EP0053421A1 - Geschoss für eine Zentrifugalschleuderwaffe - Google Patents

Geschoss für eine Zentrifugalschleuderwaffe Download PDF

Info

Publication number: EP0053421A1
Authority: EP; European Patent Office
Prior art keywords: projectile; tail; gravity; center; speed
Prior art date: 1980-12-04
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.): Granted

Application number

EP81201299A

Other languages

English (en)

French (fr)

Other versions

EP0053421B1 (de

Inventor

Léon Rutten

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.)

Individual

Original Assignee

Individual

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.)

1980-12-04

Filing date

1981-11-24

Publication date

1982-06-09

1981-11-24 Application filed by Individual filed Critical Individual

1981-11-24 Priority to AT81201299T priority Critical patent/ATE9182T1/de

1982-06-09 Publication of EP0053421A1 publication Critical patent/EP0053421A1/de

1984-08-29 Application granted granted Critical

1984-08-29 Publication of EP0053421B1 publication Critical patent/EP0053421B1/de

Status Expired legal-status Critical Current

Links

230000005484 gravity Effects 0.000 claims abstract description 10
230000003247 decreasing effect Effects 0.000 claims abstract description 4
238000002347 injection Methods 0.000 claims abstract 2
239000007924 injection Substances 0.000 claims abstract 2
RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 2
229910052802 copper Inorganic materials 0.000 claims description 2
239000010949 copper Substances 0.000 claims description 2
238000004381 surface treatment Methods 0.000 claims description 2
230000001681 protective effect Effects 0.000 claims 1
229920000297 Rayon Polymers 0.000 description 4
229910000831 Steel Inorganic materials 0.000 description 4
239000002964 rayon Substances 0.000 description 4
239000010959 steel Substances 0.000 description 4
230000001133 acceleration Effects 0.000 description 3
230000000694 effects Effects 0.000 description 3
239000004429 Calibre Substances 0.000 description 2
241000497429 Obus Species 0.000 description 2
239000002360 explosive Substances 0.000 description 2
238000005422 blasting Methods 0.000 description 1
230000007423 decrease Effects 0.000 description 1
230000001419 dependent effect Effects 0.000 description 1
230000009977 dual effect Effects 0.000 description 1
238000003754 machining Methods 0.000 description 1
239000000203 mixture Substances 0.000 description 1

Images

Classifications

- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F42—AMMUNITION; BLASTING
- F42B—EXPLOSIVE CHARGES, e.g. FOR BLASTING, FIREWORKS, AMMUNITION
- F42B6/00—Projectiles or missiles specially adapted for projection without use of explosive or combustible propellant charge, e.g. for blow guns, bows or crossbows, hand-held spring or air guns
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F41—WEAPONS
- F41B—WEAPONS FOR PROJECTING MISSILES WITHOUT USE OF EXPLOSIVE OR COMBUSTIBLE PROPELLANT CHARGE; WEAPONS NOT OTHERWISE PROVIDED FOR
- F41B3/00—Sling weapons
- F41B3/04—Centrifugal sling apparatus

Definitions

the present invention relates to a projectile for a centrifugal launcher.
Centrifugal launchers have been known for more than a century in different fields: shot blasting machines, sport, toys, weapons.
the present invention relates only to the field of armaments.
the resulting speed is therefore a composition of a radial speed and a tangential speed, these two speeds being perpendicular to each other.
the calculation makes it possible to demonstrate that for a steel ball of 20 mm in diameter (steel having an average admissible stress of 100 kg / mm2), launched by a bladed cannon of 475 mm so as to have a ejection speed of 800 m / sec., the Coriolis force reaches 4400 kg.
the contact of Herz would cause under these conditions a deformation of the ball by a meridian plate with an area of 44 mm2.
the ejection speed should be limited well below 500 m / sec.
the spherical shape must therefore be discarded for a modern projectile, especially since it is difficult to see how a projectile of this shape could be equipped with an explosive charge with an impact rocket.
the object of the invention is therefore to provide a projectile as close as possible to projectiles for conventional weapons, but adapted to be effectively used in a centrifugal machine equipped with a bladed gun.
a projectile of the type comprising an ogival head, a body and a tail of decreasing section, characterized in that said body is cylindrical and that the mass of said tail is chosen such that the the projectile's center of gravity is located in the fictitious base of said body close to the tail, respectively in the immediate vicinity of this base, while the shape of said tail is chosen so that no point on the surface of the latter touches the wall of the gun vane, particularly during the entire ejection of the projectile.
the dual condition of the position of the projectile's center of gravity and the shape of the tail prevents the projectile from tipping over when it is ejected.
the projectile represented in FIG. 1 therefore comprises an ogival head 1, a cylindrical body 2 and a tail of decreasing section 3. These three parts comprise recesses, generally designated at 4, intended to collaborate in the correct positioning of the center of gravity G.
the projectile made of steel, has a length of 92 mm, a maximum diameter of 20 mm (body 2) and a weight of 122 gr.
the limit shape of the generator of the tail 3 making it possible to avoid any contact with the vane-barrel 5 is defined by a calculated envelope curve whose equation, in the system of axes of FIG. 2, is:
the angle p is the angle between the direction of the resulting speed V R and the tangential speed V.
This angle depends on the coefficient of friction between the shell and the bore of the barrel.
the envelope curve is dependent on the dimensions r l , r 2 of the machine, the size and the coefficient of friction. Thus, for a given machine, whatever the speed, the envelope curve is fixed.
the launching of the projectile at speeds equal to or greater than 800 m / sec. may give rise to viscous cutouts during translation in the vane-barrel as well as to a surface plasticization at the exit of the latter, it is advisable to give the body 2 an appropriate surface treatment, for example copper.

