US3853289A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Trailing edge flap and actuating mechanism therefor
Assignee: Boeing Co
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Filing: 1973-02-15
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Granted: 1974-12-10
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Expires: 1993-02-15
Abstract
Abstract A trailing edge flap, including a main segment and an aft segment is mounted on linkage for movement from a retracted position nested in the rear portion of a wing to an extended position. First linkage connects the main segment to the wing to move it forwardly and rearwardly while second linkage, interconnected by a programming link with the first linkage, properly positions the main segment between and in the extended and retracted positions. At least the major portion of the main segment is positioned rearwardly of the linkage connection to the wing. The aft segment is mounted on a track on the main segment and is moved to extended and retracted positions through a third linkage interconnected with the second linkage.
Inventors
- 👤 C Nevermann
- 👤 E Roscow
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 17:26
CPC Classifications
B; B64; B64C; B64C9/00; B64C9/14; B64C9/16; B64C9/20
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
367 words
An extending and retracting mechanism for a trailing edge flap system attached to a wing, said wing having a rear main spar and fixed structure affixed thereto, said flap system including at least a main flap segment having a rearward portion, the mechanism comprising: first link means pivotally connected at a first location thereon to said fixed structure adjacent the rear main spar of said wing and pivotally connected at a second location thereon to said main flap segment, second link means pivotally connected at a first location thereon to said fixed structure below said first link means adjacent the rear main spar of said wing, the major portion of said main flap segment being located rearwardly of the pivotal connections of said first and second link means to said fixed structure, third link means pivotally connected at a first location thereon to said main flap segment and pivotally connected at a second location thereon to a second location on said second link means, the pivotal connections of said first and third link means to said main flap segment being spaced from each other, programming link means pivotally connected at a first location thereon to a third location on said first link means and pivotally connected at a second location thereon to a third location on said second link means, said third location on said first link means being positioned between said first and second locations on said first link means, said third location on said second link means being positioned between said first and second locations on said second link means, said first, second and third link means and said programming link means being arranged so that the second location of said first link means prescribes a retraction path relative to said wing which includes a downwardly and forwardly curved portion preceding an upwardly and forwardly curved portion, said main flap segment being oriented downwardly and rearwardly relative to said wing in an extended position, the rearward portion of said main flap segment being rotated upwardly about said second location on sAid first link means as said second location on said first link means follows said retraction path, and power means for actuating said link means.
Claim 2
Dependent Claim
367 words
An extending and retracting mechanism for a trailing edge flap system attached to a wing, said wing having a rear main spar and fixed structure affixed thereto, said flap system including at least a main flap segment having a rearward portion, the mechanism comprising: first link means pivotally connected at a first location thereon to said fixed structure adjacent the rear main spar of said wing and pivotally connected at a second location thereon to said main flap segment, second link means pivotally connected at a first location thereon to said fixed structure below said first link means adjacent the rear main spar of said wing, the major portion of said main flap segment being located rearwardly of the pivotal connections of said first and second link means to said fixed structure, third link means pivotally connected at a first location thereon to said main flap segment and pivotally connected at a second location thereon to a second location on said second link means, the pivotal connections of said first and third link means to said main flap segment being spaced from each other, programming link means pivotally connected at a first location thereon to a third location on said first link means and pivotally connected at a second location thereon to a third location on said second link means, said third location on said first link means being positioned between said first and second locations on said first link means, said third location on said second link means being positioned between said first and second locations on said second link means, said first, second and third link means and said programming link means being arranged so that the second location of said first link means prescribes a retraction path relative to said wing which includes a downwardly and forwardly curved portion preceding an upwardly and forwardly curved portion, said main flap segment being oriented downwardly and rearwardly relative to said wing in an extended position, the rearward portion of said main flap segment being rotated upwardly about said second location on sAid first link means as said second location on said first link means follows said retraction path, and power means for actuating said link means.
