US3393640A - Emergency firing facility for guns - Google Patents

Emergency firing facility for guns Download PDF

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Publication number
US3393640A
US3393640A US576014A US57601466A US3393640A US 3393640 A US3393640 A US 3393640A US 576014 A US576014 A US 576014A US 57601466 A US57601466 A US 57601466A US 3393640 A US3393640 A US 3393640A
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US
United States
Prior art keywords
capacitor
primer
voltage
energy
impulse
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
US576014A
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English (en)
Inventor
Harnau Hans-Dieter
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
Application filed by Rheinmetall GmbH filed Critical Rheinmetall GmbH
Application granted granted Critical
Publication of US3393640A publication Critical patent/US3393640A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F41—WEAPONS
    • F41A—FUNCTIONAL FEATURES OR DETAILS COMMON TO BOTH SMALLARMS AND ORDNANCE, e.g. CANNONS; MOUNTINGS FOR SMALLARMS OR ORDNANCE
    • F41A19/00—Firing or trigger mechanisms; Cocking mechanisms
    • F41A19/58—Electric firing mechanisms
    • F41A19/60—Electric firing mechanisms characterised by the means for generating electric energy
    • F41A19/61—Inductive generators
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K39/00—Generators specially adapted for producing a desired non-sinusoidal waveform

Definitions

  • the-generator coil would have to be dimensioned so that the energy maximum lies in the' low-resistance region.
  • the voltage is then correspondingly low, amounting to only a vfew volts. In the direction of the high-resistance region the energy decreasesdue tomismatch, whereas the voltage increases until almost the no-'load'level is reached.
  • the impulse generator is used with widely diiering primers for tiring a gun in which various types of ammunition are to be used, it may occur that, for the reasons already given, not all the primers can be initiated with one and the same impulse generator.
  • this problem is solved by using for primers with widely differeing resistances an ICC impulse generator with a maximal voltage rating corresponding to the primer with the highest resistance, and by temporarily storing in a storage capacitor the electric energy generated by the displacement of the core of' the generator and applying it to the primer substantially on or shortly after the termination of current generation.
  • the induction coil of the impulse generator irrespective of the resistance of the primers, with such a high resistance that, with maximal energy, the voltage is considerably higher than in the case of known arrangements, e.g. about 100 volts.
  • the storage capacitor is then charged with this voltage, preferably by way of a rectifier.
  • the rectifier serves at the same time as a blocking element to prevent the capacitor from discharging back through the induction coil.
  • the capacitor voltage may be applied to the primer in various different ways, whereby it is only necessary to ensure that the generation of the impulse is by this time completed so that the capacitor is fully charged. This process can be controlled, for example, as a function of time. In its preferred embodiment, however, the
  • the primer allows the primer to be connected in parallel with the capacitor by way of a switch lwhich may be actuated by the slidably supported core of the impulse generator.
  • This embodiment of the invention is based on the consideration that the generation of the impulse is completed by the time the core inside the impulse generator reaches a certain position. When in this position it is also certain that the capacitor will have been charged to the full voltage. It is therefore advisable to eifect the changeover when the core has reached or passed this position in which it is certain that the capacitor has been charged.
  • a further feature of the invention resides in that a discharging resistor is connected for reasons of safety in parallel with the capacitor so that, when the ignition circuit is open, the capacitor will be discharged again within a few seconds after the generation of an impulse.
  • FIG. 2 shows an embodiment for emergency tiring according to the invention in the form of a circuit diagram.
  • An impulse generator 1 has an induction coil 2 in which the movement of a core 3 causes the generation of electric e-nergy in the for-m of an impulse through the opening of the otherwise closed magnetic circuit of the impulse generator as a result of the movement of the core.
  • a capacitor 4 Connected in parallel with the induction coil 2 is a capacitor 4 which is charged by way of a rectifier 5 while the impulse is generated in the induction coil.
  • a resistor 6 Connected in parallel with the capacitor 4 is a resistor 6 which allows the capacitor to discharge if there is no primer connected to the circuit after the capacitor has been charged.
  • the primer 7 is connected to the remainder of the circuit by way of plug contacts 9 and sockets 10.
  • the primer 7 is replaceable, i.e. following the initiation of one primer, a new primer may be connected to the remainder of the circuit.
  • the closure of a switch 8 for connecting the primer 7 to the circuit takes place in response to the move-ment of the core 3.
  • the core actuates at this instant or shortly afterwards the switch 8, whereby the capacitor discharges by way of the primer 7 and initiates firing.
  • the rectifier 5 prevents any back discharge of the capacitor through the induction coil 2.
  • the energy Wz and maximal volta-ge Uz' for the embodiment of the invention are shown as a function of the resistance Rz of the primer. It may be seen from this representation that the energy Wz applied to the 3 ignition circuit is, irrespective of the resistance of the primer, equal to the maximal energy Wz in the case of the embodiment represented by a curve in FIG. 1, and that the maxi-mal voltage applied to the primer is considerably higher than in the case of the embodiment shown in FIG. 1.
  • the values of both the energy and the voltage may be chosen irrespective of the resistance of the primer by correspondingly dimensioning the induction coil of the impulse generator.
  • an impulse generator 1 with a maximal voltage rating of 100 volts and an energy rating of 70 milliwatt-Seconds was used with a rectifier 5 in the form of a silicon diode type BYX l0, which has a reverse voltage of 800 lvolts, an average ⁇ forward current of 0.2 ampere, and can be loaded with an overload impulse of l5 amperes for a maximal duration of 10 milliseconds and a voltage impulse of up to 1600 volts in the reverse direction.
  • the capacitance of the storage capacitor 4 a mounted to 14 af. and a 100-kilohm resistor served as resistor 6.
  • An electrical emergency firing circuit for supplying an ⁇ electrical current impulse and adapted to be connected with an electrically initiated primer for discharging a firearm, the circuit comprising an electrical energy storing capacitor,
  • rectifier means for blocking fiow of electrical current in one direction therethrough
  • an electrical impulse generator for generating an impulse of at least a predetermined voltage and including an induction coil connected serially through said rectifier means and in parallel ⁇ with said capacitor for conducting thereto an electrical current induced in said coil and further including magnetic structure having a displaceable elem-ent movable linearly relative to said coil for varying the linkage of said coilwith a magnetic field of said magnetic structure and thereby generating an impulse' ow of 'electrical current to charge said capacitor withelectrical energy, L separable electrical connector means ⁇ adapted to be connected with a primer, and normally open switch means actuated in response to completion of linear Imovement of said displaceable element of said generator ⁇ magnetic structure and electrically connecting said capacitor and said rseparable electrical connector means for completing an electrical circuit of said capacitor and said ,connector means and discharging electrical energy stored lbyy 4 lsaid capacitor through a primer connected to said connector means, said switch means closing upon completion of movement of said displaceable element and thereby cooperating therewith to discharge said capacitor

