EP0994326B1 - Suchkopf, insbesondere für Hochgeschwindigkeits-Flugkörper - Google Patents
Suchkopf, insbesondere für Hochgeschwindigkeits-Flugkörper Download PDFInfo
- Publication number
- EP0994326B1 EP0994326B1 EP99118934A EP99118934A EP0994326B1 EP 0994326 B1 EP0994326 B1 EP 0994326B1 EP 99118934 A EP99118934 A EP 99118934A EP 99118934 A EP99118934 A EP 99118934A EP 0994326 B1 EP0994326 B1 EP 0994326B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- cover
- seeker
- opening
- target
- sight
- 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
Links
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F42—AMMUNITION; BLASTING
- F42B—EXPLOSIVE CHARGES, e.g. FOR BLASTING, FIREWORKS, AMMUNITION
- F42B15/00—Self-propelled projectiles or missiles, e.g. rockets; Guided missiles
- F42B15/01—Arrangements thereon for guidance or control
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F42—AMMUNITION; BLASTING
- F42B—EXPLOSIVE CHARGES, e.g. FOR BLASTING, FIREWORKS, AMMUNITION
- F42B15/00—Self-propelled projectiles or missiles, e.g. rockets; Guided missiles
- F42B15/34—Protection against overheating or radiation, e.g. heat shields; Additional cooling arrangements
Definitions
- the invention relates to a search head with a viewfinder, which is behind one for one Useful radiation permeable window is arranged and on the useful radiation of a target responds and delivers target signals dependent on the position of the target in the visual field with Means for determining a line of sight to the target and with a cover to Protection of the window against thermal and mechanical loads, especially for High-speed missiles.
- Target-tracking missiles have a seeker head that points towards one targeting infrared radiation emitted.
- the search head determines the Line of sight to that target. This can happen that the seeker head on all sides contains pivotable, inertially stabilized viewfinder.
- the viewfinder has an imaging optical system through which a part of the visual field is usually on a image-resolution detector is imaged.
- the viewfinder delivers target placement signals by means of which the seeker is aimed at.
- the viewfinder optical axis falls then along with the line of sight from the viewfinder to the target.
- the search head can also contain a missile-fixed (“strap-down”) viewfinder, the line of sight to the target from the seeker signals and signals from an inertial sensor unit is determined by calculation.
- a missile-fixed (“strap-down") viewfinder the line of sight to the target from the seeker signals and signals from an inertial sensor unit is determined by calculation.
- the viewfinder is arranged behind a window.
- the window is for the useful radiation, on permeable to the viewfinder.
- the viewfinder is the window made of a material that is transparent to infrared radiation manufactured.
- the window is usually a spherical bowl-shaped "cathedral". This cathedral sits on the tip of the missile.
- a corresponding example is from document EP-A-0369958 refer to.
- the window With high speed missiles, the window is very large thermal and exposed to mechanical stress. The window also gets hot and emits even infrared radiation. This can lead to the viewfinder being removed from the Natural radiation of the window is "blinded". With such high-speed missiles the infrared search head is practically only in the final phase of the flight of the Missile used to direct the missile to the target. Before that Missiles by other means, e.g. Radar, directed towards the target. For protection the window against the stresses mentioned and to avoid a Inadmissible heating of the window is therefore known to the window during the cover a large part of the flight with a cover and cover this cover first to repel in the final phase. In this final phase, however, the window is full exposed to aerodynamic influences. It is also known to have one in front of the window Provide all-round cover, which every point of the window only periodically releases. In this case, however, the seeker does not make the target continuous only observed during periodic intervals.
- the invention has for its object in a search head of the input kind on the one hand the window from aerodynamically, thermally and mechanically Protect influences and on the other hand a continuous observation of the goal through the viewfinder.
- this object is achieved in that the cover has an opening has and with this opening can be tracked by adjusting means of the line of sight.
- the window is always protected by a cover.
- the Cover only has an opening for the beam path of the viewfinder. Since the This line of sight to the target can pass anywhere through the window constantly tracking the line of sight. This allows most of the window from the Cover must be covered. However, it is ensured that the seeker constantly hits the target can watch without interruptions.
- Embodiments of the invention are the subject of the dependent claims.
- 10 denotes the tip of a missile.
- a "cathedral" 12 In the top 10 of the Missile sits a spherical shell-shaped window, a "cathedral" 12. The cathedral is around one Sphere center 13 curved.
- a viewfinder 14 sits behind the dome 12 and passes through here the entrance lens of his imaging optical system is shown.
- the imaging optical system forms a part of the visual field containing the target on one (not shown) image resolution detector.
- the viewfinder is as shown in Fig. 1, 3 and 5 it can be seen that the center of the ball 13 can be pivoted on all sides.
- the viewfinder 14 will kept constantly focused on the goal.
- the optical axis 16 of the viewfinder 14 falls hence along with the line of sight from the viewfinder to the target.
