Aeronautics and astronautics – Aircraft sustentation – Sustaining airfoils
Patent
1978-09-08
1980-05-13
Frankfort, Charles E.
Aeronautics and astronautics
Aircraft sustentation
Sustaining airfoils
244210, B64C 350
Patent
active
042025192
ABSTRACT:
A leading edge slat apparatus especially adapted to be deployed from the undersurface of an airfoil without encountering excessive resistance from the airstream. The apparatus comprises a slat member which is stowed in an airfoil with the forward end positioned forward of the rear end and which is moved downwardly and forwardly to its deployed position. Concurrently therewith, the rear end is moved upwardly relative to the forward end, with the forward end still being positioned forwardly of the rear end. In a first embodiment, a main actuating member has a forward end pivotally connected to the slat member and a rear end slideably connected to the airfoil. A tilting arm is pivotally connected to the airfoil at one end and pivotally connected to the actuating member and a tilting link at a second end. When the slat member is moved from the stowed position to the deployed position, the tilting link co-acts with the tilting arm and the main actuating member to rotate the rear end of the slat member upwardly relative to the forward end of the slat member. In a second embodiment there is a slat member, a positioning arm, first and second pivot arms and an actuating device. The actuating device rotates the positioning arm in order to pivot the first and second pivot arms which in turn move the slat member downwardly and forwardly and elevate the rear end of the slat member relative to the forward end.
REFERENCES:
patent: 2990140 (1961-06-01), Mazelsky
patent: 3504870 (1970-04-01), Cole et al.
patent: 3556439 (1971-01-01), Autry et al.
patent: 3743219 (1973-07-01), Gorges
patent: 3910530 (1975-10-01), James
Frankfort Charles E.
The Boeing Company
LandOfFree
Airfoil leading edge slat apparatus does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Airfoil leading edge slat apparatus, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Airfoil leading edge slat apparatus will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-926799