Landscapes

Engineering & Computer Science (AREA)
General Engineering & Computer Science (AREA)
Toys (AREA)
Aiming, Guidance, Guns With A Light Source, Armor, Camouflage, And Targets (AREA)
Chair Legs, Seat Parts, And Backrests (AREA)
Golf Clubs (AREA)
Soft Magnetic Materials (AREA)
Structure Of Belt Conveyors (AREA)
Diaphragms For Electromechanical Transducers (AREA)
Control Of Vending Devices And Auxiliary Devices For Vending Devices (AREA)
Structures Of Non-Positive Displacement Pumps (AREA)

EP81201299A 1980-12-04 1981-11-24 Geschoss für eine Zentrifugalschleuderwaffe Expired EP0053421B1 (de)

Priority Applications (1)

Application Number	Priority Date	Filing Date	Title
AT81201299T ATE9182T1 (de)	1980-12-04	1981-11-24	Geschoss fuer eine zentrifugalschleuderwaffe.

Applications Claiming Priority (2)

Application Number	Priority Date	Filing Date	Title
BE2058886		1980-12-04
BE2058886		1980-12-04

Publications (2)

Publication Number	Publication Date
EP0053421A1 true EP0053421A1 (de)	1982-06-09
EP0053421B1 EP0053421B1 (de)	1984-08-29

Family

ID=3865526

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
EP81201299A Expired EP0053421B1 (de)	1980-12-04	1981-11-24	Geschoss für eine Zentrifugalschleuderwaffe

Country Status (6)

Country	Link
US (1)	US4445436A (de)
EP (1)	EP0053421B1 (de)
AT (1)	ATE9182T1 (de)
BE (1)	BE886481A (de)
DE (1)	DE3165796D1 (de)
IL (1)	IL64461A (de)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
BE886481A (fr) *	1980-12-04	1981-06-04	Rutten Leon	Projectile pour lanceur centrifuge.
AU8751191A (en) *	1990-08-23	1992-03-17	International Shooter Development Fund, Inc.	Match-grade rifle cartridge with improved components

Citations (3)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
FR796149A (fr) *	1934-11-02	1936-03-30		Perfectionnements aux fusils centrifuges
US2043117A (en) *	1934-11-02	1936-06-02	Baden-Powell Baden Fletc Smyth	Centrifugal gun
BE886481A (fr) *	1980-12-04	1981-06-04	Rutten Leon	Projectile pour lanceur centrifuge.

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US179054A (en) *		1876-06-20		Improvement in projectiles
FR503198A (fr) *	1917-02-06	1920-06-04	Eugene Andre Francois Naud	Balle perforante en métal homogène
US2868130A (en) *	1953-06-17	1959-01-13	Olin Mathieson	Ammunition
NL175341C (nl) *	1970-10-28	1984-10-16	Eurometaal Nv	Werkwijze voor het samenstellen van een uit een vuurwapen te verschieten kogel met een kern van hard materiaal, alsmede kogel vervaardigd onder toepassing van die werkwijze.

1980
- 1980-12-04 BE BE2/58886A patent/BE886481A/fr not_active IP Right Cessation
1981
- 1981-11-24 EP EP81201299A patent/EP0053421B1/de not_active Expired
- 1981-11-24 DE DE8181201299T patent/DE3165796D1/de not_active Expired
- 1981-11-24 AT AT81201299T patent/ATE9182T1/de active
- 1981-11-30 US US06/326,009 patent/US4445436A/en not_active Expired - Fee Related
- 1981-12-04 IL IL64461A patent/IL64461A/xx unknown

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
FR796149A (fr) *	1934-11-02	1936-03-30		Perfectionnements aux fusils centrifuges
US2043117A (en) *	1934-11-02	1936-06-02	Baden-Powell Baden Fletc Smyth	Centrifugal gun
BE886481A (fr) *	1980-12-04	1981-06-04	Rutten Leon	Projectile pour lanceur centrifuge.

