GB628861A - Improvements in or relating to torque counteracting rotors for helicopters - Google Patents
Improvements in or relating to torque counteracting rotors for helicoptersInfo
- Publication number
- GB628861A GB628861A GB8225/47A GB822547A GB628861A GB 628861 A GB628861 A GB 628861A GB 8225/47 A GB8225/47 A GB 8225/47A GB 822547 A GB822547 A GB 822547A GB 628861 A GB628861 A GB 628861A
- Authority
- GB
- United Kingdom
- Prior art keywords
- rotors
- auxiliary
- rotor
- pitch
- helicopters
- 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
- B64C27/82—Rotorcraft; Rotors peculiar thereto characterised by the provision of an auxiliary rotor or fluid-jet device for counter-balancing lifting rotor torque or changing direction of rotorcraft
Abstract
628,861. Helicopters. FIRESTONE TIRE & RUBBER CO. March 26, 1947, No. 8225. Convention date, April 17, 1946. [Class 4] In order to balance the reaction torque of the lifting rotor 12 of a helicopter, two auxiliary rotors 17a, 17b are mounted on a common transverse axis and are located below the main rotor exteriorily of the fuselage 7 so as to be subjected to the unobstructed downwash of the main rotor. The blades of the auxiliary. rotors are of variable pitch, one form of pitch control, Fig. 3, comprising axial shafts 35a, 35b connected to pitch control arms 33 and displaceable by a pivoted member 37 connected by a link 40 to a screw-member 45 engaging a sleeve operated by chain-and-sprocket 43, 44. In a modification, Fig. 4 (not shown), a chain and sprocket actuates shafts mounted parallel to the axis of the auxiliary rotors and connected by links to axially-displaceable hub sleeves by which the rotor pitch is varied. In order to prevent interference the distance between the auxiliary rotors is approximately equal to their diameter.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US628861XA | 1946-04-17 | 1946-04-17 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB628861A true GB628861A (en) | 1949-09-06 |
Family
ID=22045481
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB8225/47A Expired GB628861A (en) | 1946-04-17 | 1947-03-26 | Improvements in or relating to torque counteracting rotors for helicopters |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB628861A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2148818A (en) * | 1983-10-26 | 1985-06-05 | Agusta Aeronaut Costr | Helicopter countertorque rotor drive |
| GB2148819A (en) * | 1983-10-26 | 1985-06-05 | Agusta Aeronaut Costr | Helicopter countertorque rotor assembly |
| CN111645875A (en) * | 2020-04-22 | 2020-09-11 | 中国直升机设计研究所 | Helicopter emergency waterline and position design method thereof |
-
1947
- 1947-03-26 GB GB8225/47A patent/GB628861A/en not_active Expired
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2148818A (en) * | 1983-10-26 | 1985-06-05 | Agusta Aeronaut Costr | Helicopter countertorque rotor drive |
| GB2148819A (en) * | 1983-10-26 | 1985-06-05 | Agusta Aeronaut Costr | Helicopter countertorque rotor assembly |
| CN111645875A (en) * | 2020-04-22 | 2020-09-11 | 中国直升机设计研究所 | Helicopter emergency waterline and position design method thereof |
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