GB933359A - Method and apparatus for testing the size of an aperture - Google Patents
Method and apparatus for testing the size of an apertureInfo
- Publication number
- GB933359A GB933359A GB937261A GB937261A GB933359A GB 933359 A GB933359 A GB 933359A GB 937261 A GB937261 A GB 937261A GB 937261 A GB937261 A GB 937261A GB 933359 A GB933359 A GB 933359A
- Authority
- GB
- United Kingdom
- Prior art keywords
- aperture
- size
- vane
- air
- march
- 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
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B13/00—Measuring arrangements characterised by the use of fluids
- G01B13/20—Measuring arrangements characterised by the use of fluids for measuring areas, e.g. pneumatic planimeters
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Casting Or Compression Moulding Of Plastics Or The Like (AREA)
Abstract
933,359. Pneumatic gauging. ROLLSROYCE Ltd. March 13, 1962 [March 14, 1961], No. 9372/61. Class 106 (2). A method of determining the minimum size of an aperture in a member such as nozzle guide vane 20, Fig. 1, comprises supplying air to chamber 30 at constant rate through inlet 31, allowing the air to pass through vane 20, when valve 33 is open, and opening bleed port 36 a sufficient amount to cause the pressure in the chamber 30 to be maintained at a value equal to the zero 35 of manometer 34. A scale 40 is provided to indicate how far bleed port 36 was opened and hence the size of the aperture in the apertured member. A block 43 of known size may be inserted in the aperture. The vane 20 may have apertures or throats 27 which are open to the atmosphere on one side. This side may be closed by a member 44 of known size in order to determine the size of aperture 27. A compensating valve (Figs. 6-10, not shown) may be provided in member 44, which allows escape of air from throat 27 to atmosphere by an amount depending on the variation in length X thus compensating for errors, within the manufacturing tolerance in X.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB937261A GB933359A (en) | 1961-03-14 | 1961-03-14 | Method and apparatus for testing the size of an aperture |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB937261A GB933359A (en) | 1961-03-14 | 1961-03-14 | Method and apparatus for testing the size of an aperture |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB933359A true GB933359A (en) | 1963-08-08 |
Family
ID=9870705
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB937261A Expired GB933359A (en) | 1961-03-14 | 1961-03-14 | Method and apparatus for testing the size of an aperture |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB933359A (en) |
-
1961
- 1961-03-14 GB GB937261A patent/GB933359A/en not_active Expired
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