- a cover 18, which is also spherical in shape.
- the cover 18 is also curved around the center of the sphere 13.
- the cover 18 has one circular opening 20.
- the opening 20 is slightly larger than the entrance aperture of the viewfinder, here as the entrance lens of the imaging optical system.
- the opening 20 in the cover 18 is the line of sight to the target in a manner to be described trackable, such that the opening 20 constantly to the line of sight and thus coincident optical axis 16 of the viewfinder 14 is centered.
- the viewfinder 14 is in a first position a line of sight or optical axis 16, in a middle, second position with a Line of sight or optical axis 16A and in a third position with a line of sight or optical axis 16B shown.
- the opening 20 follows the line of sight.
- the optical axes 16, 16A and 16B lie in the paper plane of the figures.
- the cover 18 is used for tracking around a perpendicular to the paper plane pivoted the axis center of the ball. If the optical axis 16 from the Paper plane of the figures migrates out, the cover 18 is perpendicular to the Longitudinal axis 22 pivoted.
- the cover 18 is only one relative small, circular opening free, just as much as for the passage of the beam path the viewfinder is needed.
- the cover 18 must have two degrees of freedom be flexible and follow the line of sight in two degrees of freedom.
- the cover 24 is also spherical around the Sphere center 13 curved.
- the cover 24 has in the embodiment of Fig.7 to 12 an elongated opening 26.
- the opening 26 is at the ends of Semicircles 28 and 30 and bounded on the sides by edges 32 and 34, which in mutually parallel planes.
- the opening 26 extends diagonally across the entire field of view of the seeker head.
- the cover 24 is one by one Sphere center 13 extending perpendicular to the longitudinal axis of the missile and to the Planes of the edges 32 and 34 parallel axis 36 pivotable.
- the cover 24 need not move.
- the viewfinder 14 "sees" in all positions through the elongated opening 26. This is from Fig. 8, 10 and 12 can be seen. But if the line of sight is outside this paper level, then pans the cover about the axis 36 so that the center plane of the opening 26 of the line of sight is tracked.
- a larger area of the window 12 remains free, namely behind the elongated opening 26.
- this is a mobility of the cover 18 and a tracking of the cover 18 is only required with one degree of freedom.
- Figure 13 is a block diagram showing the viewfinder 14 tracking the line of sight and the tracking of the cover 18 and 24 after the viewfinder 14 illustrates.
- the viewfinder is again designated 14.
- the seeker 14 provides a target drop signal which is represented by block 38.
- the target storage signal indicates the size and Direction the deposit of the observed target from the optical axis 16 of the viewfinder 14 again.
- a viewfinder tracking signal is generated from the target placement signal. This is represented by block 40.
- the viewfinder tracking signal is on viewfinder tracking means 42 connected.
- the seeker tracking means 42 seek to zero the target storage, ie align the viewfinder 14 with its optical axis 16 to the target. That is a first Control loop. The optical axis then coincides with the line of sight to the target.
- steering signals for the missile are derived. That is in Fig. 13 by block 44 shown.
- a tap 46 taps the search creation.
- a tap 48 takes the position of Cover 18 off.
- the difference between the tap signals Taps 46 and 48 formed. This difference provides a coverage tracking signal.
- The is represented by block 52.
- the coverage tracking signal is on coverage tracking means 54 switched.
- the cover tracking means 54 pivot the Cover 18 so that opening 20 or 26 is always centered on optical axis 16 of the viewfinder 14 and thus to the line of sight.
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Aviation & Aerospace Engineering (AREA)
- Combustion & Propulsion (AREA)
- Aiming, Guidance, Guns With A Light Source, Armor, Camouflage, And Targets (AREA)
- Optical Radar Systems And Details Thereof (AREA)
Description
- Fig.1
- zeigt schematisch einen Längsschnitt durch eine erste Ausführung eines Suchkopfes mit beweglicher Abdeckung des Fensters bei einer ersten Richtung der Sichtlinie.
- Fig.2
- zeigt eine Ansicht von links in Fig.1 gesehen.
- Fig.3
- zeigt einen Längsschnitt des Suchkopfes bei einer zweiten Richtung der Sichtlinie
- Fig.4
- zeigt eine Ansicht von links in Fig.3 gesehen.
- Fig.5
- zeigt einen Längsschnitt des Suchkopfes bei einer dritten Richtung der Sichtlinie
- Fig.6
- zeigt eine Ansicht von links in Fig.5 gesehen.
- Fig.7
- zeigt schematisch einen Längsschnitt durch eine zweite Ausführung eines Suchkopfes mit beweglicher Abdeckung des Fensters bei der ersten Richtung der Sichtlinie.
- Fig.8
- zeigt eine Ansicht von links in Fig.7 gesehen.
- Fig.9
- zeigt einen Längsschnitt des Suchkopfes bei der zweiten Richtung der Sichtlinie
- Fig.10
- zeigt eine Ansicht von links in Fig.9 gesehen.
