GB273198A - Apparatus for the mechanical solution of trigonometrical problems - Google Patents
Apparatus for the mechanical solution of trigonometrical problemsInfo
- Publication number
- GB273198A GB273198A GB327627A GB327627A GB273198A GB 273198 A GB273198 A GB 273198A GB 327627 A GB327627 A GB 327627A GB 327627 A GB327627 A GB 327627A GB 273198 A GB273198 A GB 273198A
- Authority
- GB
- United Kingdom
- Prior art keywords
- arms
- arm
- cursors
- cursor
- 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.)
- Expired
Links
- 239000013598 vector Substances 0.000 abstract 1
Classifications
-
- 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)
- Automation & Control Theory (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Aerodynamic Tests, Hydrodynamic Tests, Wind Tunnels, And Water Tanks (AREA)
Abstract
273,198. Addison, H., and Luard, W. B. Feb. 4, 1927. Addition to 264,755. Plane trigonometry calculators.- The vector-triangle solving apparatus of the parent Specification is modified to enable the resultant quantities to be indicated automatically after the course settings have been made. For this purpose one of the arms is dispensed with and all the cursors of the four remaining arms are linked together. As shown in the Figure, there are only two arms, namely d and q, to represent the courses steered. The cursor e on arm d is provided with a drift angle scale and a pointer g connected by an extensible link with the wind cursor l at k. Another drift angle scale concentric with the base is carried by the arm q at its outer end to enable the ground course arm d<2> to be set. As in the parent case the three cursors r, s, l are connected by a pantograph linkage t so that after the arms q and d have been set to the respective air courses and the arms d<2> and g to the corresponding drift angles, the wind and ground speed vectors can immediately be read off by reference to the arms m and d<2>.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB327627A GB273198A (en) | 1927-02-04 | 1927-02-04 | Apparatus for the mechanical solution of trigonometrical problems |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB327627A GB273198A (en) | 1927-02-04 | 1927-02-04 | Apparatus for the mechanical solution of trigonometrical problems |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB273198A true GB273198A (en) | 1927-06-30 |
Family
ID=9755270
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB327627A Expired GB273198A (en) | 1927-02-04 | 1927-02-04 | Apparatus for the mechanical solution of trigonometrical problems |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB273198A (en) |
-
1927
- 1927-02-04 GB GB327627A patent/GB273198A/en not_active Expired
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