SE463230B - submunition - Google Patents
submunitionInfo
- Publication number
- SE463230B SE463230B SE8900665A SE8900665A SE463230B SE 463230 B SE463230 B SE 463230B SE 8900665 A SE8900665 A SE 8900665A SE 8900665 A SE8900665 A SE 8900665A SE 463230 B SE463230 B SE 463230B
- Authority
- SE
- Sweden
- Prior art keywords
- parachute
- combat
- rotation
- moment
- substrate
- Prior art date
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F42—AMMUNITION; BLASTING
- F42B—EXPLOSIVE CHARGES, e.g. FOR BLASTING, FIREWORKS, AMMUNITION
- F42B10/00—Means for influencing, e.g. improving, the aerodynamic properties of projectiles or missiles; Arrangements on projectiles or missiles for stabilising, steering, range-reducing, range-increasing or fall-retarding
- F42B10/32—Range-reducing or range-increasing arrangements; Fall-retarding means
- F42B10/48—Range-reducing, destabilising or braking arrangements, e.g. impact-braking arrangements; Fall-retarding means, e.g. balloons, rockets for braking or fall-retarding
- F42B10/56—Range-reducing, destabilising or braking arrangements, e.g. impact-braking arrangements; Fall-retarding means, e.g. balloons, rockets for braking or fall-retarding of parachute or paraglider type
Landscapes
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Radar Systems Or Details Thereof (AREA)
- Aiming, Guidance, Guns With A Light Source, Armor, Camouflage, And Targets (AREA)
Description
465 250 Ändamålet med uppfinningen är att lösa ovannämnda problem och åstadkomma en substridsdel där de oönskade pendelrörelserna avsevärt har reducerats. The object of the invention is to solve the above-mentioned problems and to provide a substrate part where the undesired pendulum movements have been considerably reduced.
Uppfinningen kännetecknas därvid i huvudsak av att fallskärmens ¿ rotationsriktning är motsatt rotationsriktningen hos strids- delen.The invention is hereby characterized mainly by the fact that the direction of rotation of the parachute ¿is opposite to the direction of rotation of the combat part.
Vid en fördelaktig utföringsform hos uppfinningen är vidare fallskärmen fäst vid en platta vars axiella tröghetsmoment är så avpassat att rörelsemängdmomentet hos plattan nära överensstämmer med rörelsemängdmomentet hos resten av strids- delen.In an advantageous embodiment of the invention, the parachute is further attached to a plate whose axial moment of inertia is so adapted that the moment of movement of the plate closely corresponds to the moment of movement of the rest of the combat part.
En utföringsform hos uppfinningen visas schematiskt i bifogade ritning.An embodiment of the invention is shown schematically in the accompanying drawing.
Enligt uppfinningen består substridsdelen av en fallskärm 1 med rotationsdrivande öppningar 2 som bibringar fallskärmen en hög rotationshastighet som ger fallskärmen en hög stabilitet och effektiv bromsförmåga.According to the invention, the substrate part consists of a parachute 1 with rotation-driving openings 2 which impart to the parachute a high rotational speed which gives the parachute a high stability and effective braking ability.
Fallskärmen 1 är fäst vid en platta 3 som har till uppgift att förhindra att linorna trasslar ihop sig. Plattan 3 är fäst vid den egentliga substridsdelen med ett lager 4 som medför att fallskärmens rotation ej överförs till denna. Lagret är före- trädesvis ett rullningslager eller annat lågfriktionslager.The parachute 1 is attached to a plate 3 which has the task of preventing the ropes from tangling. The plate 3 is attached to the actual substrate part with a bearing 4 which means that the rotation of the parachute is not transmitted to it. The bearing is preferably a rolling bearing or other low-friction bearing.
Substridsdelens verkansdel 5 är försedd med fenor 7 eller annan typ av aerodynamiska styrytor med sådan uformning att de ger substridsdelen en önskad rotationshastighet, företrädesvis i storleksordningen 5 till 20 varv/s. Verkansdelen kan vara en i och för sig känd RSV-4 eller annan verkansdel med avståndsverkan.The action part 5 of the substrate part is provided with fins 7 or another type of aerodynamic guide surfaces with such a design that they give the substrid part a desired rotational speed, preferably in the order of 5 to 20 rpm. The action part can be a per se known RSV-4 or other action part with a distance effect.
