FR2256396A1 - Point-to-point aircraft navigation rulers - having scales corresponding to map, aircraft speed and time relationship - Google Patents
Point-to-point aircraft navigation rulers - having scales corresponding to map, aircraft speed and time relationshipInfo
- Publication number
- FR2256396A1 FR2256396A1 FR7347208A FR7347208A FR2256396A1 FR 2256396 A1 FR2256396 A1 FR 2256396A1 FR 7347208 A FR7347208 A FR 7347208A FR 7347208 A FR7347208 A FR 7347208A FR 2256396 A1 FR2256396 A1 FR 2256396A1
- Authority
- FR
- France
- Prior art keywords
- point
- aircraft
- rulers
- map
- ruler
- 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.)
- Withdrawn
Links
Classifications
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06G—ANALOGUE COMPUTERS
- G06G1/00—Hand manipulated computing devices
- G06G1/0005—Hand manipulated computing devices characterised by a specific application
- G06G1/0052—Hand manipulated computing devices characterised by a specific application for air navigation or sea navigation
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01C—MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
- G01C21/00—Navigation; Navigational instruments not provided for in groups G01C1/00 - G01C19/00
- G01C21/20—Instruments for performing navigational calculations
Landscapes
- Engineering & Computer Science (AREA)
- Radar, Positioning & Navigation (AREA)
- Remote Sensing (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Theoretical Computer Science (AREA)
- Ocean & Marine Engineering (AREA)
- Computer Hardware Design (AREA)
- Automation & Control Theory (AREA)
- Length-Measuring Instruments Using Mechanical Means (AREA)
- Traffic Control Systems (AREA)
- Drawing Aids And Blackboards (AREA)
Abstract
A set of calculating rulers consists of a series of n rulers. Each ruler is valid for a given speed vn (4) of the aircraft. Each ruler has a time scale (1a, 1b) graduated in a progressively increasing manner from one extremity of the ruler to the other extremity and in time unit to each graduation interval (5) being equal to vn x t x e where e is a coefficient equal to the scale of the map used. Each ruler also has a distance scale (2a, 2b) graduated in a progressively increasing manner from one extremity to the other and in distance unit 1 each graduation interval (7a, 7b) being equal to 1 x e. The rulers are used to determine the time required to cover a given distance for a given speed of the aircraft.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR7347208A FR2256396A1 (en) | 1973-12-28 | 1973-12-28 | Point-to-point aircraft navigation rulers - having scales corresponding to map, aircraft speed and time relationship |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR7347208A FR2256396A1 (en) | 1973-12-28 | 1973-12-28 | Point-to-point aircraft navigation rulers - having scales corresponding to map, aircraft speed and time relationship |
Publications (1)
Publication Number | Publication Date |
---|---|
FR2256396A1 true FR2256396A1 (en) | 1975-07-25 |
Family
ID=9130050
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR7347208A Withdrawn FR2256396A1 (en) | 1973-12-28 | 1973-12-28 | Point-to-point aircraft navigation rulers - having scales corresponding to map, aircraft speed and time relationship |
Country Status (1)
Country | Link |
---|---|
FR (1) | FR2256396A1 (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2620220A1 (en) * | 1987-09-08 | 1989-03-10 | Iscache Jacques | Direct-reading aeronautical rule |
GB2465016A (en) * | 2008-11-06 | 2010-05-12 | Lawrence John Meakins | Tide ruler |
-
1973
- 1973-12-28 FR FR7347208A patent/FR2256396A1/en not_active Withdrawn
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2620220A1 (en) * | 1987-09-08 | 1989-03-10 | Iscache Jacques | Direct-reading aeronautical rule |
GB2465016A (en) * | 2008-11-06 | 2010-05-12 | Lawrence John Meakins | Tide ruler |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
ST | Notification of lapse |