- Fig.11
- zeigt einen Längsschnitt des Suchkopfes bei der dritten Richtung der Sichtlinie
- Fig.12
- zeigt eine Ansicht von links in Fig.11 gesehen.
- Fig.13
- ist ein Blockdiagramm und zeigt schematisch, wie die optische Achse des Suchers der Sichtlinie und die Abdeckung der optischen Achse des Suchers nachgeführt werden.
Claims (8)
- Suchkopf mit einem Sucher (14), der hinter einem für eine Nutzstrahlung durchlässigen Fenster (12) angeordnet ist und auf die Nutzstrahlung eines Ziels anspricht und von der Lage des Ziels im Gesichtsfeld abhängige Zielsignale liefert, mit Mitteln zur Bestimmung einer Sichtlinie zu dem Ziel und mit einer Abdeckung (18;24) zum Schutz des Fensters (12) vor thermischen und mechanischen Belastungen, insbesondere für Hochgeschwindigkeits-Flugkörper, dadurch gekennzeichnet, daß die Abdeckung (18;24) eine Öffnung (20;26) aufweist und mit dieser Öffnung (20;26) durch Stellmittel (54) der Sichtlinie nachführbar ist.
- Suchkopf nach Anspruch 1, dadurch gekennzeichnet, daß der Sucher (14) durch die Zielsignale dem Ziel und die Öffnung (20;26) der Abdeckung (18;24) wiederum der Bewegung des Suchers (14) nachführbar ist.
- Suchkopf nach Anspruch 2, dadurch gekennzeichnet, daß die Öffnung (20;26) in der Abdeckung (18;24) größer als die Eingangsapertur des Suchers (14) aber kleiner als das Gesichtsfeld ist.
- Suchkopf nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, daß die Öffnung (26) langestreckt und die Abdeckung (24) quer zu der Längsrichtung der Öffnung (26) mit nur einem Freiheitsgrad beweglich ist.
- Suchkopf nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, daß die Abmessungen der Öffnung (20) in zwei zueinander senkrechten Richtungen im wesentlichen gleich sind und die Abdeckung (18) mit zwei Freiheitsgraden beweglich ist.
- Suchkopf nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, daß das Fenster ein kugelabschnittförmiger Dom (12) mit einem Kugelmittelpunkt (13) ist.
- Suchkopf nach Anspruch 6, dadurch gekennzeichnet, daß die Abdeckung (18;24) um den Kugelmittelpunkt (13) des Domes (12) sphärisch gekrümmt ist.
- Suchkopf nach den Ansprüchen 5, 6 und 7, dadurch gekennzeichnet, daß die Öffnung (20) kreisförmig ist.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19847218 | 1998-10-13 | ||
DE19847218A DE19847218A1 (de) | 1998-10-13 | 1998-10-13 | Suchkopf, insbesondere für Hochgeschwindigkeits-Flugkörper |
Publications (3)
Publication Number | Publication Date |
---|---|
EP0994326A2 EP0994326A2 (de) | 2000-04-19 |
EP0994326A3 EP0994326A3 (de) | 2001-07-11 |
EP0994326B1 true EP0994326B1 (de) | 2004-05-12 |
Family
ID=7884354
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP99118934A Expired - Lifetime EP0994326B1 (de) | 1998-10-13 | 1999-09-25 | Suchkopf, insbesondere für Hochgeschwindigkeits-Flugkörper |
Country Status (2)
Country | Link |
---|---|
EP (1) | EP0994326B1 (de) |
DE (2) | DE19847218A1 (de) |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4709876A (en) * | 1985-04-24 | 1987-12-01 | The Boeing Company | Pneumatic missile seeker head |
DE3836783A1 (de) * | 1988-10-28 | 1990-05-03 | Diehl Gmbh & Co | Flugkoerper mit einem ir-sensor |
SE460437B (sv) * | 1988-11-18 | 1989-10-09 | Saab Missiles Ab | Skyddsanordning foer sensororgan i farkost |
DE3911576A1 (de) * | 1989-04-08 | 1990-10-11 | Rheinmetall Gmbh | Fluegelstabilisiertes geschoss |
DE4112140A1 (de) * | 1991-04-13 | 1992-10-15 | Bodenseewerk Geraetetech | Suchkopfabdeckung fuer lenkflugkoerper |
-
1998
- 1998-10-13 DE DE19847218A patent/DE19847218A1/de not_active Withdrawn
-
1999
- 1999-09-25 EP EP99118934A patent/EP0994326B1/de not_active Expired - Lifetime
- 1999-09-25 DE DE59909457T patent/DE59909457D1/de not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
EP0994326A2 (de) | 2000-04-19 |
DE19847218A1 (de) | 2000-04-20 |
EP0994326A3 (de) | 2001-07-11 |
DE59909457D1 (de) | 2004-06-17 |
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