IP Library › Granted Patent US 12,729,941
Granted Patent B2
US 12,729,941 · App. 18/227,881 · Granted Sep 8, 2026

Artillery round with rocket motor delay

Inventors: Kenneth R. Jones (Wayne, NJ); Nicholas C. Korinis, II (Franklin Lakes, NJ); Stojan Kotefski (Wayne, NJ)
Assignee: Savit Corporation
F42C15/40
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Quick Facts
Patent No.
US 12,729,941
App. No.
18/227,881
Granted
Sep 8, 2026
Kind
B2
Abstract

Rocket-assisted artillery rounds and methods for firing the same are described herein. In one example, a rocket-assisted artillery round includes a projectile body, rocket fuel disposed in the projectile body, an ignitor positioned to ignite the rocket fuel, and an ignition control system. The ignition control system includes a controller coupled to first and second sensors. The first sensor is configured to detect a first metric. The first metric is indicative of rotation of the projectile body. The second sensor is configured to detect a second metric. The second metric is indicative of setback of the projectile body. The controller is configured to output an activation signal to the ignitor based on the first metric and the second metric.

Claims (37)

1 . An artillery round comprising:

a projectile body; and

a delay control system disposed in the projectile body, the delay control system comprising:

a first sensor configured to detect a magnitude of a first metric, the first metric indicative of commencement of firing of the projectile body, wherein the first metric is a rate of forward acceleration;

a second sensor configured to detect a magnitude of a second metric, the second metric indicative of set forward of the projectile body; and

a controller configured to calculate a timing of an activation output signal based on the magnitude of the first metric and the magnitude of the second metric detected by the first and second sensors.

2 . The artillery round of claim 1 , wherein the first sensor is selected from the group consisting of an accelerometer, a swing mass sensor, an inertial measurement sensor, and a gyroscope.

3 . The artillery round of claim 1 , wherein the second sensor is selected from the group consisting of an accelerometer, an inertial measurement sensor, a pressure sensor, a pressure switch, and an impact sensor.

4 . The artillery round of claim 1 , wherein the delay control system is configured to output the activation signal based on the first metric exceeding a threshold criteria and the second metric exceeding a threshold criteria.

5 . The artillery round of claim 1 further comprising:

a pressure sensor connected to a port open to an aft end of the artillery round and having an output connected to the delay control system, the pressure sensor operable to detect firing or energetics initiation pressure at the aft end of the artillery round.

6 . The artillery round of claim 5 further comprising safety circuitry, the safety circuitry configured to prevent activation based on the output of the activation signal when output of the pressure sensor does not meet a threshold criteria.

7 . The artillery round of claim 1 further comprising:

a power source configured to provide power to the delay control system when the artillery round is fired.

8 . The artillery round of claim 7 , wherein the power source is a generator configured to provide power to the delay control system in response to setback of the artillery round.

9 . The artillery round of claim 7 , wherein the power source is at least one of a primary battery, a generator, a thermal battery, a liquid reserve power source, or a capacitor.

10 . The artillery round of claim 5 , wherein the controller of the delay control system is further configured to output the activation signal only if firing or energetics initiation pressure is detected by the pressure sensor.

11 . The artillery round of claim 1 , wherein the delay control system is disposed in a front portion of the projectile body.

12 . The artillery round of claim 11 , wherein the second sensor is configured to sense pressure through a side and/or front of the projectile body.

13 . The artillery round of claim 1 , wherein the delay control system further comprises:

a normally open switch coupled between a power source and an ignitor, the switch operable to change to closed state based on receipt of the activation signal from the controller.

14 . The artillery round of claim 1 , wherein the delay control system further comprises:

memory, storing an algorithm or a lookup table, coupled to a processor of the controller, the processor of the controller configured to calculate a time delay for outputting the activation signal based on the sensed first and second metrics, and the algorithm or a lookup table.

15 . The artillery round of claim 14 , wherein the processor of the controller is configured to calculate the time delay for outputting the activation signal based on the sensed first and second metrics, and the algorithm and/or a lookup table.

16 . The artillery round of claim 1 , wherein the second sensor is configured to detect spin rate.

17 . An artillery round comprising:

a projectile body; and

a delay control system disposed in the projectile body, the control system comprising:

a first sensor configured to detect a first metric indicative of commencement of firing of the projectile body, the first metric indicative of a magnitude of a rate of forward acceleration of the projectile body;

a second sensor configured to detect a second metric, the second metric indicative of a magnitude of gun barrel pressure or a magnitude of spin rate induced by firing of the artillery round; and

a controller configured to calculate a timing of an activation output signal based on the magnitudes of the first and second metrics detected by the first and second sensors.

18 . The artillery round of claim 17 , wherein the delay control system is configured to output the activation signal based on the rate of the first metric exceeding a threshold criteria and the second metric exceeding a threshold criteria.

19 . The artillery round of claim 17 further comprising safety circuitry, the safety circuitry configured to prevent activation based on the output of the activation signal when output of the second sensor does not meet a threshold criteria.

20 . The artillery round of claim 17 , wherein the ignition control system further comprises:

memory, storing an algorithm or a lookup table, coupled to a processor of the controller, the processor of the controller configured to calculate a time delay for outputting the activation signal based on the sensed magnitudes of the first and second metrics, and the algorithm or a lookup table.

21 . The artillery round of claim 20 , wherein the second sensor is configured to detect spin rate of the projectile body.

22 . The artillery round of claim 20 , wherein the second sensor is configured to detect gun barrel pressure.

Continuity (1)
Related Publication 20250035419A1 · Jan 30, 2025
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