GB191229669A - A Depression Range and Position Finder for use upon Aeroplanes, Dirigibles, or the like. - Google Patents
A Depression Range and Position Finder for use upon Aeroplanes, Dirigibles, or the like.Info
- Publication number
- GB191229669A GB191229669A GB191229669DA GB191229669A GB 191229669 A GB191229669 A GB 191229669A GB 191229669D A GB191229669D A GB 191229669DA GB 191229669 A GB191229669 A GB 191229669A
- Authority
- GB
- United Kingdom
- Prior art keywords
- range
- target
- mirror
- over
- reflection
- 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
Abstract
29,669. Barr, A., and Stroud, W. Dec. 24. Sextants.-To determine the position and range of an inaccessible target T, an aeroplane or like is sent up with instructions to the pilot to steer over two definite points A, B, Fig. 1, the range being determined for a standard height over each point, or the pilot steers over a single point A, Fig. 2, first to get the range, and then at right-angles to his former course to get the target's bearing. The range-finding instrument employed is of the depression type and comprises, as shown, a halfsilvered mirror 1, in which the target is seen by reflection from an adjustable mirror 2 and through which the operator looks to get the horizontal from the pendulum-suspended system 5, 6. If a pentagonal prism 7 is employed with a silvered surface 8 and with a wedge 10 joined on to it at a halfsilvered face, the operator can, at the same time, get a view vertically downwards. In a modification, the reflector 2 is partly transparent, and the operat r looks through this at the target and gets his horizontal by reflection in the mirror.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB191229669T | 1912-12-24 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB191229669A true GB191229669A (en) | 1913-12-18 |
Family
ID=32576227
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB191229669D Expired GB191229669A (en) | 1912-12-24 | 1912-12-24 | A Depression Range and Position Finder for use upon Aeroplanes, Dirigibles, or the like. |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB191229669A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2517779A (en) * | 1946-10-03 | 1950-08-08 | Earl E Flint | Aircraft landing instrument having an optical sight |
| US2855818A (en) * | 1954-07-29 | 1958-10-14 | Askania Werke Ag | Altitude reading means for a theodolite |
| US3276311A (en) * | 1962-12-04 | 1966-10-04 | James L Buckmaster | Optical plumbing device for establishing from an aerial location the position of a mark on the ground |
-
1912
- 1912-12-24 GB GB191229669D patent/GB191229669A/en not_active Expired
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2517779A (en) * | 1946-10-03 | 1950-08-08 | Earl E Flint | Aircraft landing instrument having an optical sight |
| US2855818A (en) * | 1954-07-29 | 1958-10-14 | Askania Werke Ag | Altitude reading means for a theodolite |
| US3276311A (en) * | 1962-12-04 | 1966-10-04 | James L Buckmaster | Optical plumbing device for establishing from an aerial location the position of a mark on the ground |
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