GB557011A - Improvements in or relating to helicopters - Google Patents
Improvements in or relating to helicoptersInfo
- Publication number
- GB557011A GB557011A GB542442A GB542442A GB557011A GB 557011 A GB557011 A GB 557011A GB 542442 A GB542442 A GB 542442A GB 542442 A GB542442 A GB 542442A GB 557011 A GB557011 A GB 557011A
- Authority
- GB
- United Kingdom
- Prior art keywords
- blade
- space
- gases
- nozzle
- ring
- 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
- 239000007789 gas Substances 0.000 abstract 7
- 239000011810 insulating material Substances 0.000 abstract 3
- 238000012856 packing Methods 0.000 abstract 3
- 239000000463 material Substances 0.000 abstract 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 abstract 1
- 229910052799 carbon Inorganic materials 0.000 abstract 1
- 238000010276 construction Methods 0.000 abstract 1
- 210000003298 dental enamel Anatomy 0.000 abstract 1
- 238000012986 modification Methods 0.000 abstract 1
- 230000004048 modification Effects 0.000 abstract 1
- 238000007789 sealing Methods 0.000 abstract 1
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
- B64C27/16—Drive of rotors by means, e.g. propellers, mounted on rotor blades
- B64C27/18—Drive of rotors by means, e.g. propellers, mounted on rotor blades the means being jet-reaction apparatus
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Aviation & Aerospace Engineering (AREA)
- Jet Pumps And Other Pumps (AREA)
Abstract
557,011. Helicopters. WEIR, Ltd., G. & J., and PULLIN, C. G. April 22, 1942, No. 5424 [Class 4] [Also in Group XXVI] The invention is concerned with the construction of jet driven blades and the provision of gas sealing means between relatively rotatable parts of the gas ducts through a helicopter rotor hub. Packing rings 52, 53 of moulded compressed carbon are secured within the upper and lower parts 48, 49 of a member tiltable upon a fixed hollow spherical support 47 which the packings closely fit. A hub 65 rotatable upon the tiltable member is sealed against gas leakage at its lower side by piston rings 71 carried by a ring 72 on the member 49. Similar rings 88 prevent escape of gases between each blade root 82 and a member 75 upon which the blade can tilt to vary the pitch of the ring system. The members 75 have belled ends bearing against spherical seatings 76 screwed into projections 74 on the hub and carbon-base packing material 77a is moulded into grooves in the seating against which the belled ends of the members 75 are pressed by springs 79 acting upon a ring 80 carrying a ring of frictional material 78. The blades are formed with a stressed skin stiffened by longitudinal spars 124, Fig. 6, the forward space 145 being D-shaped. At the root the forward portion is swaged to form a circular flared portion 116, 82 in which is secured an inner tube 114 for conveying the gases to the forward space 145 and to the nozzle at the blade tip. The space 145 is lined with insulating material and the skin is coated with an asbestos-base enamel. The spars 124 terminate in a bulkhead 144 braced to the tube 116 by a stay 140, a fairing 143 closing the inner end of the blade. In a modification the central space between the two spars is lined with insulating material having a forward air inlet 137. insulating material and the gases pass through it to an ejector nozzle 138, Fig. 13, having a forward air inlet 137. The forward space encloses a weight 135 for balancing the blade. In another form the gases issue from a venturi shaped nozzle without air inlet and a balance weight is mounted at the forward end of the nozzle.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB542442A GB557011A (en) | 1942-04-22 | 1942-04-22 | Improvements in or relating to helicopters |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB542442A GB557011A (en) | 1942-04-22 | 1942-04-22 | Improvements in or relating to helicopters |
Publications (1)
Publication Number | Publication Date |
---|---|
GB557011A true GB557011A (en) | 1943-11-01 |
Family
ID=9795923
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB542442A Expired GB557011A (en) | 1942-04-22 | 1942-04-22 | Improvements in or relating to helicopters |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB557011A (en) |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2590457A (en) * | 1946-04-20 | 1952-03-25 | Sigma | Jet propulsion device for airscrews or rotary wings |
US2596378A (en) * | 1945-07-03 | 1952-05-13 | David T Dobbins | Helicopter blade pitch control mechanism |
US2605608A (en) * | 1946-06-27 | 1952-08-05 | Jr Frank D Barclay | Jet reaction motor |
US2638990A (en) * | 1947-04-01 | 1953-05-19 | Autogiro Co Of America | Aircraft sustaining rotor blade with airflow control |
US2673696A (en) * | 1946-05-24 | 1954-03-30 | Autogiro Co Of America | Helicopter having a jet-driven rotor system |
WO1996025328A1 (en) * | 1995-02-16 | 1996-08-22 | Michel Milot | Combined cycle compressed air tip jet driven helicopter |
-
1942
- 1942-04-22 GB GB542442A patent/GB557011A/en not_active Expired
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2596378A (en) * | 1945-07-03 | 1952-05-13 | David T Dobbins | Helicopter blade pitch control mechanism |
US2590457A (en) * | 1946-04-20 | 1952-03-25 | Sigma | Jet propulsion device for airscrews or rotary wings |
US2673696A (en) * | 1946-05-24 | 1954-03-30 | Autogiro Co Of America | Helicopter having a jet-driven rotor system |
US2605608A (en) * | 1946-06-27 | 1952-08-05 | Jr Frank D Barclay | Jet reaction motor |
US2638990A (en) * | 1947-04-01 | 1953-05-19 | Autogiro Co Of America | Aircraft sustaining rotor blade with airflow control |
WO1996025328A1 (en) * | 1995-02-16 | 1996-08-22 | Michel Milot | Combined cycle compressed air tip jet driven helicopter |
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