US20070074625A1 - Method and device for setting the fuse and/or correcting the ignition time of a projectile - Google Patents
Method and device for setting the fuse and/or correcting the ignition time of a projectile Download PDFInfo
- Publication number
- US20070074625A1 US20070074625A1 US11/436,327 US43632706A US2007074625A1 US 20070074625 A1 US20070074625 A1 US 20070074625A1 US 43632706 A US43632706 A US 43632706A US 2007074625 A1 US2007074625 A1 US 2007074625A1
- Authority
- US
- United States
- Prior art keywords
- projectile
- fuse
- velocity
- chip
- current
- 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.)
- Abandoned
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F42—AMMUNITION; BLASTING
- F42C—AMMUNITION FUZES; ARMING OR SAFETY MEANS THEREFOR
- F42C17/00—Fuze-setting apparatus
- F42C17/04—Fuze-setting apparatus for electric fuzes
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F42—AMMUNITION; BLASTING
- F42C—AMMUNITION FUZES; ARMING OR SAFETY MEANS THEREFOR
- F42C11/00—Electric fuzes
- F42C11/06—Electric fuzes with time delay by electric circuitry
- F42C11/065—Programmable electronic delay initiators in projectiles
Definitions
- the invention concerns a method and a device for programming a time-fuse projectile or for correcting an ignition time of a projectile fired from a weapon.
- EP 0 918 209 B1 discloses a projectile with programmable time fuses.
- a method and a device for programming time fuses of projectiles are also described in EP 0 769 673 B1.
- a predetermined muzzle velocity of the projectile and a predetermined distance to a target are used.
- DE 38 35 656 A1 discloses a method for correcting the ignition point and a circuit configuration for carrying out this method.
- the device measures the actual projectile velocity profile with respect to time only for a specific period of time after firing. The further velocity profile of the projectile is then extrapolated. When the distance of flight determined in this way reaches a desired value, the detonation is triggered.
- CH 691 143 A5 discloses a device for measuring projectile velocity at the muzzle of the barrel of a high-cadence cannon.
- the device has two sensors that are spaced a certain distance apart on a support tube.
- the sensors respond to changes in magnetic flux and are connected to evaluation electronics.
- each sensor has a pair of coils and a closed magnetic circuit.
- the measured projectile velocity or the fuse set time updated with it is then also supplied as information to the projectile, generally before the projectile leaves the muzzle area.
- the above device is distinguished by a high degree of accuracy, it is subject to mechanical and thermodynamic stresses, since the measuring and programming units are exposed, among other things, to the muzzle gases.
- the object of the invention is to provide a device or an improved programming system that is no longer exposed to mechanical and thermodynamic wear.
- one aspect of the present invention resides in a method for setting a fuse and/or correcting ignition time of a projectile fired from a weapon.
- the method includes the steps of measuring current projectile velocity, computing true muzzle velocity of the projectile during passage through a cannon tube based on the current projectile velocity, and adjusting and/or correcting a fuse set time of the fuse based on the computed muzzle velocity.
- a device for setting the fuse and/or correcting the ignition of the projectile which device includes as transmitter/receiver and a fire control system arranged at the weapon and a chip and a timer arranged at the projectile.
- the chip is connected to the timer and an output of the timer is connect with a fuse or an ignition device of the projectile.
- the projectile with a computing and/or correction unit. In this case the chip would be connected to the computing and connecting unit and the timer, while the output of the computing and/or correction unit is also connected to the timer.
- the invention is based on the idea of integrating a microwave transmitter, preferably operating in the GHz range, in the system while at the same time preserving the advantages of measurement of the muzzle velocity and of a current compensated fuse setting.
- This microwave transmitter transmits the current fuse setting, for example, as determined by a fire control computer, to the ammunition, e.g., a projectile.
- a direct measurement of the actual muzzle velocity can be dispensed with, since the real muzzle velocity is determined by information of the current flight velocity of the projectile, i.e., it is extrapolated back from this.
- the ignition time which was preset with the ignition time of the projectile using a standard muzzle velocity, is corrected and used as the current fuse set time.
- the flight velocity is measured, for example, by means of the Doppler shift of the transmitting frequencies, preferably at the projectile end. To this end, the transmitting frequency is fixed, and the deviation is measured. Since the time that the projectile has been traveling is known, the current flight velocity can be determined, and, in addition, the real muzzle velocity of the projectile, which the projectile had at the time it was fired through the muzzle area, can be computed. The current fuse set time is then determined from this data and made available to the projectile.