Claim 3
Dependent Claim
72 words
The mechanism of claim 1 wherein said power means comprises a torque rod mounted for rotation on said rear main spar of said wing, an arm connected to said rod and first connecting link means connecting said arm to one of said link means for imparting motion thereto as said rod rotates, said torque rod being located between the pivotal connections of said first and second link means to said fixed structure.
Claim 4
Dependent Claim
39 words
The mechanism of claim 2 wherein said first connecting link means is pivotally connected at a first location to said arm and pivotally connected at a third location between said first and second locations on said first link means.
Claim 5
Dependent Claim
75 words
The mechanism of claim 1 further comprising: an aft flap segment and means mounting said aft flap segment on said main flap segment for translation relative thereto, and second connecting link means pivotally connected at a first location thereon to said third link means and connected at a second location thereon to said aft flap segment, said second connecting link means for translating said aft flap segment means responsive to movement of said main segment.
Claim 6
Dependent Claim
119 words
The mechanism of claim 4 wherein said means mounting said aft flap segment comprises: track means mounted on said main segment, and guide means connected to said aft flap segment and engaging said track means for sliding movement therein, and wherein said second connecting link means comprises: a bell crank pivotally mounted on said main segment, a first connecting link pivotally connected at one end thereof to said third link means and pivotally connected at the other end thereof to one end of said bell crank means, and a second connecting link pivotally connected at one end thereof to said aft flap segment and pivotally connected at the other end thereof to the other end of said bell crank.
Claim 7
Dependent Claim
242 words
Apparatus for retracting and extending a main trailing edge flap segment to and from a nested position adjacent fixed structure on the rear of a wing comprising: first linkage means pivotally connected at one end to said fixed structure on said wing and pivotally connected at the other end to said main flap segment for moving said main flap segment forwardly and rearwardly, second linkage means pivotally connected at one end to said fixed structure on said wing at a location below and forwardly of the pivotal connection of said first linkage means to said fixed structure, and pivotally connected at the other end to said main flap segment, said second linkage means being hinged at a position between its two ends, the pivotal connections of said first and second linkage means to said main flap segment being spaced from each other, the pivotal connection of said first linkage means to fixed structure being above the pivotal connection of the second linkage means to fixed structure, programming link means pivotally connected to said first linkage means at a location between the ends of said first linkage means and pivotally connected to said second linkage means at a location between the ends of said second linkage means, said second linkage means and said programming link means cooperating to orient said main segment at predetermined locations in a retracted position and in an extended position, and means for actuating one of said linkage means.
Claim 8
Dependent Claim
242 words
Apparatus for retracting and extending a main trailing edge flap segment to and from a nested position adjacent fixed structure on the rear of a wing comprising: first linkage means pivotally connected at one end to said fixed structure on said wing and pivotally connected at the other end to said main flap segment for moving said main flap segment forwardly and rearwardly, second linkage means pivotally connected at one end to said fixed structure on said wing at a location below and forwardly of the pivotal connection of said first linkage means to said fixed structure, and pivotally connected at the other end to said main flap segment, said second linkage means being hinged at a position between its two ends, the pivotal connections of said first and second linkage means to said main flap segment being spaced from each other, the pivotal connection of said first linkage means to fixed structure being above the pivotal connection of the second linkage means to fixed structure, programming link means pivotally connected to said first linkage means at a location between the ends of said first linkage means and pivotally connected to said second linkage means at a location between the ends of said second linkage means, said second linkage means and said programming link means cooperating to orient said main segment at predetermined locations in a retracted position and in an extended position, and means for actuating one of said linkage means.
Claim 9
Dependent Claim
63 words
The apparatus of claim 6 further comprising: an aft flap segment having guide means thereon, said main segment having track means thereon with which said guide means translatably engages, and third linkage means pivotally connected to said aft flap segment and said second linkage means for causing said guide means to translate along said track means responsive to movement of said main segment.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-12-09 | 1978-06-10 | 1978-12-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-12-09 | 1982-06-10 | 1982-12-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-12-09 | 1986-06-10 | 1986-12-10 | $7700.00 | Window Closed / Lapsed |