US3739689A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fluidic failure detection system
Assignee: United States Department of the Navy
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Filing: 1970-11-23
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Granted: 1973-06-19
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Expires: 1990-11-23
Abstract
Abstract A fluidic failure detection system to be used in conjunction with the fluidic steering and diving control system. The detection system is a fluidic analog of the steering control system and duplicates what the control system is to do and then compares its output with that of the control system.
Inventors
- 👤 D Craven
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 15:27
CPC Classifications
F; F15; F15B; F15B21/00; F15B21/001; F15B20/00
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
376 words
A fluidic failure detection system which is an analog of a fluidic steering and diving control system, the diving control system being made up of a control valve, an actuator flapper nozzle valve, an actuator and a spool flapper nozzle valve and which is to be connected to a set of fluidic steering and diving control system control lines, comprising: an input means to generate an input signal; a first fluidic amplifier connected to said input means to amplify said input signal and to produce a first signal; a first fluidic integrator connected to the output of said first fluidic amplifier to produce a second signal thereby creating an analog of the function of said control valve within said fluidic steering and diving control system; a second fluidic amplifier connected to the output of said first fluidic integrator to amplify said second signal to produce a third signal; failure detection system internal operational control lines one of said failure detection system internal operational control lines connecting the output of said second fluidic amplifier to feed back part of said third signal to cancel part of said first signal, thereby creating an analog of the function of said spool flapper nozzle valve within said fluidic steering and diving control system; a second fluidic integrator connected to the output of said second fluidic amplifier to receive the remainder of said third signal to produce a fourth signal thereby creating an analog of the function of said actuator within said fluidic steering and diving control system; a third fluidic amplifier connected to the output of said second fluidic integrator to amplify said fourth signal producing a fifth signal, one internal operational control line also connecting the output of said third fluidic amplifier to the output of said first fluidic amplifier to feed back said fifth signal to cancel the remaining part of said first signal, thereby creating an analog of the function of said actuator flapper nozzle valve within said fluidic steering and diving control system; and a comparator means connected to said internal operational control lines and adapted to be connected to said fluidic steering and diving connecting control lines, to compare the fluidic failure detection system and the fluidic steering and diving control operational system for deviations.
Claim 2
Dependent Claim
376 words
A fluidic failure detection system which is an analog of a fluidic steering and diving control system, the diving control system being made up of a control valve, an actuator flapper nozzle valve, an actuator and a spool flapper nozzle valve and which is to be connected to a set of fluidic steering and diving control system control lines, comprising: an input means to generate an input signal; a first fluidic amplifier connected to said input means to amplify said input signal and to produce a first signal; a first fluidic integrator connected to the output of said first fluidic amplifier to produce a second signal thereby creating an analog of the function of said control valve within said fluidic steering and diving control system; a second fluidic amplifier connected to the output of said first fluidic integrator to amplify said second signal to produce a third signal; failure detection system internal operational control lines one of said failure detection system internal operational control lines connecting the output of said second fluidic amplifier to feed back part of said third signal to cancel part of said first signal, thereby creating an analog of the function of said spool flapper nozzle valve within said fluidic steering and diving control system; a second fluidic integrator connected to the output of said second fluidic amplifier to receive the remainder of said third signal to produce a fourth signal thereby creating an analog of the function of said actuator within said fluidic steering and diving control system; a third fluidic amplifier connected to the output of said second fluidic integrator to amplify said fourth signal producing a fifth signal, one internal operational control line also connecting the output of said third fluidic amplifier to the output of said first fluidic amplifier to feed back said fifth signal to cancel the remaining part of said first signal, thereby creating an analog of the function of said actuator flapper nozzle valve within said fluidic steering and diving control system; and a comparator means connected to said internal operational control lines and adapted to be connected to said fluidic steering and diving connecting control lines, to compare the fluidic failure detection system and the fluidic steering and diving control operational system for deviations.
Claim 3
Dependent Claim
299 words
A fluidic failure detection system which is an analog of fluidic steering and diving control system, the diving and control system being made up of a control valve, an actuator flapper nozzle valve, an actuator and a spool flapper nozzle valve and which is to be connected to a set of fluidic steering and diving control system control lines, comprising: an input means to generate an input signal; a first fluidic amplifier for connected to said input means to amplify said input signal and to produce a first signal; a first fluidic integrator connected to the output of said first fluidic amplifier for to produce a second signal; a second fluidic amplifier connected to the output of said first fluidic integrator to amplify said second signal to produce a third signal; failure detection system internal operational control lines one of said failure detection system internal operational control lines connecting the output of said second fluidic amplifier to feed back part of said third signal to cancel part of said first signal; a second fluidic integrator connected to the output of said second fluidic amplifier to receive the remainder of said third signal to produce a fourth signal; a third fluidic amplifier connected to the output of said fluidic integrator to amplify said fourth signal producing a fifth signal, said one internal operational control line also connecting the output of said third fluidic amplifier to the output of said fluidic amplifier to feed back said fifth signal to cancel the remaining part of said first signal; and a comparator means connected to said internal operational control lines and adapted to be connected to said fluidic steering and diving connecting control lines to compare the fluidic failure detection system output and the fluidic steering and diving control operational system for deviations.
Claim 4
Dependent Claim
299 words
A fluidic failure detection system which is an analog of fluidic steering and diving control system, the diving and control system being made up of a control valve, an actuator flapper nozzle valve, an actuator and a spool flapper nozzle valve and which is to be connected to a set of fluidic steering and diving control system control lines, comprising: an input means to generate an input signal; a first fluidic amplifier for connected to said input means to amplify said input signal and to produce a first signal; a first fluidic integrator connected to the output of said first fluidic amplifier for to produce a second signal; a second fluidic amplifier connected to the output of said first fluidic integrator to amplify said second signal to produce a third signal; failure detection system internal operational control lines one of said failure detection system internal operational control lines connecting the output of said second fluidic amplifier to feed back part of said third signal to cancel part of said first signal; a second fluidic integrator connected to the output of said second fluidic amplifier to receive the remainder of said third signal to produce a fourth signal; a third fluidic amplifier connected to the output of said fluidic integrator to amplify said fourth signal producing a fifth signal, said one internal operational control line also connecting the output of said third fluidic amplifier to the output of said fluidic amplifier to feed back said fifth signal to cancel the remaining part of said first signal; and a comparator means connected to said internal operational control lines and adapted to be connected to said fluidic steering and diving connecting control lines to compare the fluidic failure detection system output and the fluidic steering and diving control operational system for deviations.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-06-18 | 1976-12-18 | 1977-06-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-06-18 | 1980-12-18 | 1981-06-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-06-18 | 1984-12-18 | 1985-06-19 | $7700.00 | Window Closed / Lapsed |