Verkansdelen är vidare försedd med en sensor 6 av i och för sig känt slag, exempelvis en IR-sensor eller radarsensor eller kombination av båda. Sensorn intar en vinkel mot substrids- delens fallriktning = centrumlinjen 8. På så sätt kommer sensorn 6 att avsöka ett spiralformat område i målterrängen. Verkansdelen 463 250 har på i och för sig känt sätt en verkansriktning som är parallell med sensorns avkänningsriktning. En viss vinkel- skillnad kan dock finnas så att sensorn ligger före en tid som motsvarar tiden för signalbehandling och utlösning av laddningen.The action part is further provided with a sensor 6 of a kind known per se, for example an IR sensor or radar sensor or a combination of both. The sensor assumes an angle to the direction of fall of the sub-section = the center line 8. In this way, the sensor 6 will scan a helical area in the target terrain. The action part 463 250 has in a manner known per se a direction of action which is parallel to the sensing direction of the sensor. However, there may be a certain angular difference so that the sensor is ahead of a time that corresponds to the time for signal processing and triggering of the charge.
Fallskärmens rotationsriktning är motsatt rotationsriktning hos stridsdelen och dessutom är det axiella tröghetsmomentet hos fallskärmens fästplatta 3 så avpassat att rörelsemängdsmomentet hos plattan kommer att nära överensstämma med rörelsemängds- momentet hos resten av stridsdelen. Därvid kommer gyralkrafterna hos plattan att motverka gyralkrafterna hos stridsdelen. Gyral- krafterna hos den kompletta stridsdelen kommer så så sätt helt eller till stor del att försvinna vilket gör att problemet med pendelrörelser avsevärt reduceras.The direction of rotation of the parachute is the opposite direction of rotation of the combat part and in addition the axial moment of inertia of the parachute mounting plate 3 is so adapted that the moment of movement of the plate will closely correspond to the moment of movement of the rest of the combat part. Thereby, the gyral forces of the plate will counteract the gyral forces of the combat part. The gyral forces of the complete combat part will thus disappear completely or largely, which means that the problem of pendulum movements is considerably reduced.
Claims (4)
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SE8900665A SE463230B (en) | 1989-02-27 | 1989-02-27 | submunition |
DE19904002355 DE4002355A1 (en) | 1989-02-27 | 1990-01-26 | Warhead fired from mortar - has parachute to limit speed of descent and rotatable plate to control rotation of warhead w.r.t. parachute |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SE8900665A SE463230B (en) | 1989-02-27 | 1989-02-27 | submunition |
Publications (3)
Publication Number | Publication Date |
---|---|
SE8900665D0 SE8900665D0 (en) | 1989-02-27 |
SE8900665L SE8900665L (en) | 1990-08-28 |
SE463230B true SE463230B (en) | 1990-10-22 |
Family
ID=20375172
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
SE8900665A SE463230B (en) | 1989-02-27 | 1989-02-27 | submunition |
Country Status (2)
Country | Link |
---|---|
DE (1) | DE4002355A1 (en) |
SE (1) | SE463230B (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2022177490A1 (en) * | 2021-02-19 | 2022-08-25 | Bae Systems Bofors Ab | Warhead arranged with parachute, method for regulating the attachment of a warhead to a parachute and a projectile |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE4108057A1 (en) * | 1991-03-13 | 1992-09-17 | Messerschmitt Boelkow Blohm | Triggering device for rotating war-head with laser rangefinder(s) - employs passive IR detector to increase probability of impact on target w.r.t. range and rotational speed |
US6012393A (en) * | 1995-08-17 | 2000-01-11 | State Of Israel-Ministry Of Defense, Rafael-Armamient Dieve | Asymmetric penetration warhead |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2204294A5 (en) * | 1972-10-25 | 1974-05-17 | Cnim | |
DE3510990A1 (en) * | 1985-03-27 | 1986-10-09 | Brüggemann & Brand GmbH & Co KG, 5802 Wetter | Spinning missile for lowering a load by means of a parachute |
-
1989
- 1989-02-27 SE SE8900665A patent/SE463230B/en not_active IP Right Cessation
-
1990
- 1990-01-26 DE DE19904002355 patent/DE4002355A1/en not_active Withdrawn
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2022177490A1 (en) * | 2021-02-19 | 2022-08-25 | Bae Systems Bofors Ab | Warhead arranged with parachute, method for regulating the attachment of a warhead to a parachute and a projectile |
Also Published As
Publication number | Publication date |
---|---|
DE4002355A1 (en) | 1990-09-13 |
SE8900665D0 (en) | 1989-02-27 |
SE8900665L (en) | 1990-08-28 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
NUG | Patent has lapsed |
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