66results about How to "Small frontal area" patented technology

Provided is an accessory gearbox for a gas turbine engine that contributes minimally to engine weight and complexity. An accessory gearbox comprises a stationary frame that is circumferentially disposed about a central longitudinal axis of the engine. The frame includes a forward-directed axial face and a rearward-directed axial face for fastening the frame to the engine. A central bore accepts a rotational driving means and an outermost rim circumscribes the outer diameter of the frame. A compartment is located between the bore and the rim. At least one primary accessory is mounted to a face and proximate the compartment, remotely engaging the driving means and able to be driven concurrently therewith.

A bicycle wheel release mechanism can be configured to fit between dropouts on a bicycle. The release mechanism can have a ramp member and a ramp interface that rotate relative to one another to define a secured position where the wheel is secured to a bicycle and an open position where the wheel is releasable from the bicycle. The ramp member can be keyed to the bicycle such that the release mechanism can be operated or adjusted via single-handed operation. The ramp member can be configured with a variable angle ramp to facilitate rapid application for initial rotation of the mechanism followed by slower application as clamping forces increase when the release mechanism approaches the secured position.

A bicycle wheel and hub can be configured to provide enhanced stiffness, reduced aerodynamic drag, and reduced weight. For enhanced lateral stiffness, the bicycle wheel comprises a hub having a central body bounded by a first hub flange and a second hub flange. Each of the hub flanges includes a plurality of extensions protruding radially outward from the central body towards a wheel rim. The extensions extend at least one-fifth of the distance from the central body to the rim. A pair of spokes spans between each hub flange extension to the rim. The hub of drive side of a driven wheel may further include a reinforcing member such as a reinforcing ring to accommodate forces and loads imparted by a bicycle drive mechanism. For reduced drag while retaining sufficient lateral stiffness, the central body of the hub may be narrowed and the hub flanges correspondingly repositioned laterally inward.

A skeleton for the body of a shock vehicle is composed of bottom skeleton with integral protecting plate, front skeleton, top skeleton with a circular hole for installing a multipurpose rotary platform, and back skeleton. It uses the truss structure made of uniform-section tubes and has 6 rings for airborne and 4 lifting points.

The invention relates to the field of vehicle structures, and discloses an automobile door and an automobile. The automobile door comprises an automobile door frame, an automobile door panel, an upperhinge, a lower hinge, a connecting device and a motor; one end of the automobile door panel is hinged to one end of the upper hinge; the other end of the automobile door panel is hinged to one end ofthe lower hinge; the other end of the upper hinge is hinged to the automobile door frame; the motor is connected with the other end of the lower hinge through the connecting device and is used for driving the lower hinge to swing; the upper hinge, the lower hinge, the automobile door panel and the automobile door frame form a spatial parallel four-bar-linkage mechanism. Through the above mode, the motor drives the lower hinge to swing, due to the characteristics of the parallel four-bar-linkage mechanism, the upper hinge can wing along with the lower hinge, the automobile door panel swings towards the rear, when the automobile door panel arrives at the position with the largest opening degree, an upper falling port of the automobile door frame can be fully exposed, thereby providing convenience for passengers to get on or off.