摘要:
An aeronautical vehicle that rights itself from an inverted state to an upright state has a self-righting frame assembly has an apex preferably at a top of a central vertical axis. The apex provides initial instability to begin a self-righting process when the vehicle is inverted on a surface. A lift and stabilization panel extends across an upper portion of said frame to provide lift, drag and/or stability. A propulsion system can be located within a central void of the frame assembly and oriented to provide a lifting force. An electronics assembly is also carried by the self-righting frame for receiving remote control commands and is communicatively interconnected to the power supply for remotely controlling the aeronautical vehicle to take off, to fly, and to land on a supporting surface. The frame provides self-righting functionality and protection of elements carried therein.
摘要:
A method for forming a thermoplastic composite material with continuous fiber reinforcement by stamping. A flat blank comprising a pre-consolidated stack of plies by automatic fiber placement of fibers referred to as the thermoplastic pre-impregnated fibers is obtained. The flat blank is reheated to a temperature greater than or equal to the melting temperature of the thermoplastic polymer making up the matrix of the thermoplastic pre-impregnated fibers. The reheated flat blank is hot stamped and the part formed between the stamping punch and die is consolidated.
摘要:
A composite structure comprises stacked sets of laminated fiber reinforced resin plies and metal sheets. Edges of the resin plies and metal sheets are interleaved to form a composite-to-metal joint connecting the resin plies with the metal sheets.
摘要:
A composite structure comprises stacked sets of laminated fiber reinforced resin plies and metal sheets. Edges of the resin plies and metal sheets are interleaved to form a composite-to-metal joint connecting the resin plies with the metal sheets.
摘要:
Rear fuselage of an aircraft comprising a tail cone end and a rest of the real fuselage whereby the tail cone end is attached to the rest of the rear fuselage by means of an attachment system comprising a balancer fitting, three lugs and a waiting link. When there is a failure in one of the lugs, the balancer fitting acts supporting loads in the transversal direction of the aircraft. The waiting link only acts if a failure in other link occurs. This waiting link is able to support loads in the longitudinal direction of the aircraft.
摘要:
A T-profile junction of composite materials with a T-profile (1) and a base plate (2). The T-profile (1) comprises a web (3) and at least two flanges (4-7). The flanges (4-7) are angled with respect to the web (3). A fillet (11, 12) is provided between the web (3) and each of the flanges (4-7). At least one tension bar (16, 32, 40, 50, 65) is releasably mounted to the base plate (2). The web (3) is provided with at least one passage (23, 24, 33, 34). Said at least one tension bar (16, 32, 40, 50, 65) reaches through the at least one passage (23, 24, 33, 34). The at least one tension bar (16, 32, 40, 50, 65) is biased against the base plate (2) and the respective flanges (5, 6) of said T-Profile (1).
摘要:
Systems, devices, and methods for a transformable aerial vehicle are provided. In one aspect, a transformable aerial vehicle includes: a central body and at least two transformable frames assemblies respectively disposed on the central body, each of the at least two transformable frame assemblies having a proximal portion pivotally coupled to the central body and a distal portion; an actuation assembly mounted on the central body and configured to pivot the at least two frame assemblies to a plurality of different vertical angles relative to the central body; and a plurality of propulsion units mounted on the at least two transformable frame assemblies and operable to move the transformable aerial vehicle.
摘要:
Processes for fabricating an integrated fiber-reinforced cured resin-composite panel structure include forming a panel preform assembly by (i) positioning pre-cured fiber-reinforced resin-composite tubular stiffeners onto an uncured base skin, and (ii) applying uncured fiber-reinforced resin-composite overlapping layers onto the pre-cured stiffeners so that at least lateral edges of the overlapping layers are laminated to a corresponding region of the base sheet; and thereafter curing the fiber-reinforced resin-composite base skin and overlapping layers to thereby form an integrated composite panel structure.
摘要:
An aircraft fuselage structure having a first fuselage barrel section and a second fuselage section barrel which are joined by tension fasteners extending through frame holes. A shank diameter of the fasteners is smaller than a respective frame hole diameter. A first positive locking element and a second positive locking element is provided forming a form-fit area with the first positive locking element in the circumferential direction. A method for producing such an aircraft fuselage section is also provided.
摘要:
The disclosed embodiments concern a curved structural part composed of a composite material with reinforced, continuous fibers whose cross section includes at least two wings, with said fibers extending from one wing to the other, with said structural part having a variation in the width of its section parallel to the local radius of curvature. The structural element that results from assembling the parts in the disclosed embodiments therefore has local widening of the section at the connections between the parts constituting a structural element, such as an aircraft fuselage frame, and widening at the connection with the floor profiles, if such a profile is used to make an aircraft fuselage structure. The disclosed embodiments also concern a process for manufacturing such a part, as well as a device for advantageously implementing such a process.