- the ammunition or the projectile contains a chip for the programming, for example, an RFID (radio frequency identification) chip (see http://de.wikipedia.org/wiki/RFID).
- RFID radio frequency identification
- the chip can be programmed by the fire control unit with, among other things, the current standard fuse setting and with a correction value or a value that is not determined until during the flight of the projectile.
- the timer present on the ammunition (or in the ammunition) can then be counted down to zero over the (remaining) flight distance and can then bring about the desired disintegration before a target.
- the computed muzzle velocity can also be transmitted back if this computation is made in the projectile to allow any deviations that may arise to be taken into account in the fire control system.
- the microwave transmitter that is used can be locally mounted on the cannon where it is not exposed to either muzzle gases or mechanical stresses.
- the transmitter/receiver is electrically supplied by the electrical system of the cannon and is supplied with data of the fire control system. Any data transmitted back from the ammunition can be retransmitted to the fire control system, which can then take it into account.
- the single FIGURE is a schematic representation of the invention.
- the sole drawing shows a programming system 1 or a generalized device for a time-fuse projectile 2 or a time-fuse piece of ammunition (etc.).
- a programmable chip 3 for example, an RFID chip, is located on board the projectile 2 and preferably also contains the receiving and transmitting circuit and memory.
- a timer 4 present in the projectile 2 is also supplied by this chip 3 with the necessary time information on the spot. Parallel to this, the chip 3 is connected with a computing and/or correction unit 5 if such a unit is provided in the projectile 2 . This unit 5 is then also connected with the timer 4 .
- a fuse 6 is functionally connected with the output of the timer 4 .
- the power supply to these units of the projectile 2 can be provided by microwave radiation X.
- a conventional power supply for example, a battery that can be activated (not shown).
- the programming system 1 On the cannon or weapon end 10 , the programming system 1 , which is preferably mounted on the cannon tube 11 , has a transmitter/receiver 12 for data transmission to the projectile 2 .
- This transmitter/receiver 12 is electrically connected with a fire control system or fire control computer 13 present in the weapon control system.
- the programming system operates in the following way:
- the current disintegration time which is computed on the basis of the standard velocity of the projectile 2 , is transmitted to the projectile.
- the deviation from the standard velocity is determined in the projectile by the Doppler method.
- the current disintegration time is computed in the projectile 2 or from the cannon end.
- a correction of the fuse set time for the fuse 6 can be performed at the projectile end, in which case the timer 4 is supplied with this information.
- the correction that has been made and the back-computed muzzle velocity that has been determined can be transmitted via microwave radiation X to the transmitter/receiver 12 on the cannon 10 and made available to a fire control system (not shown).
- the desired value of the fuse time (flight time) based on the true muzzle velocity of the projectile 2 upon firing is transmitted to the projectile via the microwave radiation X.
- This fuse set time is corrected and used as the new fuse set time in the projectile 2 .
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Aiming, Guidance, Guns With A Light Source, Armor, Camouflage, And Targets (AREA)
- Radar Systems Or Details Thereof (AREA)
- Heat Treatment Of Articles (AREA)
- Fuses (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
Abstract
Description
- The invention concerns a method and a device for programming a time-fuse projectile or for correcting an ignition time of a projectile fired from a weapon.
- Various time programmings for ammunition are known. The fuses are set either manually outside the loading chamber before the projectile is fired or electrically in the loading chamber by ignition electronics. The latter type of fuse setting is described, for example, in DE 101 52 862 A1.
- A method and a device for transmitting information to programmable projectiles are described in EP 0 992 762 B1.
- A method for correcting the preprogrammed triggering of a process in a spin-stabilized projectile and a device for carrying out this method are described in EP 0 992 761 B1.
- EP 0 918 209 B1 discloses a projectile with programmable time fuses.
- A method and a device for programming time fuses of projectiles are also described in EP 0 769 673 B1. To compute a disintegration time, a predetermined muzzle velocity of the projectile and a predetermined distance to a target are used.
- DE 38 35 656 A1 discloses a method for correcting the ignition point and a circuit configuration for carrying out this method. The device measures the actual projectile velocity profile with respect to time only for a specific period of time after firing. The further velocity profile of the projectile is then extrapolated. When the distance of flight determined in this way reaches a desired value, the detonation is triggered.
- CH 691 143 A5 discloses a device for measuring projectile velocity at the muzzle of the barrel of a high-cadence cannon. The device has two sensors that are spaced a certain distance apart on a support tube. The sensors respond to changes in magnetic flux and are connected to evaluation electronics. In this regard, each sensor has a pair of coils and a closed magnetic circuit. The measured projectile velocity or the fuse set time updated with it is then also supplied as information to the projectile, generally before the projectile leaves the muzzle area.
