GB679714A - Improvements in or relating to axial-flow compressors and turbines - Google Patents
Improvements in or relating to axial-flow compressors and turbinesInfo
- Publication number
- GB679714A GB679714A GB1067049A GB1067049A GB679714A GB 679714 A GB679714 A GB 679714A GB 1067049 A GB1067049 A GB 1067049A GB 1067049 A GB1067049 A GB 1067049A GB 679714 A GB679714 A GB 679714A
- Authority
- GB
- United Kingdom
- Prior art keywords
- lugs
- blade
- rim
- ribs
- cut
- 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
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
- F01D5/00—Blades; Blade-carrying members; Heating, heat-insulating, cooling or antivibration means on the blades or the members
- F01D5/30—Fixing blades to rotors; Blade roots ; Blade spacers
- F01D5/3053—Fixing blades to rotors; Blade roots ; Blade spacers by means of pins
Abstract
679,714. Axial-flow compressors and turbines. ROLLS-ROYCE, Ltd. July 20, 1950 [April 21, 1949], No. 10670/49. Class 110(iii) A blade is attached to a rotor disc or drum by a pivot pin which has its axis substantially parallel to the plane containing the axes about which the blade crosssections have their minimum moment of inertia, or to the mean plane if these axes are not contained in a single plane. Each blade 23, Fig. 6. has two lugs 27 which are connected by a pin 28 to four ribs 29 on the rotor rim 22. For convenience o f manufacture the lugs and ribs preferably depart from true helical form, the lugs having plane surfaces and the ribs being formed by cutting straight slots in the rim 22 by means of a milling cutter. Cuts a 1 , and b 1 , Fig. 5, spaced apart by a distance equal to the spacing of the lugs 27 of a blade, are made from opposite edges of the rim 22, each cut ending short of the opposite edge. Further cuts a 2 , a 3 ... an and b2 ... b n-1 , bn are made, so that each cut (e.g., a 3 ) runs into an opposite cut (e.g. b 1 ), but with a slight lateral displacement resulting in each end portion 29a of a rib 29 being slightly thicker than the middle portion 29b. Specification 621,315 is referred to.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1067049A GB679714A (en) | 1949-04-21 | 1949-04-21 | Improvements in or relating to axial-flow compressors and turbines |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1067049A GB679714A (en) | 1949-04-21 | 1949-04-21 | Improvements in or relating to axial-flow compressors and turbines |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB679714A true GB679714A (en) | 1952-09-24 |
Family
ID=9972110
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1067049A Expired GB679714A (en) | 1949-04-21 | 1949-04-21 | Improvements in or relating to axial-flow compressors and turbines |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB679714A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2925997A (en) * | 1953-05-27 | 1960-02-23 | Rolls Royce | Rotors for axial-flow fluid machines with pivoted blades and blade pivot retaining means |
| US2980395A (en) * | 1953-04-10 | 1961-04-18 | Rolls Royce | Rotor with pivoted blades for compressors and turbines |
-
1949
- 1949-04-21 GB GB1067049A patent/GB679714A/en not_active Expired
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2980395A (en) * | 1953-04-10 | 1961-04-18 | Rolls Royce | Rotor with pivoted blades for compressors and turbines |
| US2925997A (en) * | 1953-05-27 | 1960-02-23 | Rolls Royce | Rotors for axial-flow fluid machines with pivoted blades and blade pivot retaining means |
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