FR2247731A1 - Ship wind speed measuring instrument - has two potentiometer assemblies controlled by voltage comparator operated motor - Google Patents
Ship wind speed measuring instrument - has two potentiometer assemblies controlled by voltage comparator operated motorInfo
- Publication number
- FR2247731A1 FR2247731A1 FR7337643A FR7337643A FR2247731A1 FR 2247731 A1 FR2247731 A1 FR 2247731A1 FR 7337643 A FR7337643 A FR 7337643A FR 7337643 A FR7337643 A FR 7337643A FR 2247731 A1 FR2247731 A1 FR 2247731A1
- Authority
- FR
- France
- Prior art keywords
- voltage comparator
- wind speed
- measuring instrument
- speed measuring
- wind
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
- G01P5/00—Measuring speed of fluids, e.g. of air stream; Measuring speed of bodies relative to fluids, e.g. of ship, of aircraft
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
- G01P13/00—Indicating or recording presence, absence, or direction, of movement
- G01P13/02—Indicating direction only, e.g. by weather vane
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06G—ANALOGUE COMPUTERS
- G06G7/00—Devices in which the computing operation is performed by varying electric or magnetic quantities
- G06G7/48—Analogue computers for specific processes, systems or devices, e.g. simulators
- G06G7/78—Analogue computers for specific processes, systems or devices, e.g. simulators for direction-finding, locating, distance or velocity measuring, or navigation systems
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Computer Hardware Design (AREA)
- Theoretical Computer Science (AREA)
- Radar, Positioning & Navigation (AREA)
- Remote Sensing (AREA)
- Mathematical Physics (AREA)
- Aviation & Aerospace Engineering (AREA)
- Indicating Or Recording The Presence, Absence, Or Direction Of Movement (AREA)
Abstract
The sensors provide signals whose voltage are proportional to the on-route speed (V) of the ship, the apparent speed (W) of the wind and the apparent direction (A) of the wind. The instrument can also give the true direction (a + b) of the wind with respect to the route of the ship. The instrument has two assemblies, each of which has a sinusoidal potentiometer (3) and a linear potentiometer (4), and each of which has a voltage comparator (5) which can drive a motor (6) coupled to the potentiometers (3, 4). The two assemblies cooperate so that one sinusoidal potentiometer delivers a voltage proportional to the boat speed and to the cosine of the angle between the true wind direction and the boat direction.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR7337643A FR2247731A1 (en) | 1973-10-16 | 1973-10-16 | Ship wind speed measuring instrument - has two potentiometer assemblies controlled by voltage comparator operated motor |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR7337643A FR2247731A1 (en) | 1973-10-16 | 1973-10-16 | Ship wind speed measuring instrument - has two potentiometer assemblies controlled by voltage comparator operated motor |
Publications (2)
Publication Number | Publication Date |
---|---|
FR2247731A1 true FR2247731A1 (en) | 1975-05-09 |
FR2247731B1 FR2247731B1 (en) | 1976-10-01 |
Family
ID=9126762
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR7337643A Granted FR2247731A1 (en) | 1973-10-16 | 1973-10-16 | Ship wind speed measuring instrument - has two potentiometer assemblies controlled by voltage comparator operated motor |
Country Status (1)
Country | Link |
---|---|
FR (1) | FR2247731A1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2642842A1 (en) * | 1989-01-18 | 1990-08-10 | Crouzet Sa | METHOD FOR DETERMINING THE AVERAGE WIND SPEED IN RELATION TO THE FLOOR DURING THE FLIGHT OF AN AIRCRAFT |
-
1973
- 1973-10-16 FR FR7337643A patent/FR2247731A1/en active Granted
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2642842A1 (en) * | 1989-01-18 | 1990-08-10 | Crouzet Sa | METHOD FOR DETERMINING THE AVERAGE WIND SPEED IN RELATION TO THE FLOOR DURING THE FLIGHT OF AN AIRCRAFT |
EP0389305A2 (en) * | 1989-01-18 | 1990-09-26 | Sextant Avionique S.A. | Procedure to determine average windspeed relative to the ground in a flying aircraft |
EP0389305A3 (en) * | 1989-01-18 | 1990-10-24 | Sextant Avionique S.A. | Procedure to determine average windspeed relative to the ground in a flying aircraft |
US5091871A (en) * | 1989-01-18 | 1992-02-25 | Sextant Avionique | Method of determining the mean wind speed with respect to the ground during the flight of an aircraft |
Also Published As
Publication number | Publication date |
---|---|
FR2247731B1 (en) | 1976-10-01 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
AU502364B2 (en) | Apparatus for determining rotational or linear stiffness | |
SE7509388L (en) | HYDROSTATIC PROPULSION SYSTEM | |
CA1026163A (en) | Boat hull construction | |
CA1034191A (en) | Wide range high accuracy electronically programmed speed control system | |
CA1013055A (en) | Excitation control arrangement for diesel-electric propulsion systems | |
SE7611510L (en) | ANGLE INDICATOR OR TACHOMETER | |
IT1092226B (en) | IMPROVEMENT IN THE DEVICES FOR THE INSTALLATION OF IN-OUTBOARD MOTORS ON BOATS IN PARTICULAR SAILING | |
BE828884A (en) | MARINE PROPULSION DEVICE SUITABLE FOR SAILBOATS | |
KR870004352A (en) | Position controller | |
CA1026859A (en) | Railway signal system with speed determined movement detector | |
AT339164B (en) | SINGLE RUDDER, ESPECIALLY FOR ARRANGEMENT BEHIND A SHIP'S SCREW | |
AU498650B2 (en) | Segmental sail for boats | |
FR2247731A1 (en) | Ship wind speed measuring instrument - has two potentiometer assemblies controlled by voltage comparator operated motor | |
NO140623C (en) | CATAMARAN WITH SEVERAL DRIVE PROPELLERS. | |
IT1039656B (en) | BULRO AFT FOR SHIPS | |
SE7505844L (en) | Stern CONSTRUCTION ON SHIPS. | |
NL7706597A (en) | SHIP PROPELLER WITH ADJUSTABLE SPEED | |
SE7506708L (en) | CONTINUOUS DRIVING SYSTEM WITH VARIABLE SPEED. | |
NL7501637A (en) | SHIP PROPELLER WITH ADJUSTABLE SPEED | |
GB1148548A (en) | Method and apparatus for determining the direction of motion of a moving object | |
CA1027011A (en) | Propeller pitch control apparatus | |
FR2320594A1 (en) | Cutting of extruded clay for ceramic industry - giving a very high accuracy in cutting length | |
NO138841C (en) | AXLE-HUB CONNECTION FOR MARINE PROPELLER | |
AU492232B2 (en) | Marine propulsion device adapted'fora sailboat | |
DE68903057D1 (en) | SHIP COMPASS ROTATION SPEED INDICATOR. |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
ST | Notification of lapse |