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Ignition Installations For Internal Combustion Engines (AREA)
  • General Induction Heating (AREA)
  • Synchronous Machinery (AREA)
US576014A 1965-09-03 1966-08-30 Emergency firing facility for guns Expired - Lifetime US3393640A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DER41467A DE1291260B (de) 1965-09-03 1965-09-03 Notabfeuerung fuer Geschuetze

Publications (1)

Publication Number Publication Date
US3393640A true US3393640A (en) 1968-07-23

Family

ID=7406365

Family Applications (1)

Application Number Title Priority Date Filing Date
US576014A Expired - Lifetime US3393640A (en) 1965-09-03 1966-08-30 Emergency firing facility for guns

Country Status (6)

Country Link
US (1) US3393640A (instruction)
BE (1) BE686046A (instruction)
DE (1) DE1291260B (instruction)
GB (1) GB1105991A (instruction)
NL (1) NL147255B (instruction)
NO (1) NO117903B (instruction)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3500086A (en) * 1966-02-05 1970-03-10 Max Baermann Magneto - electric pulse generator especially for igniting gas-operated devices
US4421029A (en) * 1980-08-02 1983-12-20 Diehl Gmbh & Co. Supply circuit for a load which is to be continually supplied within a projectile
US4440063A (en) * 1982-01-13 1984-04-03 The United States Of America As Represented By The Secretary Of The Army Gun operated electrical firing device
US4567828A (en) * 1984-03-14 1986-02-04 The United States Of America As Represented By The Secretary Of The Army Bomb safety device

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2234335B (en) * 1980-07-07 1991-06-26 Marconi Co Ltd Systems for firing propellant charges

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2313101A (en) * 1940-01-10 1943-03-09 Hercules Powder Co Ltd Blasting machine
US2395600A (en) * 1943-04-14 1946-02-26 Weisglass Louis Means to ignite photographic flash lamps
US2740339A (en) * 1951-06-06 1956-04-03 Melville J Carter Photo-flash unit
US3035520A (en) * 1955-01-24 1962-05-22 Robert E Koeppen Inertia actuated electric unit
US3037148A (en) * 1962-05-29 Ignition systems for internal

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1012361B (de) * 1952-10-16 1957-07-18 Wasagchemie Ag Tragbare elektrische Zuendmaschine
US2825863A (en) * 1954-10-18 1958-03-04 Krupen Philip Energizer
NL257675A (instruction) * 1959-11-06

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3037148A (en) * 1962-05-29 Ignition systems for internal
US2313101A (en) * 1940-01-10 1943-03-09 Hercules Powder Co Ltd Blasting machine
US2395600A (en) * 1943-04-14 1946-02-26 Weisglass Louis Means to ignite photographic flash lamps
US2740339A (en) * 1951-06-06 1956-04-03 Melville J Carter Photo-flash unit
US3035520A (en) * 1955-01-24 1962-05-22 Robert E Koeppen Inertia actuated electric unit

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3500086A (en) * 1966-02-05 1970-03-10 Max Baermann Magneto - electric pulse generator especially for igniting gas-operated devices
US4421029A (en) * 1980-08-02 1983-12-20 Diehl Gmbh & Co. Supply circuit for a load which is to be continually supplied within a projectile
US4440063A (en) * 1982-01-13 1984-04-03 The United States Of America As Represented By The Secretary Of The Army Gun operated electrical firing device
US4567828A (en) * 1984-03-14 1986-02-04 The United States Of America As Represented By The Secretary Of The Army Bomb safety device

Also Published As

Publication number Publication date
NL6612212A (instruction) 1967-03-06
GB1105991A (en) 1968-03-13
BE686046A (instruction) 1967-02-01
NL147255B (nl) 1975-09-15
DE1291260B (de) 1969-03-20
NO117903B (instruction) 1969-10-06

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