Method for vectoring active or combat projectiles over a defined operative range using a GPS-supported pilot projectile

• US 6,037,899 A
• Filed: 05/05/1998
• Issued: 03/14/2000
• Est. Priority Date: 05/05/1997
• Status: Expired due to Fees

• Current Assignee: Rheinmetall GmbH
• Original Assignee: Rheinmetall GmbH
• Inventors: Weber, Adolf
• Primary Examiner(s): Tarcza, Thomas H.
• Assistant Examiner(s): PHAN, DAO LINDA
• Application Number:
  US09/072,025
• Time in Patent Office: 679 Days
• Field of Search: 342/357.01, 342/357.06, 342/62, 701/213, 244/3.1, 244/3.2, 244/3.15
• US Class Current: 342/357.36
• CPC Class Codes: F41G 3/142 based on observation of a first shoot; using a simulated shoot training F41G3/26

Abstract

For an exact vectoring of active or combat projectiles, a GPS-supported pilot projectile is provided with a satellite navigation system or GPS receiver and continuously detects its own position and speed during the complete operational (firing) sequence--and thus also the ballistic interference variables--and transmits this information via a transmitter to the ordnance unit for evaluation and correction of the firing parameter of a subsequently fired active or combat projectile. If the active or combat ammunition or projectile to be vectored is equipped with submunitions, then the GPS receiver and the transmitter are located in the pilot submunition, so that the ballistic interference variables affecting the submunition can be recorded as well.

Claims

1. A method for vectoring active projectiles over an operative target area range comprising:

providing a pilot projectile or submunition for the pilot projectile with a satellite navigation receiver, and a transmitter, and with the external form, mass and mass inertial moments of the pilot projectile or submunition, including the rate of speed of vertical descent for the submunition, substantially coinciding with the corresponding values for the active projectile or active submunition to be fired at a target area;

firing the pilot projectile toward a target area;

continuously detecting the current position, as well as the pilot projectile/submunition speed during the complete operational sequence of the pilot projectile using the satellite navigation receiver; and

,

transmitting the received position information to a desired target receiver for evaluation and formation of correction values for a subsequently fired active projectile.

2. The method according to claim 1, wherein the active projectile for vectoring contains a submunition;

and wherein the method further comprises;

ejecting the pilot projectile submunition from the pilot projectile with the aid of a delayed-action fuse in the same manner as during the operational sequence for the active projectile; and

causing the further operational sequence for the submunition of the pilot projection to substantially coincide with that of the active ammunition with respect to external ballistics and intermediate ballistics.

3. The method according to claim 1, wherein the desired targeted receiver for the position information is located at one of the ordnance unit assigned to attack the target, or at an advanced observer or a reconnaissance drone, which then transmits the position information to the ordnance unit.

4. A global positioning system (GPS) supported pilot projectile for use in vectoring a subsequently fired active or combat projectile according to claim 1, with the pilot projectile comprising:

a pilot projectile having an external form, mass and mass inertial moments substantially coinciding with corresponding values of an active projectile;

a satellite navigation receiver disposed in the pilot projectile; and

a radio transmitter disposed in the pilot projectile for transmitting position data received by the satellite navigation receiver to a desired receiver.

5. A pilot projectile as defined in claim 4 wherein:

the active projectile has an active submunition;

the pilot projectile has a submunition having an external form, mass, mass inertial moments and rate of speed of vertical descent coinciding with corresponding values of the active submunition of the active projectile; and

the satellite navigation receiver and the transmitter are disposed in the submunition of the pilot projectile.