US3888157A - Circuit arrangement for weapons used in arming airplanes, particularly turret guns - Google Patents

Circuit arrangement for weapons used in arming airplanes, particularly turret guns Download PDF

Info

Publication number
US3888157A
US3888157A US366163A US36616373A US3888157A US 3888157 A US3888157 A US 3888157A US 366163 A US366163 A US 366163A US 36616373 A US36616373 A US 36616373A US 3888157 A US3888157 A US 3888157A
Authority
US
United States
Prior art keywords
monoflop
gate
firing
relay
circuit arrangement
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
US366163A
Other languages
English (en)
Inventor
Ludwig Vorgrimler
Klaus Vorgrimler
Franz Stritt
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.)
KUKA AG
Original Assignee
Industrie Werke Karlsruhe Ausburg AG
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 Industrie Werke Karlsruhe Ausburg AG filed Critical Industrie Werke Karlsruhe Ausburg AG
Application granted granted Critical
Publication of US3888157A publication Critical patent/US3888157A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

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
    • F41A19/64—Electric firing mechanisms for automatic or burst-firing mode

Definitions

  • a slow-pickup relay attracts, after a predetermined time, to close a relay contact which supplies a triggering pulse to a first monoflop which, in turn, generates an output pulse of defined duration.
  • This pulse arrives through a first gate at a second monofiop and from the second monoflop to an output amplifier in which the pulse is amplified to the magnitude required to ignite a loaded cartridge.
  • a firing relay included in the ignition circuit, is not activated, a flip-flop which is switched by a hand loading key supplies the pulse through a second gate to the second monoflop to trigger the latter.
  • the second gate conjointly with an inverter, prevents hand loading with the firing relay activated.
  • the slow pickup relay is activated after a time of about 300 m sec., and the first monoflop has a holding time of about 200 m sec.
  • This invention relates to a circuit arrangement for loading electrically ignitable cartridges into weapons used to arm airplanes, such as turret guns, by using electronic components which are stable in a defined state, assume a metastable state responsive to a triggering pulse and for the duration of a predetermined holding time, and then flip back into the stable state at the expiration of the holding time, such electronic components comprising, for example, monoflops (monostable multivibrator).
  • Control devices of this type which assure only the possibility of a single loading of the wepon, can be built and used without complications.
  • the safety of the weapon is to be increased, with the same probability of misfiring of the cartridges, an arrangement for multiple loading is required.
  • this presents difficulties. particularly because the rate of operation of the loading mechanisms differs considerably from the firing rate of the weapon, for reasons of cost and weight.
  • the firing rate is about 33.3 msec. [,800 rounds/min. while the considerably lighter loading device can achieve a firing rate of 7.5 msec. or 8,000 loadings/min.
  • the object of the invention is to improve the presently known circuit arrangements by using particularly electronic components which are stable in a defined state, assume a metastable state responsive to a triggering pulse and for the duration of a holding time, and flip back into the stable state after expiration of the holding time.
  • Typical examples of such electronic components are monostable vibrators, hereinafter referred to as monoflops.
  • a slow pickup relay is activated after a predetermined time interval, and closes a contact which supplies a triggering pulse to a first monoflop which generates an output pulse of a defined duration.
  • This output pulse is supplied through a first OR gate to a second monoflop and from the second monoflop to an output or terminal amplifier in which the pulse is amplified to the magnitude required to ignite the cartridge.
  • a flip flop when the firing relay is not activated a flip flop, switched by a hand loading" key, supplies a pulse through a second gate and the first OR gate to the second monoflop so that the latter is triggered and both monoflops conjointly prevent hand loading with the firing relay activated.
  • Another switching means is provided and, together with known filters arranged in the output amplifier, prevents a wrong output pulse when a source of electric potential is connected to the circuit.
  • additional features are provided so that the slow pickup relay is activated after a time lapse of about 300 msec., and the first monoflop has a holding time of about 200 msec.
  • the present invention is further supplemented and improved by another feature in accordance with which the switching means preventing a wrong impulse, together with the filters arranged in the output amplifier, when a source of electric potential is connected to the circuit, is in the form of an additional gate including an inverter.
  • the present invention results in a number of marked advantages.
  • the circuit arrangement embodying the present invention opens up, additionally, the possibility of multiple loading and thus assures a far greater safety of the weapon provided with the invention circuit.
  • modern electronic switching means as are available in the form of known flip-flops and monoflops, the limits of conventional relays, with relatively slow switching times, are exceeded.
  • contact chatter, contact wear, etc. are avoided.
  • An object of the invention is to keep the rate of operation ofa loading mechanism indenpendent of the rate of operation of the associated weapon.