Also Published As

Publication number	Publication date
US4445436A (en)	1984-05-01
ATE9182T1 (de)	1984-09-15
DE3165796D1 (en)	1984-10-04
IL64461A (en)	1987-01-30
BE886481A (fr)	1981-06-04
EP0053421B1 (de)	1984-08-29

Legal Events

Date	Code	Title	Description
1982-04-08	PUAI	Public reference made under article 153(3) epc to a published international application that has entered the european phase	Free format text: ORIGINAL CODE: 0009012
1982-06-09	AK	Designated contracting states	Designated state(s): AT CH DE FR GB IT LI LU NL SE
1982-07-14	17P	Request for examination filed	Effective date: 19820506
1984-04-11	ITF	It: translation for a ep patent filed
1984-06-30	GRAA	(expected) grant	Free format text: ORIGINAL CODE: 0009210
1984-08-29	AK	Designated contracting states	Designated state(s): AT CH DE FR GB IT LI LU NL SE
1984-08-29	REF	Corresponds to:	Ref document number: 9182 Country of ref document: AT Date of ref document: 19840915 Kind code of ref document: T
1984-10-04	REF	Corresponds to:	Ref document number: 3165796 Country of ref document: DE Date of ref document: 19841004
1984-10-26	PGFP	Annual fee paid to national office [announced via postgrant information from national office to epo]	Ref country code: FR Payment date: 19841026 Year of fee payment: 4
1984-10-31	PGFP	Annual fee paid to national office [announced via postgrant information from national office to epo]	Ref country code: CH Payment date: 19841031 Year of fee payment: 4
1984-11-30	PG25	Lapsed in a contracting state [announced via postgrant information from national office to epo]	Ref country code: LU Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 19841130
1984-12-12	PGFP	Annual fee paid to national office [announced via postgrant information from national office to epo]	Ref country code: DE Payment date: 19841212 Year of fee payment: 4
1984-12-31	PGFP	Annual fee paid to national office [announced via postgrant information from national office to epo]	Ref country code: SE Payment date: 19841231 Year of fee payment: 4
1985-06-26	PLBE	No opposition filed within time limit	Free format text: ORIGINAL CODE: 0009261
1985-06-26	STAA	Information on the status of an ep patent application or granted ep patent	Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT
1985-08-28	26N	No opposition filed
1986-10-27	PGFP	Annual fee paid to national office [announced via postgrant information from national office to epo]	Ref country code: AT Payment date: 19861027 Year of fee payment: 6
1986-11-30	PGFP	Annual fee paid to national office [announced via postgrant information from national office to epo]	Ref country code: NL Payment date: 19861130 Year of fee payment: 6
1987-11-24	PG25	Lapsed in a contracting state [announced via postgrant information from national office to epo]	Ref country code: AT Effective date: 19871124
1987-11-25	PG25	Lapsed in a contracting state [announced via postgrant information from national office to epo]	Ref country code: SE Effective date: 19871125
1987-11-30	PG25	Lapsed in a contracting state [announced via postgrant information from national office to epo]	Ref country code: LI Effective date: 19871130 Ref country code: CH Effective date: 19871130
1988-06-01	PG25	Lapsed in a contracting state [announced via postgrant information from national office to epo]	Ref country code: NL Effective date: 19880601
1988-07-18	NLV4	Nl: lapsed or anulled due to non-payment of the annual fee
1988-07-27	GBPC	Gb: european patent ceased through non-payment of renewal fee
1988-07-29	PG25	Lapsed in a contracting state [announced via postgrant information from national office to epo]	Ref country code: FR Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 19880729
1988-07-29	REG	Reference to a national code	Ref country code: CH Ref legal event code: PL
1988-08-02	PG25	Lapsed in a contracting state [announced via postgrant information from national office to epo]	Ref country code: DE Effective date: 19880802
1988-09-23	REG	Reference to a national code	Ref country code: FR Ref legal event code: ST
1988-11-18	PG25	Lapsed in a contracting state [announced via postgrant information from national office to epo]	Ref country code: GB Effective date: 19881118
1995-01-31	EUG	Se: european patent has lapsed	Ref document number: 81201299.5 Effective date: 19880913

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