GB562017A - Improvements in or relating to retractable undercarriages for aircraft - Google Patents
Improvements in or relating to retractable undercarriages for aircraftInfo
- Publication number
- GB562017A GB562017A GB1749942A GB1749942A GB562017A GB 562017 A GB562017 A GB 562017A GB 1749942 A GB1749942 A GB 1749942A GB 1749942 A GB1749942 A GB 1749942A GB 562017 A GB562017 A GB 562017A
- Authority
- GB
- United Kingdom
- Prior art keywords
- leg
- aircraft
- mechanical advantage
- raised
- shaft
- 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
- B64C25/00—Alighting gear
- B64C25/02—Undercarriages
- B64C25/08—Undercarriages non-fixed, e.g. jettisonable
- B64C25/10—Undercarriages non-fixed, e.g. jettisonable retractable, foldable, or the like
- B64C25/18—Operating mechanisms
- B64C25/20—Operating mechanisms mechanical
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Aviation & Aerospace Engineering (AREA)
- Gear Transmission (AREA)
Abstract
562,017. Aircraft retractable undercarriages. MESSIER AIRCRAFT EQUIPMENT, Ltd. (formerly Rubery Owen Messier, Ltd.), and CONWAY, H. G. Dec. 9, 1942, No. 17499. [Class 4] An aircraft undercariage is retracted by an electric or other rotary motor through a pair of gears having a varying velocity ratio so as to give an increased mechanical advantage to the motor where maximum effort is required. In one form, a worm 17 on a motor-driven shaft 18 engages a toothed gear 16 of spiral contour so that the maximum mechanical advantage occurs as the undercarriage 11 is raised laterally to its completely retracted position: The bearing 19 for the shaft 18 is laterally displaceable to accommodate the varying radius of the gear 16 either under spring pressure or under control of a cam moving with the leg 11. Fig. 2 shows another form in which two meshing eccentric gears 30, 31 are. mounted respectively on parallel, shafts 29, 25, the latter carrying the undercarriage leg 21. The shaft 29 is driven by worm gear 27, 28. In another form, two non-circular gears are arranged to give maximum mechanical advantage when the leg is partially raised, as is required when the leg is raised . against wind pressure in a fore-and-aft plane..
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1749942A GB562017A (en) | 1942-12-09 | 1942-12-09 | Improvements in or relating to retractable undercarriages for aircraft |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1749942A GB562017A (en) | 1942-12-09 | 1942-12-09 | Improvements in or relating to retractable undercarriages for aircraft |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB562017A true GB562017A (en) | 1944-06-14 |
Family
ID=10096245
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1749942A Expired GB562017A (en) | 1942-12-09 | 1942-12-09 | Improvements in or relating to retractable undercarriages for aircraft |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB562017A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107161327A (en) * | 2016-06-22 | 2017-09-15 | 北京臻迪机器人有限公司 | A kind of foot rest structure of utilization gear train folding |
| CN110733632A (en) * | 2019-11-15 | 2020-01-31 | 中航飞机起落架有限责任公司 | landing gear retraction structure |
| CN111762311A (en) * | 2020-08-06 | 2020-10-13 | 四川跃纳科技有限公司 | Unmanned aerial vehicle undercarriage jack |
| CN114392504A (en) * | 2021-12-24 | 2022-04-26 | 泰州市三江消防器材有限公司 | Remote control obstacle crossing unmanned aerial vehicle for fire fighting |
-
1942
- 1942-12-09 GB GB1749942A patent/GB562017A/en not_active Expired
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107161327A (en) * | 2016-06-22 | 2017-09-15 | 北京臻迪机器人有限公司 | A kind of foot rest structure of utilization gear train folding |
| CN110733632A (en) * | 2019-11-15 | 2020-01-31 | 中航飞机起落架有限责任公司 | landing gear retraction structure |
| CN110733632B (en) * | 2019-11-15 | 2021-04-13 | 中航飞机起落架有限责任公司 | Undercarriage receive and releases structure |
| CN111762311A (en) * | 2020-08-06 | 2020-10-13 | 四川跃纳科技有限公司 | Unmanned aerial vehicle undercarriage jack |
| CN114392504A (en) * | 2021-12-24 | 2022-04-26 | 泰州市三江消防器材有限公司 | Remote control obstacle crossing unmanned aerial vehicle for fire fighting |
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