GB557434A - Testing apparatus for ascertaining the balance of the blades of air screws - Google Patents
Testing apparatus for ascertaining the balance of the blades of air screwsInfo
- Publication number
- GB557434A GB557434A GB953142A GB953142A GB557434A GB 557434 A GB557434 A GB 557434A GB 953142 A GB953142 A GB 953142A GB 953142 A GB953142 A GB 953142A GB 557434 A GB557434 A GB 557434A
- Authority
- GB
- United Kingdom
- Prior art keywords
- blade
- spindle
- balance
- block
- carrier
- 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
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M1/00—Testing static or dynamic balance of machines or structures
- G01M1/12—Static balancing; Determining position of centre of gravity
Landscapes
- Engineering & Computer Science (AREA)
- Aviation & Aerospace Engineering (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Testing Of Balance (AREA)
Abstract
557,434. Testing balance. AVERY, Ltd., W. & T., and BOWEN, E. July 9, 1942, No. 9531. [Class 106 (ii)] [Also in Group XX] An apparatus for testing the balance, the centre of gravity or predetermined turning moment of an air screw comprises a rotatable blade carrier adjustable to admit of a test in both a horizontal and vertical disposition and means for interconnecting the carrier with a weighing apparatus. A carrier block d has seceured to one face a counterbalancing arm e with adjustable weight e<SP>1</SP> and to the opposite face a part for receiving a hub d<SP>1</SP> which in turn receives the butt of an air screw blade f. The carrier block d may turn about a spindle g in one with coaxial knife edges e<SP>2</SP> in bearings c. The block may be clamped to the spindle by friction between a fibre shoe h and the spindle, the friction being regulated by a screw and spring j, j<SP>1</SP>. The spindle g is extended at right angles at one end to form a lever k which is connected by a link l to the lever system m of a weighing apparatus n reading plus or minus each side of "zero". The blade f and arm e may be arranged either horizontally as shown or vertically, a locking pin o engaging a hole o<SP>1</SP> (not shown) or o<SP>2</SP> to lock the device in one or other position while adjustments are made. A pointer d<SP>2</SP> reading against a mark a<SP>1</SP> indicates when balance is attained. The end of the lever k may be gripped and held by a spring grip p<SP>3</SP>, q operated from a handle p through spindle p<SP>1</SP> and toothed gear and cam. In use, a standard blade is secured to the block and the weight e<SP>1</SP> moved to effect balance, the pointer n<SP>1</SP> being adjusted to zero. The blade to be tested is substituted for the standard and the grip p<SP>3</SP> released so that the pointer n<SP>1</SP> may indicate the differences. The block and blade are then turned through 90 degrees and the experiment repeated with the blade in a vertical position. For the initial calibration, an arm from which are supported base weights may be used secured in the position of the blade.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB953142A GB557434A (en) | 1942-07-09 | 1942-07-09 | Testing apparatus for ascertaining the balance of the blades of air screws |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB953142A GB557434A (en) | 1942-07-09 | 1942-07-09 | Testing apparatus for ascertaining the balance of the blades of air screws |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB557434A true GB557434A (en) | 1943-11-19 |
Family
ID=9873795
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB953142A Expired GB557434A (en) | 1942-07-09 | 1942-07-09 | Testing apparatus for ascertaining the balance of the blades of air screws |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB557434A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5187976A (en) * | 1991-08-16 | 1993-02-23 | The Babcock & Wilcox Company | Mass-moment weighing beam |
| US5195363A (en) * | 1991-08-16 | 1993-03-23 | The Babcock & Wilcox Company | Automated mass-moment weighing system for jet engine blades |
| EP2233904A1 (en) * | 2009-03-25 | 2010-09-29 | Siemens Aktiengesellschaft | Arrangement to determine a static moment of a blade |
| EP2657670A1 (en) * | 2012-04-24 | 2013-10-30 | Siemens Aktiengesellschaft | Reference standard for calibrating a moment weight scale |
| CN105644801A (en) * | 2014-11-14 | 2016-06-08 | 江西昌河航空工业有限公司 | Adjustment method for helicopter rotor single blade interchange |
-
1942
- 1942-07-09 GB GB953142A patent/GB557434A/en not_active Expired
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5187976A (en) * | 1991-08-16 | 1993-02-23 | The Babcock & Wilcox Company | Mass-moment weighing beam |
| US5195363A (en) * | 1991-08-16 | 1993-03-23 | The Babcock & Wilcox Company | Automated mass-moment weighing system for jet engine blades |
| EP2233904A1 (en) * | 2009-03-25 | 2010-09-29 | Siemens Aktiengesellschaft | Arrangement to determine a static moment of a blade |
| EP2657670A1 (en) * | 2012-04-24 | 2013-10-30 | Siemens Aktiengesellschaft | Reference standard for calibrating a moment weight scale |
| CN105644801A (en) * | 2014-11-14 | 2016-06-08 | 江西昌河航空工业有限公司 | Adjustment method for helicopter rotor single blade interchange |
| CN105644801B (en) * | 2014-11-14 | 2017-08-25 | 江西昌河航空工业有限公司 | A kind of method of adjustment of lifting airscrew interchange |
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