US3620167A - Drive cage for wing-stabilized lowcaliber shells - Google Patents

Drive cage for wing-stabilized lowcaliber shells Download PDF

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Publication number
US3620167A
US3620167A US827729A US3620167DA US3620167A US 3620167 A US3620167 A US 3620167A US 827729 A US827729 A US 827729A US 3620167D A US3620167D A US 3620167DA US 3620167 A US3620167 A US 3620167A
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US
United States
Prior art keywords
drive cage
shell
segments
shell body
wing
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
US827729A
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English (en)
Inventor
Rudolf Romer
Jurgen Winkelmann
Winfried Rossmann
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Rheinmetall Industrie AG
Original Assignee
Rheinmetall GmbH
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Priority claimed from DE19681703507 external-priority patent/DE1703507C/de
Application filed by Rheinmetall GmbH filed Critical Rheinmetall GmbH
Application granted granted Critical
Publication of US3620167A publication Critical patent/US3620167A/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
    • 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

Definitions

  • a wing-stabilized low-caliber shell which comprises a shell body and a drive cage surrounding in the center range the shell body and comprising segments including loosely joined parts. At least one annular guide band holds together the segments.
  • a tail unit is secured to the shell body and the drive cage has an end face opposite the tail unit.
  • a sealing disc is disposed at the end face of the drive cage, and the guide band is disposed adjacent the sealing disc.
  • the present invention relates to a drive cage for wingstabilized low-caliber shells, in general, and to such shells in which the driveand guide-elements are disposed at the center portion of the shell body, in particular.
  • the driveand guide-elements comprise generally one or a plurality of annular bodies, which are divided by a longitudinal division into two or more segments.
  • the sub-division into individual segments is necessary, in order that the driveand guide-elements can release themselves from the shell body, when the shell has left the barrel.
  • the segments are held together as a mile by an annular band, which has to assume in addition a guidingand sealing-function for the shell in the barrel.
  • the drivingand guide-elements are disposed at about the center of the shell body, as is the case in the present embodiment, they are called frequently a drive ring or a drive cage. For this reason the term drive cage is used herebelow.
  • a difficulty in all wing-stabilized low-caliber shells resides in the fact to design the drive cage such, that it releases itself on the one hand quickly from the shell, as soon as the latter has left the barrel.
  • the flight of the low-caliber shell shall be influenced as little as possible, in order not to interfere with the target exactness.
  • the release of the segments is brought about mainly by the powder gases.
  • the rear part of the segments is designed such, that the powder gases open the drive cage from the rear, as soon as the drive cage has left the barrel.
  • the dynamic pressure, effective at the front of the shell is supposed to pry open simultaneously from the front the drive cage, so that the segments remove themselves without or with only a slight rotary movement radially from the low caliber shell.
  • the prying open of the segments by means of the powder gases leads to the abovementioned difficulties such, that the powder gases shortly surpassing the shell at the barrel mouth, do not amount to a regular quiet stream, rather contain strong turbulences, which lead to irregular release and for this reason frequently interfere often with the target exactness.
  • Another guide band is provided on the drive cage pointing towards the head of the shell.
