GB362198A - Improvements in or relating to screw propellers - Google Patents
Improvements in or relating to screw propellersInfo
- Publication number
- GB362198A GB362198A GB245/31A GB24531A GB362198A GB 362198 A GB362198 A GB 362198A GB 245/31 A GB245/31 A GB 245/31A GB 24531 A GB24531 A GB 24531A GB 362198 A GB362198 A GB 362198A
- Authority
- GB
- United Kingdom
- Prior art keywords
- root
- tip
- leading
- taper
- thickness
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63H—MARINE PROPULSION OR STEERING
- B63H1/00—Propulsive elements directly acting on water
- B63H1/02—Propulsive elements directly acting on water of rotary type
- B63H1/12—Propulsive elements directly acting on water of rotary type with rotation axis substantially in propulsive direction
- B63H1/14—Propellers
- B63H1/26—Blades
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63H—MARINE PROPULSION OR STEERING
- B63H1/00—Propulsive elements directly acting on water
- B63H1/02—Propulsive elements directly acting on water of rotary type
- B63H1/12—Propulsive elements directly acting on water of rotary type with rotation axis substantially in propulsive direction
- B63H1/14—Propellers
- B63H1/20—Hubs; Blade connections
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- Ocean & Marine Engineering (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
362,198. Screw propellers and fans. WESTINGHOUSE ELECTRIC & MANUFACTURING CO., East Pitts burg, U.S.A.- (Assignees of Schmidt, H. F. ; 85, South Lansdowne Avenue, Lansdowne, Pennsylvania, U.S.A.) Jan. 2, 1931. No. 245. Convention date, Jan. 11, 1930. [Class 114.] A screw propeller blade has straight leading and trailing edges which diverge from their root to tip and the radial cross sections are of substantially uniform thickness with a working surface radially concaved toward the other oppositely disposed surface. Each blade 11 has a diverging leading and trailing edge 12, 13 whereby the tip 14 is substantially greater in length than the root portion 15 and whereby the projected area is a substantial percentage of the disc area. The blade decreases in thickness from the root 15 to the tip 14 and is radially concaved, the decrease in thickness from root to tip is variable and results in a curved taper. In place of a continuous curve the taper may be made up of three straight sided taper sections 17, 18, 19 joined by curves 21, 22 of large radii. Preferably the projected area is about 2/3rds of the disc area and the radial pitch is constant but the axial pitch increases from the leading to the trailing edge. The blades are formed separately with an enlarged root 15 which is secured in a groove in the hub. The hub is formed as a hollow cylinder 10 having an inner boss 34 which is stiffened by discs 35, 36.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US362198XA | 1930-01-11 | 1930-01-11 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB362198A true GB362198A (en) | 1931-12-03 |
Family
ID=21887341
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB245/31A Expired GB362198A (en) | 1930-01-11 | 1931-01-02 | Improvements in or relating to screw propellers |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB362198A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107237760A (en) * | 2017-08-09 | 2017-10-10 | 重庆博张机电设备有限公司 | A kind of vertical pump for liquid salts |
-
1931
- 1931-01-02 GB GB245/31A patent/GB362198A/en not_active Expired
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107237760A (en) * | 2017-08-09 | 2017-10-10 | 重庆博张机电设备有限公司 | A kind of vertical pump for liquid salts |
| CN107237760B (en) * | 2017-08-09 | 2023-07-04 | 重庆博张机电设备有限公司 | Vertical molten salt pump |
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