- Although the above device is distinguished by a high degree of accuracy, it is subject to mechanical and thermodynamic stresses, since the measuring and programming units are exposed, among other things, to the muzzle gases.
- The object of the invention is to provide a device or an improved programming system that is no longer exposed to mechanical and thermodynamic wear.
- Pursuant to this object, and others which will become apparent hereafter, one aspect of the present invention resides in a method for setting a fuse and/or correcting ignition time of a projectile fired from a weapon. The method includes the steps of measuring current projectile velocity, computing true muzzle velocity of the projectile during passage through a cannon tube based on the current projectile velocity, and adjusting and/or correcting a fuse set time of the fuse based on the computed muzzle velocity.
- Another aspect of the invention resides in a device for setting the fuse and/or correcting the ignition of the projectile, which device includes as transmitter/receiver and a fire control system arranged at the weapon and a chip and a timer arranged at the projectile. The chip is connected to the timer and an output of the timer is connect with a fuse or an ignition device of the projectile. It is further possible to provide the projectile with a computing and/or correction unit. In this case the chip would be connected to the computing and connecting unit and the timer, while the output of the computing and/or correction unit is also connected to the timer.
- The invention is based on the idea of integrating a microwave transmitter, preferably operating in the GHz range, in the system while at the same time preserving the advantages of measurement of the muzzle velocity and of a current compensated fuse setting. This microwave transmitter transmits the current fuse setting, for example, as determined by a fire control computer, to the ammunition, e.g., a projectile. A direct measurement of the actual muzzle velocity can be dispensed with, since the real muzzle velocity is determined by information of the current flight velocity of the projectile, i.e., it is extrapolated back from this. On the basis of this current projectile velocity, the ignition time, which was preset with the ignition time of the projectile using a standard muzzle velocity, is corrected and used as the current fuse set time.
- The flight velocity is measured, for example, by means of the Doppler shift of the transmitting frequencies, preferably at the projectile end. To this end, the transmitting frequency is fixed, and the deviation is measured. Since the time that the projectile has been traveling is known, the current flight velocity can be determined, and, in addition, the real muzzle velocity of the projectile, which the projectile had at the time it was fired through the muzzle area, can be computed. The current fuse set time is then determined from this data and made available to the projectile.
- If there is a deviation from a preprogrammed standard fuse setting, a correction is then made in the ammunition or by the fire control system, which then reflects the current fuse set time.
- The ammunition or the projectile contains a chip for the programming, for example, an RFID (radio frequency identification) chip (see http://de.wikipedia.org/wiki/RFID). This chip has the preferred property that it can be supplied with energy by microwave energy.
- In addition, an advantage is obtained from the fact that the chip can be programmed by the fire control unit with, among other things, the current standard fuse setting and with a correction value or a value that is not determined until during the flight of the projectile.
- The timer present on the ammunition (or in the ammunition) can then be counted down to zero over the (remaining) flight distance and can then bring about the desired disintegration before a target.
- In addition, the computed muzzle velocity can also be transmitted back if this computation is made in the projectile to allow any deviations that may arise to be taken into account in the fire control system.
- This system eliminates the previously known expensive measuring and programming unit in the cannon or cannon tube. The microwave transmitter that is used can be locally mounted on the cannon where it is not exposed to either muzzle gases or mechanical stresses. The transmitter/receiver is electrically supplied by the electrical system of the cannon and is supplied with data of the fire control system. Any data transmitted back from the ammunition can be retransmitted to the fire control system, which can then take it into account.
- The invention is explained in greater detail below with reference to the specific embodiment illustrated in the drawing.
- The single FIGURE is a schematic representation of the invention.
