Ammunition and explosives – Igniting devices and systems – Ignition or detonation circuit
Patent
1981-07-27
1983-10-11
Jordan, Charles T.
Ammunition and explosives
Igniting devices and systems
Ignition or detonation circuit
102427, F42C 1306
Patent
active
044085338
ABSTRACT:
Munition actuation signals are generated by an acoustic target ranging system that predicts the time and distance of closest approach of a moving target to a munition. The predictive capability of the system is based on the rate of change of the sound level emanating from the target compared to its absolute magnitude. The system generates munition standby, arm and fire signals by differencing the received acoustic amplitude function signal and its first derivative and subsequently comparing the difference signal with various reference level signals. The reference level signals are a function of munition effective range and target conditions. Mechanization of the system is realized by simple circuitry consisting of an acoustic signal detector and processor, a differentiating operational amplifier, a programmable gain amplifier, a reference level signal source, an adder and a comparator circuit.
REFERENCES:
patent: 2341351 (1944-02-01), Barkley
patent: 2439255 (1949-11-01), Barker
patent: 3115833 (1963-12-01), Hall et al.
patent: 4135452 (1979-01-01), Kinsey et al.
patent: 4189999 (1980-02-01), Anderson
patent: 4207623 (1980-06-01), Anderson
Owen Thomas E.
Peters Wendell R.
Suhler Sidney A.
Jordan Charles T.
Matthews Willard R.
Singer Donald J.
The United States of America as represented by the Secretary of
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