  • Another object of the invention is to provide an improvement in known circuit arrangements for loading and firing weapons designed for use on airplanes. particularly turret guns.
  • a further object of the invention is to provide an improved circuit arrangement of the type mentioned and which avoids the disadvantages of conventional relays.
  • FIG. 1 is a circuit diagram of a conventional weapon loading device as supplemented by a circuit arrangement embodying the invention as included in the area outlined by chain lines;
  • FIG. 2 is a graphical illustration of the timedependent behavior of a slow pickup relay as well as the time-dependent behavior of two monoflops.
  • a source of electric potential preferably a 24v source.
  • a firing contact or trigger is illustrated at 3 and a Slow acting relay, such as a slow pickup relay, is illus trated at 4.
  • the firing relay controlled by trigger 3 is indicated at 5, and 21 rounds counter is indicated at 6.
  • the conventional circuit further includes a breech block contact 8, a barrel contact 9 and a counting contact 10.
  • a loading cartridge 11 is provided to load cartridges 12 into the weapon, and a hand loading control I3 is further provided.
  • An ohmmeter is indicated at 14 and a three step-switch is indicated at 15.
  • a rate of fire switch 16 is provided to control the firing rate.
  • a loading switch 17 is in circuit with slow acting relay 4, and filter sections. each comprising a resistor and capacitor in parallel. constituting a typical R-C filter. are indicated at [8 and 19.
  • the terminals 20, associated with the firing button 3. are provided for connection of a remote control. and a rate of fire meter may be connected to the terminals 21 associated with the rounds counter 6.
  • Various connecting plugs are indicated generally at 22, with protective resistors being indicated at 23 and 24.
  • Relay 4 controls a contact 25.
  • firing relay 5 With firing relay 5 not activated the output pulse of a flip-flop FFI, switched by the hand loading key 13, can arrive. through gate G2 and gate G3, at monoflop MF2 so that the latter is likewise triggered.
  • Gate G2, with inverter G1. prevents hand loading with firing relay 5 activated. It will be noted that a contact of firing relay 5 is connected through inverter G1 to gate G2, and that monoflop MF2 is connected to amplifier EV through gate G4 and inverter GS.
  • Gate G4 and inverter G5 in cooperation with known filters which have not been shown and which are arranged in output amplifier EV. prevent an error pulse or wrong pulse when the source of electric potential is connected to input terminals l, or when RF influences occur due to contact chattering of one of the external contacts or relay contacts.
  • FIG. 2 graphically illustrates the timedependent operation of slow-acting relay 4, in hand loading by means of firing contact 13. as well as the corresponding time-dependent operation of monoflops MFl and MF2.
  • firing relay 5 is activated and gate G2 closed.
  • the area .t denotes the activation of slow-acting relay 4 300 msec. after the last interruption of the ignition current
  • .rx denotes the activation of relay 4 after the loading and the first interruption of the ignition current.
  • the areas and . ⁇ '.r symbolize the chatter of the contacts.
  • the delay time of 300 msec. provided for relay 4 is an empirical value. After such a time. ignition of the cartridge is practically impossible.
  • a circuit arrangement for loading electrically ignitable cartridges for weapons. particularly turret guns. destined for arming airplanes. and utilizing electronic components which are stable in a defined state assume a metastable state, for the duration of a holding time. responsive to a triggering pulse. and flip back into the stable state at the expiration of the holding time.
  • the improvement comprising. in combination, input terminals for connection to a source of electric potential; firing means actuable to establish a cartridge ignition circuit connected to said input terminals; a slow-acting relay energized from said source upon establishment of said ignition circuit and, after a predetermined time following interruption of the ignition circuit. with the weapon remaining inactive despite actuation of said firing means.
  • said firing means includes a firing contact and a firing relay energized responsive to closure of said firing contact; a flip-flop having an output connected to the input of said second monoflop; and a hand loading switch operable, when said firing relay is not energized, to switch said flip-flop to supply an output pulse to said second monoflop to trigger said second monoflop to supply an output pulse to said amplifier.
  • the improvement claimed in claim 2 including gate means connecting said firing relay and said flip-flop to said first gate and operable, in conjunction with said first and second monoflops, when said firing relay is not energized. to prevent hand loading by operation of said hand loading key.
  • the improvement claimed in claim 3 including switching means connected between said second monoflop and said amplifier and including filters arranged in said amplifier, operable to prevent error pulses when a source of electric potential is connected to said input terminals.
  • said gate means comprises a second gate connecting said flip-flop to said first gate; and a third gate connecting said firing relay to said second gate.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Electronic Switches (AREA)
  • Relay Circuits (AREA)
  • Keying Circuit Devices (AREA)
US366163A 1972-06-02 1973-06-01 Circuit arrangement for weapons used in arming airplanes, particularly turret guns Expired - Lifetime US3888157A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE2226760A DE2226760C3 (de) 1972-06-02 1972-06-02 Schaltungsanordnung für der Bewaffnung von Luftfahrzeugen dienenden Kanonen, insbesondere Revolver-Kanonen