  • the releasing process of the drive cage sets in with the shell, as soon as it has left the barrel, by air streaming in from the front. Only upon reaching a predetermined angular position of opened segments to the axis of the shell, the lifting of the rearward portion of the segments starts such, that an interference with the tail unit by the segments is in any case avoided.
  • FIG. 1 is a partly axial section of a wing-stabilized low caliber shell
  • FIG. 2 is an end elevation of the shell disclosed in FIG. 1 looking towards the head of the shell;
  • FIG. 3 is an elevation of a shell indicating the state in which the drive cage is released.
  • FIG. 4 is a fragmentary axial section of a drive cage with a sealing disc having a guide band consisting of one piece at the rear end.
  • the present invention comprises a drive cage 1 which is divided into at least two, preferably three or more segments 1a, 1b and 10. These segments are rigidly connected with the shell 2, as long as the shell 2 equipped with a tail unit 3 is disposed in the barrel (not shown), by the non-positive connection means 4, which are known in the form a thread or of grooves.
  • the segments 1a, 1b, and 1c are held together by at least an annular band 5, and additionally by a further band 6, respectively.
  • the bands 5 and 6 assumes simultaneously also the guidance of the drive cage 1 in the barrel.
  • the tail unit 3 has preferably a smaller diameter than that of the barrel.
  • a particularly advantageous arrangement resides in the fact, that the sealing disc 7 and the adjacent band 5 are produced of a single part 17.
  • the advantage resides in the amplification of the out-swept tail of the drive cage and in an improved guidingand sealing-function, as well as in a better securing possibility.
  • the releasing process starts only, when the front part of the drive cage 1 finds itself again in a uniform stream originating from the front and indicated by the stream lines 8.
  • the release which is enhanced by the great, trough-like recess 9 of the drive cage 1 takes place by prying open the drive cage segments 1a, 1b and 1c from the front, as shown in FIG. 3.
  • the sealing disc 7 or by the band 5 provided at the rear end of the drive cage 1, or by the combination of both elements in form of the part 17 the drive cage segments are still held together in the rear, while they have been removed already from the shell 2 at the front.
  • sealing disc 7 As material for the sealing disc 7, preferably the same synthetic material as used for the guide bands 5 and 6 is provided.
  • a wing-stabilized low-caliber shell comprising a shell body,
  • a drive cage surrounding in the center range said shell body and comprising segments including loosely joined parts
  • said drive cage having a rear side end face adjacent said tail unit
  • a sealing disc disposed on said rear side end face of said drive cage and disposed on said shell body forming on said shell body a rear inner edge
  • said shell body having a head
  • said drive cage including a. head side end face pointing to the head of said shell body, said head side end face having a trough-like recess extending over the entire diameter of said drive cage, whereby upon emerg ence of said shell body from a gun barrel the forming atmospheric pressure drives apart said segments away from said shell body pivotally about said inner edge constituting a pivot point until said sealing disc of the drive cage cooperates to form a destroying air wedge, which drives apart the segments into a position approximately parallel to the longitudinal axis of said shell body so that the distance spaced from each other is greater than the diameter of said tail unit.
  • the shell as set forth in claim 1, which includes a second guide band disposed on said drive cage and pointing to the head of said shell body.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Portable Nailing Machines And Staplers (AREA)
  • Testing Of Engines (AREA)
US827729A 1968-05-31 1969-05-26 Drive cage for wing-stabilized lowcaliber shells Expired - Lifetime US3620167A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19681703507 DE1703507C (de) 1968-05-31 Flugelstabilisiertes Unterkahber geschoß

