Patent
Airfoil with extendible and retractable leading edge
K Burdges,A Robertson +1 more
TLDR
A leading edge device (referred to as a foreflap) is formed by passing a curved parting line through an airfoil in such a manner as to allow the front part of the airframe to rotate about a pivot which is close to the wing external contour as mentioned in this paper.Abstract:
A leading edge device (referred to as a foreflap) is formed by passing a curved parting line through an airfoil in such a manner as to allow the front part of the airfoil to rotate about a pivot which is close to the wing external contour. When the foreflap is thus extended, the resulting airfoil contour has a large bulbous nose which is formed mainly by the parting line. The exact contour of the resulting nose may be shaped to optimum aerodynamic contour for high lift operation without adversely affecting high speed performance, since the parting surface is inside of the clean airfoil when the foreflap is retracted. The foreflap may be operated by any conventional means, e.g., a simple hinge located at the pivot outside of the airfoil contour.read more
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Systems and methods for controlling aircraft flaps and spoilers
TL;DR: In this paper, a system for controlling aircraft flaps and spoilers is described, in which a first flap position and a second flap position can be controlled by operation of a first actuator, independent of the motion of the flap.
Patent
Wing leading edge high lift device
TL;DR: In this paper, a wing leading edge high-lift generating device in the form of a spanwise slat segment having both an upper and lower surface, faired into an airfoil configured leading edge of a relatively stationary portion of the wing there behind and movable with respect thereto by a downwardly extending hinge arm pivotally related to a downward-ending hinge bracket from the wing within a fairing structure which also includes an actuator between the hinge arm and bracket for biasing the hinge arms connected to the leading edge device away from and downwardly with respect to the
Patent
Multi-function trailing edge devices and associated methods
Seiya Sakurai,Stephen J. Fox,Kevin W. Beyer,Douglas S. Lacy,Paul L. Johnson,Stephen L. Wells,Jack S. Noble,Paul T. Meredith,Neal V. Huynh,Russell R. Christianson,Paul M. Vijgen,Michael F. Fitzpatrick,Clayton A. Prow,Edward W. Gronenthal +13 more
TL;DR: In this article, a guide structure can be coupled between the first and second portions of an external fluid flow body, and an actuator can be operatively coupled between them to move the second portion relative to the first portion.
Patent
Systems, apparatuses, and methods for moving aircraft control surfaces
TL;DR: In this paper, an aircraft system includes an actuator operably coupled to a control surface in one-to-one correspondence, which can include at least a first fluid port and a second fluid port.
Patent
Aircraft control surface drive system and associated methods
TL;DR: A control surface drive system having a plurality of actuator assemblies coupled to first and second supply lines and to a return line is described in this paper, where a computer controller operatively interconnects the plurality of assemblies and the flow control assembly.
References
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Patent
Controlled circulation stowable rotor for v/stol aircraft
TL;DR: In this article, a helicopter-type rotor is provided with means to blow air angularly outward toward the leading and trailing edges, above and below each rotor blade, to spoil the lifting effect of the blades during stopping of rotation of the rotor and so eliminate the blade-bending loads.
Patent
Tailless aircraft with stabilizing wing
TL;DR: In this paper, the principal object of the invention is to provide an aircraft such as a flying wing or a tailless type, which is so constructed that the tendency of the wing tip sections to stall before the root sections is materially...