. Fin stabilizers surround or extend radially outward of the tracer cavity.

Description

United States Patent Dietsch et al.
Assignee:
Filed:
PROJECTILE Inventors: Francis W. Dietsch, Levittown;
Ronald D. DiGirolamo, Philadelphia, both of Pa.
The United States of America as Dec. 7, 1973 App]. No.: 423,048
[52] US. Cl. 102/87; lO2/93; lOZ/DIG. 7 [51] Int. Cl. F42B 11/16 [58] Field of Search lO2/DIG. 7, 38, 93, 87
[56] References Cited UNITED STATES PATENTS 219,881 9/l879 Streeter 244/323 2,115,047 4/1938 Stevenson... 102/87 2.4()9,427 lO/l946 Fonberg 1 244/323 2,4l2,266 l2/l946 Hoagland 244/323 3,033.1 l6 5/1962 Critcher et al.. lO2/DlG. 7 X 3.l48,472 9/1964 Heggc et al lOZ/DlG. 7 X 3,401,636 9/1968 Ciccone et al l02/DlG. 7 X
OTHER PUBLICATIONS Fin Stabilization or Spin Major Hobart Ordnance Weapons Technology Jan-Feb. 1973.
Primary ExaminerStephen C. Bentley Assistant ExaminerHarold Tudor Attorney, Agent, or Firm-Nathan Edelberg; Robert P. Gibson [5 7} ABSTRACT A flechette small caliber projectile providing tracer visibility capability during flight while ballistically trajectory matching a small caliber ball flechette and retaining a high velocity low drag profile. Tracer material is located in a rearwardly opening internal cavity provided in the flechette projectile cylindrical body mporltion. Fin stabilizers surround or extend radially outward of the tracer cavity.
' 1 Claim, 2 Drawing Figures PROJEC'IILE The invention described herein may be manufactured. used and licensed by or for the Government for governmental purposes without the payment to us of any royalty thereon.
This invention relates to projectiles, and more particularly to a small caliber flechette-type projectile.
It is an object of the invention to provide a small caliber flechette projectile having tracer visibility capability during its flight.
Another object of the invention is to provide such a projectile that will have ballistic trajectory equivalent to that of a small caliber ball flechette projectile.
A further object of the invention is to provide such a projectile that retains a high velocity low drag profile.
These and other objects. features and advantages will become more apparent from the following description and accompanying drawings in which:
FIG. 1 is an elevational view. paratially broken away in section. ofa preferred projectile embodying the principles of the invention. J
FIG. 2 is a sectional view taken along lines 2-2 of FIG. 1.
The small caliber flechette projectile. shown generally at (FlG.l has a forward nose portion I] and a substantially cylindrical rearward portion l2 (FIGS. 1, 2 carrying a plurality of fin stabilizers 13 at the rearmost end of the projectile. Surrounding the forward portion of the projectile. particularly at the tapered nose I1. is a plurality of segmental sabot portions l4 held in pre-flight position by an appropriate rubber sealing ring [5. The sabot has its own tapered nose and. after the projectile is fired from a suitable gun muzzle. its multiple segmental portions 14 are released and rapidly fall away from the projectile due to the operative expanding and rupturing of sealing ring 15.
Preferably. the fin stabilizers 13. which extend substantially radially outward from the rearward end ofcylindrical portion 12. are each formed to incline at a slight angle (approximately 1.5") to the longitudinal axis of the projectile to facilitate imparting spin to the launched projectile.
The projectile cylindrical portion 12 is provided with a rcarwardly opening. longitudinally extending. drilled internal tracer cavity 16 in which is located, preferably.
an elongated tube 17 of tracer material 18 and a somewhat shorter length of tubing 19 containing igniter material 20 (FIG. 2). The igniter tube I9 is located at the rearward end of the cavity 16 and held in position thcrebetween by an appropriate deforming action provided on the rearmost end of the then filled hollow cylindrical portion 12. The preferred means of deforming the rearward end of cylindrical portion 12 is by crimping with an appropriate crimping tool positioned at predetermined peripheral locations between rearmost portions of adjacent ones of the outwardly extending fins l3. Preferably. the projectile cylindrical portion 12 has an external diameter of 0.l inches. its cavity 16 has a recessed or drilled surface diameter of 0.06 inches. and the span across a pair of substantially diametrically opposed fins IB is 0.2 inches.
Various modifications. changes or alterations may be resorted to without departing from the scope of the invention as defined in the appended claims.
We claim:
1. In a flechette projectile arrangement having a substantially pointed forward nose portionQa substantially cylindrical rearwardmost portion. and 'an intermediate substantially cylindrical portion.
said rearmos portion having a diameter greater than that of said inttgrmediate portion. I said cylindrical rearwardmost portion having a pluarlity of fin stabilizers extending radially outward l therefrom and a rearwaidly opening longitudinally extending internal tracer cavity. said cavity having a forward wall located rearward of said intermediate cylindrical portion.
a tube of tracer material in said cavity. y a multiple segmented sabot surrounding said nose portion.
tube. for retaining said tracer tube in said cavity.