Publications (1)

Publication Number Publication Date
US3620167A true US3620167A (en) 1971-11-16

Family

ID=5688452

Family Applications (1)

Application Number Title Priority Date Filing Date
US827729A Expired - Lifetime US3620167A (en) 1968-05-31 1969-05-26 Drive cage for wing-stabilized lowcaliber shells

Country Status (8)

Country Link
US (1) US3620167A (de)
BE (1) BE733594A (de)
CH (1) CH495547A (de)
FR (1) FR2009723A1 (de)
GB (1) GB1256740A (de)
NL (1) NL164955C (de)
NO (1) NO127941B (de)
SE (1) SE367479B (de)

Cited By (31)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3750578A (en) * 1972-01-04 1973-08-07 Us Army Expellable cartridge case
US3759184A (en) * 1972-01-27 1973-09-18 Us Army Self-obturating, expellable cartridge case
US3899978A (en) * 1972-07-22 1975-08-19 Rheinmetall Gmbh Fin-stabilized subcaliber projectile
US3981246A (en) * 1973-05-09 1976-09-21 Rheinmetall G.M.B.H. Fin-stabilized subcaliber projectile
US4029018A (en) * 1974-08-21 1977-06-14 Ab Bofors Sabot for subcalibre projectile
US4075946A (en) * 1976-01-30 1978-02-28 Thomson-Csf Armor piercing projectile
US4102271A (en) * 1976-02-12 1978-07-25 Rheinmetall Gmbh. Armor-piercing tandem shell or projectile
US4187783A (en) * 1978-03-13 1980-02-12 The United States Of America As Represented By The Secretary Of The Army Discarding sabot munition
US4195573A (en) * 1977-10-21 1980-04-01 Rheinmetall Gmbh Sub-caliber projectile of arrow-shaped form having a resistance-stabilizing tail section
US4450770A (en) * 1980-09-22 1984-05-29 The United States Of America As Represented By The Secretary Of The Army Pivot ring for a discarding sabot
US4559876A (en) * 1983-04-23 1985-12-24 Rheinmetall Gmbh Penetrator projectiles
US4565132A (en) * 1980-08-09 1986-01-21 Rheinmetall Gmbh. Form-locking means, material for forming same and process for arranging the form-locking means in the peripheral region of a projectile made out of the heavy metal sinter alloy
US4643099A (en) * 1980-10-04 1987-02-17 Rheinmetall Gmbh Armored-piercing projectile (penetrator)
US4671181A (en) * 1972-07-12 1987-06-09 Rheinmetall Gmbh Anti-tank shell
US4677915A (en) * 1981-07-04 1987-07-07 Rheinmetall Gmbh Armor-piercing projectile
US4724770A (en) * 1980-06-26 1988-02-16 Rheinmetall Gmbh Subcaliber projectile with pivotally separable drive cage
US4802415A (en) * 1987-12-28 1989-02-07 Ford Aerospace Corporation Telescoped ammunition round having subcaliber projectile sabot with integral piston
US4860661A (en) * 1987-11-06 1989-08-29 Diehl Gmbh & Co. Saboted projectile with propellant cage
US4941244A (en) * 1987-09-10 1990-07-17 Rheinmetall Gmbh Method of producing discarding sabot projectiles
US5040465A (en) * 1976-12-10 1991-08-20 Lacroix Soc E Launching projectile for electromagnetic decoys
US5133262A (en) * 1987-07-18 1992-07-28 Rheinmetall Gmbh Penetrator
US5227580A (en) * 1990-05-04 1993-07-13 Giat Industries Sealing device for an arrow projectile
US5473989A (en) * 1995-02-24 1995-12-12 Buc; Steven M. Fin-stabilized discarding sabot projectile
US6234082B1 (en) * 1997-09-24 2001-05-22 Giat Industries Large-caliber long-range field artillery projectile
US20030145756A1 (en) * 2002-02-04 2003-08-07 Giat Industries Sabot for fin-stabilised ammunition
US20090126595A1 (en) * 2006-05-08 2009-05-21 Bae Systems Bofors Ab Method for manufacturing banded projectiles intended for firing from rifled barrels and projectiles made according to the method, and method for utilizing their special characteristics imparted by the method for manufacture when firing these projectiles
US20100212479A1 (en) * 2009-02-20 2010-08-26 Rheinmetall Waffe Munition Gmbh Method for inserting predetermined breaking points in a ring-shaped holding- and sealing band of a sabot cage projectile and a work tool for carrying out the method
US20100236441A1 (en) * 2009-02-20 2010-09-23 Rheinmetall Waffe Munition Gmbh Cartridge
US9488455B1 (en) 2015-01-22 2016-11-08 Consolidated Nuclear Security, LLC Sabot assembly
US20180216922A1 (en) * 2015-07-01 2018-08-02 Rwm Schweiz Ag Fin-stabilized sub-caliber projectile that can be fired from a rifled barrel, and method for the production thereof
US10139207B2 (en) * 2016-02-04 2018-11-27 Richard D Adams Projectile having increased velocity and aerodynamic performance

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2945291A1 (de) * 1979-11-09 1981-05-21 Rheinmetall GmbH, 4000 Düsseldorf Treibkaefig fuer ein unterkalibriges geschoss
DE3148264A1 (de) * 1981-12-05 1983-06-16 Rheinmetall GmbH, 4000 Düsseldorf Verwendung eines teils einer treibladung als abdichtmittel
DE3508053A1 (de) * 1985-03-07 1986-09-18 Rheinmetall GmbH, 4000 Düsseldorf Wuchtgeschoss
FR2661739A1 (fr) * 1990-05-04 1991-11-08 Giat Ind Sa Dispositif d'etancheite d'un projectile fleche.
FR3114288A1 (fr) 2020-09-24 2022-03-25 Psa Automobiles Sa Procédé et dispositif de conduite autonome d’un véhicule terrestre à moteur, appelé égo-véhicule, par régulation de vitesse adaptative fondée sur une accélération consigne.

