Missile fire-control system and method

• US 4,004,487 A
• Filed: 03/06/1975
• Issued: 01/25/1977
• Est. Priority Date: 03/12/1974
• Status: Expired due to Term

• Current Assignee: Kurt Eichweber
• Original Assignee: Kurt Eichweber
• Inventors: Eichweber, Kurt
• Primary Examiner(s): Bentley, Stephen C.
• Application Number:
  US05/555,940
• Time in Patent Office: 691 Days
• Field of Search: 89/41 L, 89/41 TV, 89/1.815, 102/49.5, 244/3.14, 244/3.15, 244/3.27
• US Class Current: 89/1.815
• CPC Class Codes: F41A 23/34 on wheeled or endless-track vehicles
• CPC Class Codes: F41G 3/14 Indirect aiming means
• CPC Class Codes: F41G 7/007 Preparatory measures taken before the launching of the guided missiles
• CPC Class Codes: F41G 7/20 based on continuous observation of target position
• CPC Class Codes: F41G 7/226 Semi-active homing systems, i.e. comprising a receiver and involving auxiliary illuminating means, e.g. using auxiliary guiding missiles
• CPC Class Codes: F41G 7/2286 using radio waves
• CPC Class Codes: F41G 7/2293 using electromagnetic waves other than radio waves
• CPC Class Codes: F42B 12/365 Projectiles transmitting information to a remote location using optical or electronic means F42B12/385 takes precedence

Abstract

A surface-to-surface missile fire control system employing a pilot projectile fired into a predetermined indirect ballistic trajectory monitored by a fire-control station to determine its actual trajectory and actual coordinates of impact and wherein the pilot projectile has a camera for transmitting a target area picture to the fire-control station during its relatively steep descent. A pilot projectile laser directs a laser beam onto the target area surface to show the prospective impact point of the pilot projectile in a target area picture displayed at the fire-control station and a geographic position marking selector is manually operated to pick from the target area display and automatically enter into a fire-control computer the relative geographic coordinates of the projectile impact point and a selected target shown in the display, and the fire-control computer automatically calculates the coordinates of each selected target and aims a live projectile to the selected target in accordance with its calculated coordinates and the actual trajectory of the pilot projectile.

Claims

1. A method of firing a combat projectile to a selected surface target comprising the steps of aiming and firing, from a launching station, a first pilot projectile into a first preset ballistic flight trajectory providing a steep descent of the pilot projectile to prospectively impact the area of a surface target, transmitting a picture of the surface target area, including the surface target and its position relative to the prospective point of impact of the pilot projectile, to a fire-control station from the pilot projectile during its descent, displaying the transmitted picture of the surface target area, including the surface target and its said position relative to said prospective impact point, at the fire-control station, and aiming a second combat projectile at the launching station into a desired second preset ballistic flight trajectory to hit the surface target in accordance with the flight trajectory of the pilot projectile and the relative position of the surface target to said prospective impact point in the target area picture displayed at the fire-control station, and firing the aimed combat projectile.

2. The method of claim 1 further comprising the step of monitoring the ballistic flight trajectory of the pilot projectile to determine its actual flight trajectory, and wherein the second combat projectile is aimed through computer coordination of the actual flight trajectory determination of the pilot projectile and a computer calculated modification of the flight trajectory in accordance with the relative position of the surface target in the target area picture displayed at the fire-control station.

3. The method of claim 1 wherein the pilot and combat projectiles have substantially the same flight trajectory characteristics.

4. The method of claim 1 further comprising the step of aerodynamically braking the pilot projectile during the transmission of the surface target area picture therefrom.

5. The method of claim 1 comprising computer computation of the desired second ballistic flight trajectory of the combat projectile in accordance with the position of the selected surface target in the displayed target area picture and computer aiming of the combat projectile in accordance with the computed desired second ballistic flight trajectory.

6. The method of claim 1 further comprising the step of firing a second pilot projectile from the launching station into a ballistic trajectory so that it is descending to the surface target area during the descent and impact of the combat projectile, transmitting from the second pilot projectile to the fire-control station during the descent of the second pilot projectile a picture of the surface target area showing the impact of the combat projectile, and displaying at the fire-control station the surface target area picture showing the combat projectile impact.

7. The method of claim 6 wherein the second pilot projectile is fired into a higher ballistic trajectory than the combat projectile.

8. The method of claim 1 further comprising sensing the selected target from the combat projectile during its descent to the surface target area and thereafter automatically steering the combat projectile to the selected target.

9. The method of claim 8 comprising the step of programming the combat projectile to automatically sense the selected target in accordance with its relative position on the surface target area picture transmitted to the fire-control station.

10. A projectile fire-control system for aiming and firing pilot and combat projectiles from a surface launching station to a distant surface target area by aiming and firing the projectiles into ballistic trajectories having a steep descent to the surface target area, comprising a fire-control station, a launching station having a plurality of projectile launching systems with respective projectiles adapted to be aimed for firing their projectiles into respective ballistic trajectories, the projectiles including a plurality of combat projectiles and at least one pilot projectile having a camera therein for transmitting a target area picture from the pilot projectile to the fire-control station during its steep descent, the fire-control station having a fire-control computer for aiming each projectile launching system for aiming the respective projectile into a ballistic trajectory to a selected target in the surface target area, means for firing the pilot projectile into a ballistic trajectory to have a steep descent to the surface target area, displaying means for receiving the target area picture transmission from the pilot projectile during its steep descent and displaying the target area picture for visually selecting any target in the target area picture, manually operable means for marking any selected target in the target area picture and feeding the relative position of the selected target in the target area picture into the fire-control computer for aiming therewith a combat projectile launching system accordingly and thereby aim its combat projectile so it can be fired into a ballistic flight trajectory to proximately impact the selected target, the pilot projectile comprising a laser for transmitting a light beam in the direction of flight of the pilot projectile for marking a light spot on the prospective impact area of the pilot projectile for being received in the target area picture transmitted to the fire-control station.

