GB644524A - Improvements in and relating to the power transmission systems of multi-rotor helicopters - Google Patents
Improvements in and relating to the power transmission systems of multi-rotor helicoptersInfo
- Publication number
- GB644524A GB644524A GB13137/48A GB1313748A GB644524A GB 644524 A GB644524 A GB 644524A GB 13137/48 A GB13137/48 A GB 13137/48A GB 1313748 A GB1313748 A GB 1313748A GB 644524 A GB644524 A GB 644524A
- Authority
- GB
- United Kingdom
- Prior art keywords
- rotors
- engine
- rotor
- driven
- gearing
- 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
- B64C27/12—Rotor drives
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Aviation & Aerospace Engineering (AREA)
- Transmission Devices (AREA)
Abstract
644,524. Multi-rotor helicopters. CIERVA AUTOGIRO CO., Ltd., PULLIN, C. G., and WATSON, K. May 13, 1948, No. 13137. [Class 4] In a multi-rotor helicopter with two or more groups of horizontally spaced lifting rotors, the latter are so arranged that in normal operation their resultant lift vector passes through or close to the centre of gravity of the machine, and each group of rotors is driven by a separate engine independently of the other groups, so that in the event of failure of any engine the others continue to drive the remaining rotors which are disposed in a symmetrical manner with respect to the centre of gravity. In the arrangement shown, the helicopter is provided with four lifting rotors 1, 2, 3, 4 arranged in diamond formation in plan, the forward and rearward rotors 1, 2 being driven by an engine 8 through gearing 11 and a central fore-and-aft shaft 10, while the intermediate side-by-side rotors 3, 4 are driven by a separate engine 9 through gearing 13 and a transverse shaft 12. One-way clutches 14, 15 are provided for the respective engines, or such a clutch may be provided in each rotor hub assembly, to enable the rotors coupled to the engine which fails to auto-rotate and thus generate a symmetrical lift, for which purpose each rotor is provided with conventional cyclic and collective pitch control mechanism.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB13137/48A GB644524A (en) | 1948-05-13 | 1948-05-13 | Improvements in and relating to the power transmission systems of multi-rotor helicopters |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB13137/48A GB644524A (en) | 1948-05-13 | 1948-05-13 | Improvements in and relating to the power transmission systems of multi-rotor helicopters |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB644524A true GB644524A (en) | 1950-10-11 |
Family
ID=10017509
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB13137/48A Expired GB644524A (en) | 1948-05-13 | 1948-05-13 | Improvements in and relating to the power transmission systems of multi-rotor helicopters |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB644524A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3253806A (en) * | 1964-05-20 | 1966-05-31 | Eickmann Karl | Control means in a hydraulic driven helicopter |
-
1948
- 1948-05-13 GB GB13137/48A patent/GB644524A/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3253806A (en) * | 1964-05-20 | 1966-05-31 | Eickmann Karl | Control means in a hydraulic driven helicopter |
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