Cited By (39)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3750578A (en) * 1972-01-04 1973-08-07 Us Army Expellable cartridge case
US3759184A (en) * 1972-01-27 1973-09-18 Us Army Self-obturating, expellable cartridge case
US4671181A (en) * 1972-07-12 1987-06-09 Rheinmetall Gmbh Anti-tank shell
US3899978A (en) * 1972-07-22 1975-08-19 Rheinmetall Gmbh Fin-stabilized subcaliber projectile
US3981246A (en) * 1973-05-09 1976-09-21 Rheinmetall G.M.B.H. Fin-stabilized subcaliber projectile
US4029018A (en) * 1974-08-21 1977-06-14 Ab Bofors Sabot for subcalibre projectile
US4075946A (en) * 1976-01-30 1978-02-28 Thomson-Csf Armor piercing projectile
US4102271A (en) * 1976-02-12 1978-07-25 Rheinmetall Gmbh. Armor-piercing tandem shell or projectile
US5040465A (en) * 1976-12-10 1991-08-20 Lacroix Soc E Launching projectile for electromagnetic decoys
US4195573A (en) * 1977-10-21 1980-04-01 Rheinmetall Gmbh Sub-caliber projectile of arrow-shaped form having a resistance-stabilizing tail section
US4187783A (en) * 1978-03-13 1980-02-12 The United States Of America As Represented By The Secretary Of The Army Discarding sabot munition
US4724770A (en) * 1980-06-26 1988-02-16 Rheinmetall Gmbh Subcaliber projectile with pivotally separable drive cage
US4850279A (en) * 1980-06-26 1989-07-25 Firma Rheinmetall Gmbh Subcaliber projectile with pivotally separable drive cage
US4565132A (en) * 1980-08-09 1986-01-21 Rheinmetall Gmbh. Form-locking means, material for forming same and process for arranging the form-locking means in the peripheral region of a projectile made out of the heavy metal sinter alloy
US4768441A (en) * 1980-08-09 1988-09-06 Rheinmetall Gmbh Subcaliber segmented sabot projectile and manufacturing process
US4727639A (en) * 1980-08-09 1988-03-01 Rheinmetall Gmbh Method of manufacturing subcaliber segmented sabot projectile
US4450770A (en) * 1980-09-22 1984-05-29 The United States Of America As Represented By The Secretary Of The Army Pivot ring for a discarding sabot
US4643099A (en) * 1980-10-04 1987-02-17 Rheinmetall Gmbh Armored-piercing projectile (penetrator)
US4677915A (en) * 1981-07-04 1987-07-07 Rheinmetall Gmbh Armor-piercing projectile
US4624187A (en) * 1983-04-23 1986-11-25 Rheinmetall Gmbh Penetrator projectiles
US4559876A (en) * 1983-04-23 1985-12-24 Rheinmetall Gmbh Penetrator projectiles
US5133262A (en) * 1987-07-18 1992-07-28 Rheinmetall Gmbh Penetrator
US4941244A (en) * 1987-09-10 1990-07-17 Rheinmetall Gmbh Method of producing discarding sabot projectiles
US4860661A (en) * 1987-11-06 1989-08-29 Diehl Gmbh & Co. Saboted projectile with propellant cage
US4802415A (en) * 1987-12-28 1989-02-07 Ford Aerospace Corporation Telescoped ammunition round having subcaliber projectile sabot with integral piston
US5227580A (en) * 1990-05-04 1993-07-13 Giat Industries Sealing device for an arrow projectile
US5473989A (en) * 1995-02-24 1995-12-12 Buc; Steven M. Fin-stabilized discarding sabot projectile
US6234082B1 (en) * 1997-09-24 2001-05-22 Giat Industries Large-caliber long-range field artillery projectile
US20030145756A1 (en) * 2002-02-04 2003-08-07 Giat Industries Sabot for fin-stabilised ammunition
US6805058B2 (en) * 2002-02-04 2004-10-19 Giat Industries Sabot for fin-stabilized ammunition
US20090126595A1 (en) * 2006-05-08 2009-05-21 Bae Systems Bofors Ab Method for manufacturing banded projectiles intended for firing from rifled barrels and projectiles made according to the method, and method for utilizing their special characteristics imparted by the method for manufacture when firing these projectiles
US20100212479A1 (en) * 2009-02-20 2010-08-26 Rheinmetall Waffe Munition Gmbh Method for inserting predetermined breaking points in a ring-shaped holding- and sealing band of a sabot cage projectile and a work tool for carrying out the method
US20100236441A1 (en) * 2009-02-20 2010-09-23 Rheinmetall Waffe Munition Gmbh Cartridge
US8171838B2 (en) 2009-02-20 2012-05-08 Rheinmetall Waffe Munition Gmbh Method for inserting predetermined breaking points in a ring-shaped holding- and sealing band of a sabot cage projectile and a work tool for carrying out the method
US8171854B2 (en) 2009-02-20 2012-05-08 Rheinmetall Waffe Munition Gmbh Cartridge
US9488455B1 (en) 2015-01-22 2016-11-08 Consolidated Nuclear Security, LLC Sabot assembly
US20180216922A1 (en) * 2015-07-01 2018-08-02 Rwm Schweiz Ag Fin-stabilized sub-caliber projectile that can be fired from a rifled barrel, and method for the production thereof
US10996035B2 (en) * 2015-07-01 2021-05-04 Rwm Schweiz Ag Fin-stabilized sub-caliber projectile that can be fired from a rifled barrel, and method for the production thereof
US10139207B2 (en) * 2016-02-04 2018-11-27 Richard D Adams Projectile having increased velocity and aerodynamic performance

Also Published As

Publication number Publication date
BE733594A (de) 1969-11-03
SE367479B (de) 1974-05-27
NL164955B (nl) 1980-09-15
DE1703507A1 (de) 1972-03-09
CH495547A (de) 1970-08-31
NL164955C (nl) 1981-02-16
FR2009723A1 (de) 1970-02-06
NL6905955A (de) 1969-12-02
NO127941B (de) 1973-09-03
GB1256740A (de) 1971-12-15

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