Secondary load path detection
US-2018045291-A1 · Feb 15, 2018 · US
Lower attachment system for a trimmable horizontal stabiliser actuator
US2018334239A1 · US · A1
| Field | Value |
|---|---|
| Publication number | US-2018334239-A1 |
| Application number | US-201815964109-A |
| Country | US |
| Kind code | A1 |
| Filing date | Apr 27, 2018 |
| Priority date | May 19, 2017 |
| Publication date | Nov 22, 2018 |
| Grant date | — |
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Abstract
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A lower attachment system for a trimmable horizontal stabiliser actuator comprising: a ballnut for being disposed on a screwshaft of the actuator and forming a part of a primary load path of the lower attachment system; a trunnion connected to the ballnut and forming a part of the primary load path of the lower attachment system; a failsafe plate disposed about the trunnion and forming a part of a secondary load path; a secondary connection connected to the failsafe plate and forming a part of the secondary load path; a sheet plate attached to a first mounting point on the secondary connection and a second mounting point on the ballnut; and an adjustment mechanism provided with the sheet plate for adjusting the size or position of the sheet plate to adapt it to fit a distance between the first and second mounting points.
First claim
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1 . A lower attachment system for a trimmable horizontal stabiliser actuator comprising: a ballnut for being disposed on a screwshaft of the actuator and forming a part of a primary load path of the lower attachment system; a trunnion connected to the ballnut and forming a part of the primary load path of the lower attachment system; a failsafe plate disposed about the trunnion and forming a part of a secondary load path; a secondary connection connected to the failsafe plate and forming a part of the secondary load path; a sheet plate attached to a first mounting point on the secondary connection and a second mounting point on the ballnut; and an adjustment mechanism provided with the sheet plate for adjusting the size or position of the sheet plate to adapt it to fit a distance between the first and second mounting points. 2 . A lower attachment system as claimed in claim 1 , wherein the adjustment mechanism comprises: a coupling portion for coupling to a sheet portion of the sheet plate; and a screw mounted to the ballnut at the second mounting point and arranged to adjust the position of the coupling portion to adjust the size or position of the sheet plate. 3 . A lower attachment system as claimed in claim 1 , wherein the adjustment mechanism comprises: a coupling portion for coupling to a sheet portion of the sheet plate; and a screw mounted to the secondary connection at the first mounting point and arranged to adjust the position of the coupling portion to adjust the size or position of the sheet plate. 4 . A lower attachment system as claimed in claim 1 , wherein the adjustment mechanism comprises a locking mechanism for preventing changes to the size or position of the sheet plate after adjustment of the sheet plate to fit between the first and second mounting points. 5 . A lower attachment system as claimed in claim 1 , wherein the sheet plate is arranged to break in case of a failure of the primary load path. 6 . A lower attachment system as claimed in claim 1 , comprising a fuse pin coupling the sheet plate and arranged to break in case of a failure of the primary load path. 7 . A lower attachment system as claimed in claim 1 , comprising a secondary trunnion forming a part of the secondary load path and arranged to bear against the secondary connection in case of a failure of the primary load path. 8 . A trimmable horizontal stabiliser actuator comprising a lower attachment system as claimed in claim 1 . 9 . A method of installing a sheet plate of a lower attachment system for a trimmable horizontal stabiliser actuator as claimed in claim 1 , the method comprising: coupling the sheet plate to the ballnut at the second mounting point and/or to the secondary connection at the first mounting point; and adjusting the adjustment mechanism to adjust the size or position of the sheet plate to adapt it to fit the distance between the first and second mounting points. 10 . A method as claimed in claim 9 , further comprising locking the adjustment mechanism to prevent further adjustment of the sheet plate.
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- What does patent US2018334239A1 cover?
- A lower attachment system for a trimmable horizontal stabiliser actuator comprising: a ballnut for being disposed on a screwshaft of the actuator and forming a part of a primary load path of the lower attachment system; a trunnion connected to the ballnut and forming a part of the primary load path of the lower attachment system; a failsafe plate disposed about the trunnion and forming a part o…
- Who is the assignee on this patent?
- Goodrich Actuation Systems Sas
- What technology area does this patent fall under?
- Primary CPC classification B64C13/28. Mapped technology areas include Operations & Transport.
- When was this patent published?
- Publication date Thu Nov 22 2018 00:00:00 GMT+0000 (Coordinated Universal Time) (A1). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 3 related publications on this page (citations in our corpus or others sharing the same primary CPC).