GB599368A - Improvements in or relating to propeller blade vibration suppressors - Google Patents
Improvements in or relating to propeller blade vibration suppressorsInfo
- Publication number
- GB599368A GB599368A GB3688/43A GB368843A GB599368A GB 599368 A GB599368 A GB 599368A GB 3688/43 A GB3688/43 A GB 3688/43A GB 368843 A GB368843 A GB 368843A GB 599368 A GB599368 A GB 599368A
- Authority
- GB
- United Kingdom
- Prior art keywords
- blade
- vibration
- cavity
- damper
- cage
- 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
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F15/00—Suppression of vibrations in systems; Means or arrangements for avoiding or reducing out-of-balance forces, e.g. due to motion
- F16F15/10—Suppression of vibrations in rotating systems by making use of members moving with the system
-
- 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
- B64C11/008—Propellers, e.g. of ducted type; Features common to propellers and rotors for rotorcraft characterised by vibration absorbing or balancing means
Landscapes
- Engineering & Computer Science (AREA)
- Aviation & Aerospace Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Mechanical Engineering (AREA)
- Fluid-Damping Devices (AREA)
Abstract
599,368. Vibration-dampers. UNITED AIRCRAFT CORPORATION. March 6, 1943, No. 3688. Convention date, Nov. 16, 1939. [Class 108 (iii)] [Also in Group XXXIII] A vibration-damper is arranged in a cavity in a propeller blade and includes a member 50 loose in the cavity. The member 50 retained against the action of centrifugal force by rollers 62 disposed between arcuate tracks 54, 58 in the member 50 and a seat 56 supported by the blade; the dimensions of the parts being chosen to give the members a preselected rate of vibration at a selected speed. Lateral blade vibrations cause the loose member to move laterally over the rollers and hence axially against the action of centrifugal force. Member 50 comprises portions 48 and 52 of rectangular and hexagonal sections respectively, the former being supported in a cage 42 comprising cylindrical end portions connected by strips and secured against rotation by pins 46. Perforations may be provided in member 50 and the blade cavity may be filled with liquid to damp movement of the member. Balance weights 72 may be secured to the cage 42 by a bolt 70 which may be screwed inward to abut member 50 and prevent movement thereof. The damper may be applied to a variable-pitch propeller as described in Specification 416,255, [Group XXXIII]
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US599368XA | 1939-11-16 | 1939-11-16 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB599368A true GB599368A (en) | 1948-03-11 |
Family
ID=22026259
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB3688/43A Expired GB599368A (en) | 1939-11-16 | 1943-03-06 | Improvements in or relating to propeller blade vibration suppressors |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB599368A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2557032A3 (en) * | 2011-08-12 | 2013-10-23 | Hamilton Sundstrand Corporation | Aircraft propellers |
-
1943
- 1943-03-06 GB GB3688/43A patent/GB599368A/en not_active Expired
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2557032A3 (en) * | 2011-08-12 | 2013-10-23 | Hamilton Sundstrand Corporation | Aircraft propellers |
US8882464B2 (en) | 2011-08-12 | 2014-11-11 | Hamilton Sundstrand Corporation | Aircraft propellers |
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