Claims (1)

1. In a flechette projectile arrangement having a substantially pointed forward nose portion, a substantially cylindrical rearwardmost portion, and an intermediate substantially cylindrical portion, said rearmost portion having a diameter greater than that of said intermediate portion, said cylindrical rearwardmost portion having a pluarlity of fin stabilizers extending radially outward therefrom and a rearwardly opening longitudinally extending internal tracer cavity, said cavity having a forward wall located rearward of said intermediate cylindrical portion, a tube of tracer material in said cavity, a multiple segmented sabot surrounding said nose portion, a rupturable rubber sealing ring surrounding the multiple segmental sabot, each of said fin stabilizers extending in a direction inclined to the longitudinal axis of said projectile, and means, including an igniter tube in a rearward end of said cavity of said cylindrical rearmost portion and longitudinally aligned rearwardly of said tracer tube, for retaining said tracer tube in said cavity.
US423048A 1973-12-07 1973-12-07 Projectile Expired - Lifetime US3902424A (en)

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Cited By (26)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4123975A (en) * 1976-03-03 1978-11-07 Mohaupt Henry H Penetrating projectile system and apparatus
US4536928A (en) * 1983-11-17 1985-08-27 Honeywell Inc. Manufacture of projectiles
US4706569A (en) * 1979-12-03 1987-11-17 Rheinmetall Gmbh Armor breaking projectile
US4714024A (en) * 1983-04-23 1987-12-22 Rheinmetall Gmbh Nose for an inertial projectile
US4754704A (en) * 1985-03-22 1988-07-05 Nico-Pyrotechnik Hanns-Jurgen Diederichs Gmbh & Co. Kg Propellant charge for the reduction of base eddying
US4858533A (en) * 1988-05-06 1989-08-22 Honeywell Inc. Cased telescoped ammunition round for a fin stabilized projectile
WO1991019160A1 (en) * 1990-06-05 1991-12-12 Olin Corporation Kinetic energy projectile with pyrotechnic payload
FR2671622A1 (en) * 1984-05-23 1992-07-17 Dynamit Nobel Ag PROJECTILE WITH REPORTED HAT.
US6655293B1 (en) 2000-06-29 2003-12-02 General Dynamics Ordnance And Tactical Systems, Inc. Fin-stabilized ammunition
US20040055498A1 (en) * 2002-08-29 2004-03-25 Lloyd Richard M. Kinetic energy rod warhead deployment system
US20040055500A1 (en) * 2001-06-04 2004-03-25 Lloyd Richard M. Warhead with aligned projectiles
US20040129162A1 (en) * 2002-08-29 2004-07-08 Lloyd Richard M. Kinetic energy rod warhead with imploding charge for isotropic firing of the penetrators
US20040200380A1 (en) * 2001-08-23 2004-10-14 Lloyd Richard M. Kinetic energy rod warhead with lower deployment angles
US20050109234A1 (en) * 2001-08-23 2005-05-26 Lloyd Richard M. Kinetic energy rod warhead with lower deployment angles
US20050115450A1 (en) * 2003-10-31 2005-06-02 Lloyd Richard M. Vehicle-borne system and method for countering an incoming threat
US20050126421A1 (en) * 2002-08-29 2005-06-16 Lloyd Richard M. Tandem warhead
US20050132923A1 (en) * 2002-08-29 2005-06-23 Lloyd Richard M. Fixed deployed net for hit-to-kill vehicle
US20060021538A1 (en) * 2002-08-29 2006-02-02 Lloyd Richard M Kinetic energy rod warhead deployment system
US20060086279A1 (en) * 2001-08-23 2006-04-27 Lloyd Richard M Kinetic energy rod warhead with lower deployment angles
US20060283348A1 (en) * 2001-08-23 2006-12-21 Lloyd Richard M Kinetic energy rod warhead with self-aligning penetrators
US20070084376A1 (en) * 2001-08-23 2007-04-19 Lloyd Richard M Kinetic energy rod warhead with aiming mechanism
US20090205529A1 (en) * 2001-08-23 2009-08-20 Lloyd Richard M Kinetic energy rod warhead with lower deployment angles
US7624683B2 (en) 2001-08-23 2009-12-01 Raytheon Company Kinetic energy rod warhead with projectile spacing
US7717042B2 (en) 2004-11-29 2010-05-18 Raytheon Company Wide area dispersal warhead
US7726244B1 (en) 2003-10-14 2010-06-01 Raytheon Company Mine counter measure system
US8418623B2 (en) 2010-04-02 2013-04-16 Raytheon Company Multi-point time spacing kinetic energy rod warhead and system

Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US219881A (en) * 1879-09-23 Improvement in arrows
US2115047A (en) * 1936-11-30 1938-04-26 Stevenson Thomas Tracer ammunition and to an igniter mixture for tracer compositions
US2409427A (en) * 1943-07-01 1946-10-15 Fonberg Zygmunt Equilibrated rocket shell
US2412266A (en) * 1944-02-22 1946-12-10 Reginald W Hoagland Reaction propelled device
US3033116A (en) * 1958-05-20 1962-05-08 John L Critcher Ammunition
US3148472A (en) * 1962-06-11 1964-09-15 Edward N Hegge Subcaliber projectile and sabot for high velocity firearms
US3401636A (en) * 1966-11-30 1968-09-17 Army Usa Clad pyrotechnics
US3430570A (en) * 1967-05-25 1969-03-04 Aai Corp Sabot with internal radial slots
US3476048A (en) * 1967-06-30 1969-11-04 Aai Corp Underwater ammunition
US3515072A (en) * 1968-05-02 1970-06-02 Us Army Tracer projectile
US3834314A (en) * 1972-12-29 1974-09-10 Aai Corp Puller sabot ammunition with slip seal

Patent Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US219881A (en) * 1879-09-23 Improvement in arrows
US2115047A (en) * 1936-11-30 1938-04-26 Stevenson Thomas Tracer ammunition and to an igniter mixture for tracer compositions
US2409427A (en) * 1943-07-01 1946-10-15 Fonberg Zygmunt Equilibrated rocket shell
US2412266A (en) * 1944-02-22 1946-12-10 Reginald W Hoagland Reaction propelled device
US3033116A (en) * 1958-05-20 1962-05-08 John L Critcher Ammunition
US3148472A (en) * 1962-06-11 1964-09-15 Edward N Hegge Subcaliber projectile and sabot for high velocity firearms
US3401636A (en) * 1966-11-30 1968-09-17 Army Usa Clad pyrotechnics
US3430570A (en) * 1967-05-25 1969-03-04 Aai Corp Sabot with internal radial slots
US3476048A (en) * 1967-06-30 1969-11-04 Aai Corp Underwater ammunition
US3515072A (en) * 1968-05-02 1970-06-02 Us Army Tracer projectile
US3834314A (en) * 1972-12-29 1974-09-10 Aai Corp Puller sabot ammunition with slip seal

