GB991744A - Improvements in or relating to propellers - Google Patents
Improvements in or relating to propellersInfo
- Publication number
- GB991744A GB991744A GB2086860A GB2086860A GB991744A GB 991744 A GB991744 A GB 991744A GB 2086860 A GB2086860 A GB 2086860A GB 2086860 A GB2086860 A GB 2086860A GB 991744 A GB991744 A GB 991744A
- Authority
- GB
- United Kingdom
- Prior art keywords
- blade
- impeller
- pitch
- torque
- twist
- 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
- B64C11/00—Propellers, e.g. of ducted type; Features common to propellers and rotors for rotorcraft
- B64C11/30—Blade pitch-changing mechanisms
Landscapes
- Engineering & Computer Science (AREA)
- Aviation & Aerospace Engineering (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
991,744. Axial-flow compressors and fans. H. T. GRUT. June 9, 1961 [June 14, 1960], No. 20868/60. Heading F1C. [Also in Division B7] In a compressor or ducted fan incorporating an impeller within a duct 11 of the compressor or fan the impeller has means for applying a torque to both ends of each of the blades 10, said means including elements (element 13 rotating with the impeller and lugs 14 on the blades projecting into slots 12 in the element) situated within the wall of the duct for applying the torque at the outer tip of each blade so that the blades may be subjected to variable amounts of elastic deformation whereby the pitch and twist thereof are varied in dependence upon the relative rate of advance of the impeller through the surrounding medium. Thus if the blade root is rotated about its longitudinal axis by a pitch-varying means, the blade tip will move from the mid position shown in Fig. 2, thus varying the pitch of the blade, until the lugs 14 contact a face of the slots whereafter continued rotation of the blade root results in the application of a torque or twist producing an elastic deformation which varies the twist and pitch of the blade. Specification 880,590 is referred to.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB2086860A GB991744A (en) | 1960-06-14 | 1960-06-14 | Improvements in or relating to propellers |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB2086860A GB991744A (en) | 1960-06-14 | 1960-06-14 | Improvements in or relating to propellers |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB991744A true GB991744A (en) | 1965-05-12 |
Family
ID=10153100
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB2086860A Expired GB991744A (en) | 1960-06-14 | 1960-06-14 | Improvements in or relating to propellers |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB991744A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2029515A (en) * | 1978-08-30 | 1980-03-19 | Propeller Design Ltd | Marine ring propeller |
| US4364708A (en) * | 1981-08-27 | 1982-12-21 | David Constant V | Windmill |
| US4767270A (en) * | 1986-04-16 | 1988-08-30 | The Boeing Company | Hoop fan jet engine |
| GB2235254A (en) * | 1989-06-02 | 1991-02-27 | John C Ross | Multi-bladed propulsion apparatus |
| US5096382A (en) * | 1989-05-17 | 1992-03-17 | Gratzer Louis B | Ring-shrouded propeller |
| US5620153A (en) * | 1995-03-20 | 1997-04-15 | Ginsberg; Harold M. | Light aircraft with inflatable parachute wing propelled by a ducted propeller |
-
1960
- 1960-06-14 GB GB2086860A patent/GB991744A/en not_active Expired
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2029515A (en) * | 1978-08-30 | 1980-03-19 | Propeller Design Ltd | Marine ring propeller |
| GB2029515B (en) * | 1978-08-30 | 1982-10-06 | Propeller Design Ltd | Marine propeller |
| US4364708A (en) * | 1981-08-27 | 1982-12-21 | David Constant V | Windmill |
| US4767270A (en) * | 1986-04-16 | 1988-08-30 | The Boeing Company | Hoop fan jet engine |
| US5096382A (en) * | 1989-05-17 | 1992-03-17 | Gratzer Louis B | Ring-shrouded propeller |
| GB2235254A (en) * | 1989-06-02 | 1991-02-27 | John C Ross | Multi-bladed propulsion apparatus |
| GB2235254B (en) * | 1989-06-02 | 1994-03-09 | John C Ross | Multi-bladed propulsion apparatus |
| US5620153A (en) * | 1995-03-20 | 1997-04-15 | Ginsberg; Harold M. | Light aircraft with inflatable parachute wing propelled by a ducted propeller |
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