US4172409A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fire control system for vehicle-mounted weapon
Assignee: Telefunken Systemtechnik AG
•
Filing: 1977-06-08
•
Granted: 1979-10-30
•
Expires: 1997-06-08
Abstract
Abstract In a fire control system for a weapon installed on a vehicle and including a stabilized sighting mechanism and a stabilized weapon, a range finder coupled to the sighting mechanism, and a fire control computer for calculating the lead and elevation angles to a target, circuitry is provided to automatically compensate for the inherent movement of the vehicle in the computation of the lead angle.
Inventors
- 👤 Helmut Looss
- 👤 Bernd Eschenburg
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 19:21
CPC Classifications
F; F41; F41G; F41G3/00; F41G3/22; F41G3/06; F41G5/00; F41G5/14
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
234 words
In a fire control system for a weapon which is mounted on a rotatable platform installed on a vehicle and including a stabilized sighting mechanism and a stabilized weapon, a range finder coupled to the sighting mechanism, a fire control computer connected for calculating the lead and elevation angles to a target, and means for automatically compensating for the inherent movement of the vehicle in the computation of the lead angle comprising: a source of a signal representing the momentary speed of the vehicle; a source of a signal representing the angular position of said platform relative to the direction of vehicle travel; and first signal processing means connected to said sources and to the range finder for producing a follow-up signal representative of the mathematical product of the vehicle speed and the platform angular position divided by the target range and constituting a representation of a guiding angular velocity value relating to vehicle movement; the improvement wherein said source of signal representing the momentary speed of the vehicle includes a tachometer which is connected to the vehicle engine, and which continuously provides an output signal representative of the speed of the vehicle; and wherein said source of signal representing the angular position of said platform relative to the direction of vehicle travel includes a sensor, driven with said platform, for continuously providing an output signal representative of said angular position of said platform.
Claim 2
Dependent Claim
234 words
In a fire control system for a weapon which is mounted on a rotatable platform installed on a vehicle and including a stabilized sighting mechanism and a stabilized weapon, a range finder coupled to the sighting mechanism, a fire control computer connected for calculating the lead and elevation angles to a target, and means for automatically compensating for the inherent movement of the vehicle in the computation of the lead angle comprising: a source of a signal representing the momentary speed of the vehicle; a source of a signal representing the angular position of said platform relative to the direction of vehicle travel; and first signal processing means connected to said sources and to the range finder for producing a follow-up signal representative of the mathematical product of the vehicle speed and the platform angular position divided by the target range and constituting a representation of a guiding angular velocity value relating to vehicle movement; the improvement wherein said source of signal representing the momentary speed of the vehicle includes a tachometer which is connected to the vehicle engine, and which continuously provides an output signal representative of the speed of the vehicle; and wherein said source of signal representing the angular position of said platform relative to the direction of vehicle travel includes a sensor, driven with said platform, for continuously providing an output signal representative of said angular position of said platform.
Claim 3
Dependent Claim
51 words
An arrangement as defined in claim 1 further comprising means deriving a rated value signal representing the angular velocity of said sighting mechanism relative to the vehicle, and means in said sighting mechanism connected for producing a signal representative of the sum of the follow-up signal and the rated value signal.
Claim 4
Dependent Claim
34 words
An arrangement as defined in claim 2 further comprising filter means connected for eliminating short time variations in the rated value signal, said filter having a time characteristic optimally adapted to the signal characteristics.
Claim 5
Dependent Claim
25 words
An arrangement as defined in claim 2 further comprising a sample and hold circuit connected for eliminating short time variations in the rated value signals.
Claim 6
Dependent Claim
20 words
An arrangement as defined in claim 2 wherein said computer is arranged for calculating both azimuth and elevation lead angles.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1982-10-29 | 1983-04-30 | 1983-10-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-10-29 | 1987-04-30 | 1987-10-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-10-29 | 1991-04-30 | 1991-10-30 | $7700.00 | Window Closed / Lapsed |