Publications (1)

Publication Number Publication Date
US3888157A true US3888157A (en) 1975-06-10

Family

ID=5846564

Family Applications (1)

Application Number Title Priority Date Filing Date
US366163A Expired - Lifetime US3888157A (en) 1972-06-02 1973-06-01 Circuit arrangement for weapons used in arming airplanes, particularly turret guns

Country Status (8)

Country Link
US (1) US3888157A (cs)
JP (1) JPS4943497A (cs)
CA (1) CA994895A (cs)
CH (1) CH549776A (cs)
DE (1) DE2226760C3 (cs)
FR (1) FR2186640B1 (cs)
GB (1) GB1426225A (cs)
IT (1) IT988898B (cs)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4960033A (en) * 1988-12-27 1990-10-02 Electro-Tech, Inc. Gun firing relay circuit

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR3012593B1 (fr) * 2013-10-25 2016-05-13 Nexter Systems Procede de commande de tir d'une arme a feu a emprunt de gaz et dispositif mettant en oeuvre un tel procede

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3103851A (en) * 1961-04-13 1963-09-17 Robert A Rosenblum Charger for a gun
US3440926A (en) * 1967-12-04 1969-04-29 Trw Inc Control circuitry for automatically operated guns

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3103851A (en) * 1961-04-13 1963-09-17 Robert A Rosenblum Charger for a gun
US3440926A (en) * 1967-12-04 1969-04-29 Trw Inc Control circuitry for automatically operated guns

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4960033A (en) * 1988-12-27 1990-10-02 Electro-Tech, Inc. Gun firing relay circuit

Also Published As

Publication number Publication date
GB1426225A (en) 1976-02-25
JPS4943497A (cs) 1974-04-24
IT988898B (it) 1975-04-30
CA994895A (en) 1976-08-10
DE2226760A1 (de) 1973-12-13
FR2186640A1 (cs) 1974-01-11
FR2186640B1 (cs) 1977-12-30
CH549776A (de) 1974-05-31
DE2226760C3 (de) 1975-10-23
DE2226760B2 (de) 1975-03-06

Similar Documents

Publication Publication Date Title
US2675638A (en) Fire control for firearms
US3208181A (en) Electrically controlled firearm utilizing a piezo-electric crystal
US2930288A (en) Tandem rocket launcher and firing system
US3453496A (en) Fire control intervalometer
US2832265A (en) Squib firing intervalometer
US3580113A (en) Electrical ignition firearm, with a forwardly sliding barrel
US5335598A (en) Timing and firing circuitry
US2442766A (en) Circuit controlling switch
US3888157A (en) Circuit arrangement for weapons used in arming airplanes, particularly turret guns
US3571605A (en) Intervalometer for an illumination system
US2968222A (en) Rockets carried in clusters by a launching machine and in particular by an aircraft
US4416631A (en) Small arms firing effects simulator
US3967530A (en) Device for controlling the firing current of a quick-firing weapon
EP0369665A2 (en) Electrical timing arrangements and methods
US2448024A (en) Machine gun firing rate control mechanism
US3930449A (en) Time delay initiator
GB2023778A (en) Latch devices
US3228333A (en) Electrically actuated cartridge
US2509910A (en) Time-delay circuit
GB752153A (en) Improvements in self-propelled projectiles
US2750848A (en) Double feed prevention device
US2961583A (en) Detonator circuit for permissive explosion shot firer
US2873679A (en) Ordnance fuze firing circuit
SU1495581A1 (ru) Система дл автоматического управлени розжигом горелки
US2410767A (en) Automatic machine gun charger