- The sole drawing shows a
programming system 1 or a generalized device for a time-fuse projectile 2 or a time-fuse piece of ammunition (etc.). - A
programmable chip 3, for example, an RFID chip, is located on board theprojectile 2 and preferably also contains the receiving and transmitting circuit and memory. Atimer 4 present in theprojectile 2 is also supplied by thischip 3 with the necessary time information on the spot. Parallel to this, thechip 3 is connected with a computing and/orcorrection unit 5 if such a unit is provided in theprojectile 2. Thisunit 5 is then also connected with thetimer 4. A fuse 6 is functionally connected with the output of thetimer 4. - The power supply to these units of the
projectile 2 can be provided by microwave radiation X. Another, preferred possibility is a conventional power supply, for example, a battery that can be activated (not shown). - On the cannon or
weapon end 10, theprogramming system 1, which is preferably mounted on thecannon tube 11, has a transmitter/receiver 12 for data transmission to theprojectile 2. This transmitter/receiver 12 is electrically connected with a fire control system orfire control computer 13 present in the weapon control system. - The programming system operates in the following way:
- The current disintegration time, which is computed on the basis of the standard velocity of the
projectile 2, is transmitted to the projectile. The deviation from the standard velocity is determined in the projectile by the Doppler method. On the basis of the deviation, the current disintegration time is computed in theprojectile 2 or from the cannon end. - If this operation is carried out in the
projectile 2 by the computing and/orcorrection unit 5, then a correction of the fuse set time for the fuse 6 can be performed at the projectile end, in which case thetimer 4 is supplied with this information. The correction that has been made and the back-computed muzzle velocity that has been determined can be transmitted via microwave radiation X to the transmitter/receiver 12 on thecannon 10 and made available to a fire control system (not shown). - On the other hand, if the current projectile velocity is transmitted to the transmitter/
receiver 12 of thecannon 10, and if the correction is carried out at the cannon end in thefire control system 13, then the desired value of the fuse time (flight time) based on the true muzzle velocity of the projectile 2 upon firing is transmitted to the projectile via the microwave radiation X. This fuse set time is corrected and used as the new fuse set time in theprojectile 2. - Although the present invention ahs been described in relation to particular embodiments thereof, many other variations and modifications and other uses will become more apparent to those skilled in the art. It is preferred, therefore, that the present invention be limited not by the specific disclosure herein, but only by the appended claims.
Claims (11)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DEDE102005024179.4 | 2005-05-23 | ||
DE102005024179A DE102005024179A1 (en) | 2005-05-23 | 2005-05-23 | Method and device for temping and / or correction of the ignition timing of a projectile |
Publications (1)
Publication Number | Publication Date |
---|---|
US20070074625A1 true US20070074625A1 (en) | 2007-04-05 |
Family
ID=35901540
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US11/436,327 Abandoned US20070074625A1 (en) | 2005-05-23 | 2006-05-18 | Method and device for setting the fuse and/or correcting the ignition time of a projectile |
Country Status (9)
Country | Link |
---|---|
US (1) | US20070074625A1 (en) |
EP (1) | EP1726911B1 (en) |
JP (1) | JP5005954B2 (en) |
AT (1) | ATE506594T1 (en) |
CA (1) | CA2545300A1 (en) |
DE (2) | DE102005024179A1 (en) |
DK (1) | DK1726911T3 (en) |
ES (1) | ES2365039T3 (en) |
ZA (1) | ZA200604101B (en) |
Cited By (20)
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US20080211710A1 (en) * | 2006-12-08 | 2008-09-04 | Henry Frick | Method for measuring the muzzle velocity of a projectile or the like |
WO2009105038A1 (en) * | 2008-02-18 | 2009-08-27 | Advanced Material Engineering Pte Ltd. | In-flight programming of trigger time of a projectile |
US20090289619A1 (en) * | 2008-05-21 | 2009-11-26 | Rheinmetall Air Defence Ag | Apparatus and method for measurement of the muzzle velocity of a projectile or the like |
US20100308152A1 (en) * | 2009-06-08 | 2010-12-09 | Jens Seidensticker | Method for correcting the trajectory of terminally guided ammunition |
