Abstract: A hook system has a mount that includes a first sidewall comprising a concave profile on a longitudinal end of the first sidewall, a second sidewall laterally offset in a fixed location relative to the first sidewall and defining a channel therebetween, the second sidewall having a second concave profile on a longitudinal end of the second sidewall. The hook system also has a first pin structure extending between the first sidewall and the second sidewall and a connector. The connector has a third concave profile, the third concave profile being configured to receive the first pin structure therein. The hook system also includes a second pin structure extending through the connector, wherein each of the first concave profile and the second concave profile are configured to receive the second pin structure therein. The connector is configured to be at least partially received within the channel.

Abstract: Systems and methods include providing an aircraft with a vertical stabilizer system having a vertical stabilizer operatively coupled to a tail boom, tail rotor gearbox, or other component of the aircraft at a forward attachment and an aft attachment. The vertical stabilizer is selectively rotatable to adjust an angle of attack of the vertical stabilizer with respect to a forward flight direction of the aircraft. The vertical stabilizer is rotatable between a forward flight position having a substantially small degree angle of attack and a hover or lateral movement position having a substantially ninety degree angle of attack.

Abstract: A method of operating an automated fiber placement machine including determining an effective length and a steering radius of a localized curved portion of a path and obtaining data including combinations of effective length and steering radius reference values each associated with a corresponding one of maximum speed values. A predetermined defect is avoided when the tape is laid along a curved path characterized by any of the combinations of effective length and steering radius reference values and laid at the corresponding maximum speed value. The method further includes determining a maximum speed based on the maximum speed values of the data in function of a correspondence between the effective length and the steering radius of the curved path and the combinations of effective length and steering radius reference values, selecting a speed for laying the tape being at most the maximum speed, and laying the tape on the surface.

Abstract: A landing gear system for an aircraft includes an aft landing gear fitting coupled to the aircraft and a cross tube rotatably coupled to the aft landing gear fitting. The landing gear system also includes first and second wheel fittings coupled to the first and second ends of the cross tube, respectively, and first and second wheels rotatably coupled to the first and second wheel fittings, respectively.

Abstract: A modal restraint system for an occupant of a seat of an aircraft includes a strap feeder unit and a strap selectively retractable into and extendable from the strap feeder unit. The strap is positionable adjacent to the occupant so as to dispose the occupant between the strap and the seat. The strap feeder unit is adapted to switch between a plurality of modes including an unfixed mode and a fixed mode. The strap is extendable from and retractable into the strap feeder unit in the unfixed mode. The strap is substantially unextendable from the strap feeder unit in the fixed mode. The strap feeder unit is in the unfixed mode by default. The strap feeder unit is operable to switch to the fixed mode in response to a precautionary event, thereby reducing freedom of movement of the occupant relative to the seat of the aircraft.

Abstract: A modal restraint system for an occupant of a seat of an aircraft includes a strap feeder unit and a strap selectively retractable into and extendable from the strap feeder unit. The strap is positionable adjacent to the occupant so as to dispose the occupant between the strap and the seat. The strap feeder unit is adapted to switch between a plurality of modes including a fixed mode and an unfixed mode. The strap is substantially unextendable from the strap feeder unit in the fixed mode. The strap is extendable from and retractable into the strap feeder unit in the unfixed mode. The strap feeder unit is in the fixed mode by default. The strap feeder unit is operable to switch to the unfixed mode in response to a user input, thereby increasing freedom of movement of the occupant relative to the seat of the aircraft.

Abstract: A process for sequestrating carbon emitted into the atmosphere in the form of CO2 comprises: a) a step for concentrating CO2 in the liquid phase; b) a step for electro-reduction in an aprotic medium to a compound in which the carbon changes to oxidation number +3 in the form of oxalic acid or formic acid; c) if appropriate, a step for re-extracting oxalic or formic acid in the aqueous phase; and d) a step for mineralization by reaction with a compound of an element M, resulting in a stable compound in which the atomic ratio C/M is about 2/1.

Abstract: The invention relates to the use of polyamide 11 as an internal coating for a gas transport pipeline to reduce pressure loss.

Abstract: A process for sequestrating carbon emitted into the atmosphere in the form of CO2 comprises: a) a step for concentrating CO2 in the liquid phase; b) a step for electro-reduction in an aprotic medium to a compound in which the carbon changes to oxidation number +3 in the form of oxalic acid or formic acid; c) if appropriate, a step for re-extracting oxalic or formic acid in the aqueous phase; and d) a step for mineralization by reaction with a compound of an element M, resulting in a stable compound in which the atomic ratio C/M is about 2/1.

Abstract: The invention concerns a structure comprising at least one metallic surface which undergoes cathodic protection and a protective coating for said surface, said coating comprising a polymer including micro-capsules containing compounds sensitive to the electric field generated by the cathodic protection and capable of reacting in an alkaline medium to form a protective layer on the surface of the structure when it is in direct contact with a corrosive medium. The invention also concerns the coating associated with said structure.

Abstract: The invention relates to a method for making structured surfaces within pipes (1) lined with a coating and wherein fluids such as gas, hydrocarbons or water circulate. The invention consists in irreversibly deforming, during baking and/or drying, the coating internally applied by impression, via expandable means (16), for example a rubber bladder whose outer surface bears the structurations.

Abstract: The invention concerns a structure comprising at least one metallic surface which undergoes cathodic protection and a protective coating for said surface, said coating comprising a polymer including micro-capsules containing compounds sensitive to the electric field generated by the cathodic protection and capable of reacting in an alkaline medium to form a protective layer on the surface of the structure when it is in direct contact with a corrosive medium. The invention also concerns the coating associated with said structure.

Abstract: Non-destructive method allowing in-situ evaluation, in a sensitive and reproducible way, for a given thermosetting composition, of the time left before gelation of said composition as a function of a quantity measuring its dielectric behavior.

Abstract: Non-destructive method allowing in-situ evaluation, in a sensitive and reproducible way, for a given thermosetting composition, of the time left before gelation of said composition as a function of a quantity measuring its dielectric behaviour.

Abstract: The proposed method allows to determine by dielectrometry the variation of the glass-transition temperature (Tg) of a polymer material used in the presence of fluids (water/organic compound/gas), pure or in admixture. More precisely, the invention is based on the use of dielectric sensors whose geometry is such that they allow to follow, in a sensitive and reproducible way, the frequency and/or temperature dependence of the dielectric permittivity characteristics of a polymer material in the presence of fluids without disturbing permeation/desorption of the solute during transient and unsteady states, these dielectric measurements (real and/or imaginary part) being connected with the plasticized state of the material, which determines the performances thereof during use.

Abstract: The proposed method allows to determine by dielectrometry the variation of the glass-transition temperature (Tg) of a polymer material used in the presence of fluids (water/organic compound/gas), pure or in admixture. More precisely, the invention is based on the use of dielectric sensors whose geometry is such that they allow to follow, in a sensitive and reproducible way, the frequency and/or temperature dependence of the dielectric permittivity characteristics of a polymer material in the presence of fluids without disturbing permeation/desorption of the solute during transient and unsteady states, these dielectric measurements (real and/or imaginary part) being connected with the plasticized state of the material, which determines the performances thereof during use.