GB190924888A - Improvements in Aerial Machines. - Google Patents
Improvements in Aerial Machines.Info
- Publication number
- GB190924888A GB190924888A GB190924888DA GB190924888A GB 190924888 A GB190924888 A GB 190924888A GB 190924888D A GB190924888D A GB 190924888DA GB 190924888 A GB190924888 A GB 190924888A
- Authority
- GB
- United Kingdom
- Prior art keywords
- blades
- piece
- propeller
- wires
- fabric
- 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
- B64—AIRCRAFT; AVIATION; COSMONAUTICS
- B64C—AEROPLANES; HELICOPTERS
- B64C27/00—Rotorcraft; Rotors peculiar thereto
- B64C27/04—Helicopters
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Aviation & Aerospace Engineering (AREA)
- Other Liquid Machine Or Engine Such As Wave Power Use (AREA)
Abstract
24,888. Lister, E. Oct. 29. Screw propellers.-In an aerial machine supported by two screw propellers rotating in opposite directions on concentric shafts, each propeller comprises four triangular blades, the gap between adjoining blades being of about one-fourth of the width of a blade. The frame of each blade is formed of a central radial arm c, T-shaped in cross-section, and curved on the upper side, a flat curved circumferential piece d, and two flat pieces d<1> connecting the ends of the piece d to the middle of the arm c. To prevent the formation of eddies by the downwardly-extending web3 of the T-section arms c, these webs are covered with strips of fabric joined at their edges to the fabric of the blades. The ends of each piece d are connected by cords or wires e to the central hub to form supports for the edges of the fabric of the blades. Stay cords or wires n, s', m, m<2> also connect the ends and centre of each piece d to the propeller shafts above and below the blades. The cords or wires n above the upper propeller are attached to a plate o, formed as a nut, which can be raised or lowered to adjust the tension by turning a screw p, which bears against a block fixed within the propeller shaft.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB190924888T | 1909-10-29 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB190924888A true GB190924888A (en) | 1910-10-20 |
Family
ID=32446421
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB190924888D Expired GB190924888A (en) | 1909-10-29 | 1909-10-29 | Improvements in Aerial Machines. |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB190924888A (en) |
-
1909
- 1909-10-29 GB GB190924888D patent/GB190924888A/en not_active Expired
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