Cited By (42)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4123975A (en) * 1976-03-03 1978-11-07 Mohaupt Henry H Penetrating projectile system and apparatus
US4706569A (en) * 1979-12-03 1987-11-17 Rheinmetall Gmbh Armor breaking projectile
US4714024A (en) * 1983-04-23 1987-12-22 Rheinmetall Gmbh Nose for an inertial projectile
US4536928A (en) * 1983-11-17 1985-08-27 Honeywell Inc. Manufacture of projectiles
FR2671622A1 (en) * 1984-05-23 1992-07-17 Dynamit Nobel Ag PROJECTILE WITH REPORTED HAT.
US4754704A (en) * 1985-03-22 1988-07-05 Nico-Pyrotechnik Hanns-Jurgen Diederichs Gmbh & Co. Kg Propellant charge for the reduction of base eddying
US4858533A (en) * 1988-05-06 1989-08-22 Honeywell Inc. Cased telescoped ammunition round for a fin stabilized projectile
WO1991019160A1 (en) * 1990-06-05 1991-12-12 Olin Corporation Kinetic energy projectile with pyrotechnic payload
US5097766A (en) * 1990-06-05 1992-03-24 Olin Corporation Kinetic energy projectile with pyrotechnic payload
US6655293B1 (en) 2000-06-29 2003-12-02 General Dynamics Ordnance And Tactical Systems, Inc. Fin-stabilized ammunition
US20040216635A1 (en) * 2000-06-29 2004-11-04 General Dynamics Ordnance & Tactical Systems Fin-stabilized ammunition
US6854394B2 (en) 2000-06-29 2005-02-15 General Dynamics Ordnance And Tactical Systems, Inc. Fin-stabilized ammunition
US20040055500A1 (en) * 2001-06-04 2004-03-25 Lloyd Richard M. Warhead with aligned projectiles
US6973878B2 (en) 2001-06-04 2005-12-13 Raytheon Company Warhead with aligned projectiles
US8127686B2 (en) 2001-08-23 2012-03-06 Raytheon Company Kinetic energy rod warhead with aiming mechanism
US20040200380A1 (en) * 2001-08-23 2004-10-14 Lloyd Richard M. Kinetic energy rod warhead with lower deployment angles
US20050109234A1 (en) * 2001-08-23 2005-05-26 Lloyd Richard M. Kinetic energy rod warhead with lower deployment angles
US7624683B2 (en) 2001-08-23 2009-12-01 Raytheon Company Kinetic energy rod warhead with projectile spacing
US7624682B2 (en) 2001-08-23 2009-12-01 Raytheon Company Kinetic energy rod warhead with lower deployment angles
US7621222B2 (en) 2001-08-23 2009-11-24 Raytheon Company Kinetic energy rod warhead with lower deployment angles
US20090205529A1 (en) * 2001-08-23 2009-08-20 Lloyd Richard M Kinetic energy rod warhead with lower deployment angles
US20070084376A1 (en) * 2001-08-23 2007-04-19 Lloyd Richard M Kinetic energy rod warhead with aiming mechanism
US20060086279A1 (en) * 2001-08-23 2006-04-27 Lloyd Richard M Kinetic energy rod warhead with lower deployment angles
US20060283348A1 (en) * 2001-08-23 2006-12-21 Lloyd Richard M Kinetic energy rod warhead with self-aligning penetrators
US20040055498A1 (en) * 2002-08-29 2004-03-25 Lloyd Richard M. Kinetic energy rod warhead deployment system
US7412916B2 (en) 2002-08-29 2008-08-19 Raytheon Company Fixed deployed net for hit-to-kill vehicle
US20060112817A1 (en) * 2002-08-29 2006-06-01 Lloyd Richard M Fixed deployed net for hit-to-kill vehicle
US20060162604A1 (en) * 2002-08-29 2006-07-27 Lloyd Richard M Tandem warhead
US7143698B2 (en) 2002-08-29 2006-12-05 Raytheon Company Tandem warhead
US20060021538A1 (en) * 2002-08-29 2006-02-02 Lloyd Richard M Kinetic energy rod warhead deployment system
US6931994B2 (en) 2002-08-29 2005-08-23 Raytheon Company Tandem warhead
US20040129162A1 (en) * 2002-08-29 2004-07-08 Lloyd Richard M. Kinetic energy rod warhead with imploding charge for isotropic firing of the penetrators
US7415917B2 (en) 2002-08-29 2008-08-26 Raytheon Company Fixed deployed net for hit-to-kill vehicle
US7017496B2 (en) 2002-08-29 2006-03-28 Raytheon Company Kinetic energy rod warhead with imploding charge for isotropic firing of the penetrators
US20090223404A1 (en) * 2002-08-29 2009-09-10 Lloyd Richard M Fixed deployed net for hit-to-kill vehicle
US20050132923A1 (en) * 2002-08-29 2005-06-23 Lloyd Richard M. Fixed deployed net for hit-to-kill vehicle
US20050126421A1 (en) * 2002-08-29 2005-06-16 Lloyd Richard M. Tandem warhead
US7726244B1 (en) 2003-10-14 2010-06-01 Raytheon Company Mine counter measure system
US6920827B2 (en) 2003-10-31 2005-07-26 Raytheon Company Vehicle-borne system and method for countering an incoming threat
US20050115450A1 (en) * 2003-10-31 2005-06-02 Lloyd Richard M. Vehicle-borne system and method for countering an incoming threat
US7717042B2 (en) 2004-11-29 2010-05-18 Raytheon Company Wide area dispersal warhead
US8418623B2 (en) 2010-04-02 2013-04-16 Raytheon Company Multi-point time spacing kinetic energy rod warhead and system

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