GB289897A - - Google Patents
Info
- Publication number
- GB289897A GB289897A GB13255/28A GB1325528A GB289897A GB 289897 A GB289897 A GB 289897A GB 13255/28 A GB13255/28 A GB 13255/28A GB 1325528 A GB1325528 A GB 1325528A GB 289897 A GB289897 A GB 289897A
- Authority
- GB
- United Kingdom
- Prior art keywords
- pitch
- equal
- suction
- blades
- face
- 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
- B63H1/18—Propellers with means for diminishing cavitation, e.g. supercavitation
-
- 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
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)
- Rotary Pumps (AREA)
Abstract
289,897. Braat, W., (Assignee of Engstrand, G. C.). May 6, 1927, [Convention date]. Screw propellers.-Screw propeller blades are constructed with an increasing pitch from tip to root on the suction face, with blades of widths equal to the clearance between the adjacent blades at corresponding radii, with the suction pitch equal to a constant pitch multiplied by the secant of the angle of inclination at each radial distance, and with the pressure pitch equal to the suction pitch multiplied by the secant of its angle, of inclination. The pitch of the blade section 12 at the tip is equal to the distance C between adjacent blades. V represents the pitch of propeller advance, P the pitch of the suction face and P<1> the pitch of the pressure face and P = R Î V ¸ (R<2>-V<2>)¢whilst P<1> = RÎP ¸ (R<2>-P<2>)¢ for a given section at radial distance R.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US289897TA | 1927-05-06 | 1927-05-06 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB289897A true GB289897A (en) | 1929-07-18 |
Family
ID=31945756
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB13255/28A Expired GB289897A (en) | 1927-05-06 | 1928-05-05 |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB289897A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20170274971A1 (en) * | 2016-03-25 | 2017-09-28 | Indigo Power Systems Llc | Marine propeller |
-
1928
- 1928-05-05 GB GB13255/28A patent/GB289897A/en not_active Expired
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20170274971A1 (en) * | 2016-03-25 | 2017-09-28 | Indigo Power Systems Llc | Marine propeller |
| US10710688B2 (en) * | 2016-03-25 | 2020-07-14 | Indigo Power Systems, LLC | Marine propeller |
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