FR528957A - Dispositif pour améliorer le rendement des hélices propulsives ou tractives et des autres appareils hélicoidaux similaires - Google Patents
Dispositif pour améliorer le rendement des hélices propulsives ou tractives et des autres appareils hélicoidaux similairesInfo
- Publication number
- FR528957A FR528957A FR528957A FR528957DA FR528957A FR 528957 A FR528957 A FR 528957A FR 528957 A FR528957 A FR 528957A FR 528957D A FR528957D A FR 528957DA FR 528957 A FR528957 A FR 528957A
- Authority
- FR
- France
- Prior art keywords
- propulsion
- improving
- efficiency
- similar helical
- helical devices
- 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
- B64—AIRCRAFT; AVIATION; COSMONAUTICS
- B64C—AEROPLANES; HELICOPTERS
- B64C11/00—Propellers, e.g. of ducted type; Features common to propellers and rotors for rotorcraft
- B64C11/16—Blades
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B64—AIRCRAFT; AVIATION; COSMONAUTICS
- B64C—AEROPLANES; HELICOPTERS
- B64C11/00—Propellers, e.g. of ducted type; Features common to propellers and rotors for rotorcraft
- B64C11/46—Arrangements of, or constructional features peculiar to, multiple propellers
- B64C11/48—Units of two or more coaxial propellers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63H—MARINE PROPULSION OR STEERING
- B63H5/00—Arrangements on vessels of propulsion elements directly acting on water
- B63H5/07—Arrangements on vessels of propulsion elements directly acting on water of propellers
- B63H5/08—Arrangements on vessels of propulsion elements directly acting on water of propellers of more than one propeller
- B63H5/10—Arrangements on vessels of propulsion elements directly acting on water of propellers of more than one propeller of coaxial type, e.g. of counter-rotative type
- B63H2005/103—Arrangements on vessels of propulsion elements directly acting on water of propellers of more than one propeller of coaxial type, e.g. of counter-rotative type of co-rotative type, i.e. rotating in the same direction, e.g. twin propellers
Landscapes
- Engineering & Computer Science (AREA)
- Aviation & Aerospace Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- Ocean & Marine Engineering (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR528957T | 1920-12-23 |
Publications (1)
Publication Number | Publication Date |
---|---|
FR528957A true FR528957A (fr) | 1921-11-22 |
Family
ID=8922402
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR528957A Expired FR528957A (fr) | 1920-12-23 | 1920-12-23 | Dispositif pour améliorer le rendement des hélices propulsives ou tractives et des autres appareils hélicoidaux similaires |
Country Status (1)
Country | Link |
---|---|
FR (1) | FR528957A (fr) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4619584A (en) * | 1981-03-05 | 1986-10-28 | Ab Volvo Penta | Double propeller drive for boats |
US4623299A (en) * | 1984-01-14 | 1986-11-18 | Harmstorf Ag | Driving arrangement for watercraft |
-
1920
- 1920-12-23 FR FR528957A patent/FR528957A/fr not_active Expired
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4619584A (en) * | 1981-03-05 | 1986-10-28 | Ab Volvo Penta | Double propeller drive for boats |
US4623299A (en) * | 1984-01-14 | 1986-11-18 | Harmstorf Ag | Driving arrangement for watercraft |
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