US8020491B2 (en) | 2007-02-12 | 2011-09-20 | Krauss-Maffei Wegmann Gmbh & Co. | Method and apparatus for defending against airborne ammunition |
US20120024141A1 (en) * | 2008-10-17 | 2012-02-02 | Rheinmetall Landsysteme Gmbh | Weapon system with a carrier vehicle and a preferably vehicle dependent mortar |
US20120125092A1 (en) * | 2010-11-22 | 2012-05-24 | DRS Technologies Canada, Ltd | Muzzle velocity sensor |
CN102620603A (en) * | 2012-03-31 | 2012-08-01 | 中国人民解放军***72465部队 | Installation structure of initial-speed measuring coils and time setting coil of air-defense antiaircraft gun muzzle |
US8558151B2 (en) | 2010-01-15 | 2013-10-15 | Rheinmetall Air Defence Ag | Method for correcting the trajectory of a projectile, in particular of a terminal phase-guided projectile, and projectile for carrying out the method |
US20140060298A1 (en) * | 2011-04-19 | 2014-03-06 | Rheinmetall Air Defence Ag | Apparatus and method for programming a projectile |
US8707846B2 (en) | 2008-11-06 | 2014-04-29 | Rheinmetall Waffe Munition Gmbh | Weapon with recoil and braking device, damping this recoil |
US8746119B2 (en) | 2010-02-01 | 2014-06-10 | Rheinmetall Air Defence Ag | Method and device for programming a projectile |
US8794120B2 (en) | 2008-11-06 | 2014-08-05 | Rheinmetall Waffe Munition Gmbh | Mortar |
US8984999B2 (en) | 2010-02-01 | 2015-03-24 | Rheinmetall Air Defence Ag | Programmable ammunition |
WO2015107370A1 (en) * | 2014-01-20 | 2015-07-23 | Bae Systems Plc | Fuze setting apparatus |
EP3208569A1 (en) * | 2016-02-16 | 2017-08-23 | BAE Systems PLC | Activating a fuse |
WO2017141007A1 (en) * | 2016-02-16 | 2017-08-24 | Bae Systems Plc | Activating a fuse |
WO2017195967A1 (en) * | 2016-05-12 | 2017-11-16 | 주식회사 한국계측기기연구센터 | Correction apparatus and correction method for muzzle velocity measuring doppler radar equipment |
US20200116465A1 (en) * | 2016-02-16 | 2020-04-16 | Bae Systems Plc | Fuse system for projectile |
CN118066954A (en) * | 2024-04-25 | 2024-05-24 | 江西红声技术有限公司 | Electronic fuze testing method, system, readable storage medium and computer equipment |
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DE102007007404A1 (en) | 2007-02-12 | 2008-08-14 | Krauss-Maffei Wegmann Gmbh & Co. Kg | Method and device for remote release of a projectile |
DE102007044732A1 (en) * | 2007-09-18 | 2009-04-02 | Oerlikon Contraves Ag | Method and device for increasing the accuracy of a particular timed ammunition breakdown |
DE102009011447B9 (en) * | 2009-03-03 | 2012-08-16 | Diehl Bgt Defence Gmbh & Co. Kg | Method for igniting a warhead of a grenade and vehicle |
JP5979022B2 (en) * | 2012-01-27 | 2016-08-24 | ダイキン工業株式会社 | Ammo actuation system |
DE102012022894A1 (en) * | 2012-11-23 | 2014-05-28 | Gabriele Lisa Trinkel | System for identification, verification and/or authentication of projectile e.g. railgun projectile, has sensor, communication unit, processing unit and power supply or power generation unit which are arranged in housing of projectile |
DE102013007229A1 (en) | 2013-04-26 | 2014-10-30 | Rheinmetall Waffe Munition Gmbh | Method for operating a weapon system |
KR102124083B1 (en) * | 2018-12-21 | 2020-06-17 | 주식회사 한화 | Apparatus and method for controlling safety time of electronic fuse using turbine generator |
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-
2005
- 2005-05-23 DE DE102005024179A patent/DE102005024179A1/en not_active Withdrawn
-
2006
- 2006-02-01 DK DK06002014.6T patent/DK1726911T3/en active
- 2006-02-01 AT AT06002014T patent/ATE506594T1/en active
- 2006-02-01 EP EP06002014A patent/EP1726911B1/en not_active Not-in-force
- 2006-02-01 DE DE502006009327T patent/DE502006009327D1/en active Active
- 2006-02-01 ES ES06002014T patent/ES2365039T3/en active Active
- 2006-04-28 CA CA002545300A patent/CA2545300A1/en not_active Abandoned
- 2006-05-18 US US11/436,327 patent/US20070074625A1/en not_active Abandoned
- 2006-05-19 JP JP2006140346A patent/JP5005954B2/en not_active Expired - Fee Related
- 2006-05-22 ZA ZA200604101A patent/ZA200604101B/en unknown
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Also Published As
Publication number | Publication date |
---|---|
EP1726911A1 (en) | 2006-11-29 |
DK1726911T3 (en) | 2011-08-01 |
ZA200604101B (en) | 2007-02-28 |
CA2545300A1 (en) | 2006-11-23 |
JP2006329616A (en) | 2006-12-07 |
JP5005954B2 (en) | 2012-08-22 |
EP1726911B1 (en) | 2011-04-20 |
ES2365039T3 (en) | 2011-09-21 |
DE102005024179A1 (en) | 2006-11-30 |
ATE506594T1 (en) | 2011-05-15 |
DE502006009327D1 (en) | 2011-06-01 |
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