11. A projectile fire-control system for aiming and firing pilot and combat projectiles from a surface launching station at a distant surface target area by aiming and firing the projectiles into ballistic trajectories having a steep descent to the surface target area, comprising a fire-control station, a launching station having a plurality of projectile launching systems with respective projectiles adapted to be aimed for firing their projectiles into respective ballistic trajectories, the projectiles including a plurality of combat projectiles and at least one pilot projectile having a camera therein for transmitting a target area picture from the pilot projectile to the fire-control station during its steep descent showing the relative position of any surface target to the prospective point of impact of the pilot projectile the fire-control station having a fire-control computer for aiming each projectile launching system for aiming the respective projectile into a preset ballistic trajectory to a selected target in the surface target area, means for aiming and firing the pilot projectile into a first preset ballistic trajectory to have a steep descent to the surface target area, display means for receiving the target area picture transmission from the pilot projectile during its steep descent and displaying the target area picture for visually selecting any target in the target area picture, manually operable means for marking any selected target in the target area picture and feeding the relative position of the selected target in the target area picture to said prospective impact point of the pilot projectile into the fire-control computer for aiming therewith a combat projectile launching system accordingly and thereby aim its combat projectile so it can be fired into a preset ballistic flight trajectory in accordance with the flight trajectory of the pilot projectile and the said relative position of the selected target in the target area picture to said prospective impact point of the pilot projectile and thereby to aim the combat projectile to proximately impact the selected target.

12. A projectile fire-control system according to claim 11 wherein the pilot projectile has a TV type camera for transmitting the target area picture to the fire-control station.

13. A projectile fire-control system according to claim 12 wherein the TV type camera is an infrared camera, thermal camera or low light intensity camera.

14. A projectile fire-control system according to claim 11 wherein the fire-control station comprises pilot projectile trajectory monitoring means for determining the actual pilot projectile trajectory and for feeding inputting its actual trajectory into the fire-control computer, the fire-control computer being operable for aiming the combat projectile launching systems in accordance with the actual pilot projectile trajectory in coordination with the relative position of the selected target in the target area picture.

15. A projectile fire-control system according to claim 14 wherein the pilot and combat projectiles have substantially the same flight trajectory characteristics and their launching systems are substantially the same.

16. A projectile fire-control system according to claim 11 wherein the marking means comprises a marker manually adjustable over the displayed target area picture area and sensing means for determining the relative position of the marker and therefore the relative position of the point of the target area picture underlying the marker.

17. A projectile fire-control system according to claim 11 wherein the fire-control station comprises optical matching means for displaying the target area picture with coordinates and at a predetermined scale.

18. A projectile fire-control system according to claim 11 wherein the combat projectiles have automatic target homing and steering means effective during the steep descent of the combat projectile to sense the selected target and thereafter steer the projectile to the selected target.

19. A projectile fire-control system according to claim 18 wherein the automatic target homing and steering means comprises target area representation means programmable with a predetermined target area representation and comparison means for comparing, during the descent of the combat projectile, the combat projectile impact area with the programmed target area representation, the homing and steering means being operable to automatically steer the combat projectile in accordance with the relationship between the projectile impact area and the programmed target area representation.

20. A projectile fire-control system according to claim 11 wherein the plurality of projectile launching systems have individually directable projectile launching guides and collectively form a replaceable multiple projectile magazine, motor means for individually directing the launching guides for aiming the respective projectiles, and a common plug for the multiple projectile magazine for connecting the motor means of the directable launching guides of the magazine to the fire-control computer for directing each launching guide with the fire-control computer.

21. A projectile fire-control system according to claim 20 further comprising adjustment means for angularly adjusting the projectile magazine for roughly angularly adjusting the launching guides thereof.

22. A projectile fire-control system according to claim 21 further comprising magazine elevation and azimuth transmitter means operable to transmit to the fire-control computer the elevation and azimuth angles of the multiple projectile magazine.

23. A projectile fire-control system according to claim 11 wherein the marking means is operable for marking time spaced positions of a selected movable target in the target area picture representing prior actual movement thereof, and wherein the fire-control computer is operably by said time spaced positions fed thereto by the marking means for aiming a combat projectile launching system to aim a combat projectile to lead the selected target in accordance with its prior actual movement.

24. A method of firing a combat projectile to a selected surface target comprising the steps of firing, from a launching station, a first pilot projectile into a first ballistic flight trajectory providing a steep descent of the pilot projectile to prospectively impact the area of a surface target, transmitting a picture of the surface target area, including the surface target, to a fire-control station from the pilot projectile during its descent, marking the prospective impact area of the pilot projectile on the surface target area picture transmitted to the fire-control station, displaying the transmitted picture of the surface target area, including the surface target, at the fire-control station, and aiming a second combat projectile at the launching station into a desired second ballistic flight trajectory to hit the surface target in accordance with its relative position in the target area picture displayed at the fire-control station, and firing the aimed combat projectile.

25. The method of claim 24 wherein the prospective impact area of the pilot projectile is marked by a laser beam projecting from the pilot projectile onto the prospective impact area for being transmitted to the fire-control station in the surface area picture.