The flapping of the blades compensates the dissymmetry
of the lift created by the blades. The blade going in the same direction as the relative wind has more speed , therefore more lift than the one going against the wind.
As the blades are on hinges the blade which has more lift can "flapp" upwards resulting in loss of surface ( as lift is also dependent of the surface) and thus balancing the lift on the rotor disk.
There are several types of kitchen cupboard hinges available, including concealed hinges, semi-concealed hinges, and surface-mounted hinges. Concealed hinges are hidden from view when the cabinet door is closed, while semi-concealed hinges show a portion of the hinge when the door is closed. Surface-mounted hinges are visible on the outside of the cabinet door.
Suicide doors would have the hinges mounted on the right side of the door if your looking at the drivers side, left side if your looking at the passengers side. Butterfly doors would have the hinges mounted on the top.
Inset hinges are installed inside the cabinet door frame, while overlay hinges are mounted on the outside of the frame. Inset hinges provide a cleaner look with the door flush against the cabinet, while overlay hinges allow the door to overlap the frame.
A door opens more slowly when pushed closer to the hinges because the force applied is farther away from the pivot point, making it harder to overcome the resistance of the hinges.
Overlay hinges are mounted on the outside of the cabinet door, allowing the door to overlay the cabinet frame. They provide a modern look and are easier to install. Inset hinges are mounted on the inside of the cabinet door, creating a flush appearance when the door is closed. They offer a more traditional look and require precise installation for a seamless finish. In terms of functionality, overlay hinges allow for more adjustment options, while inset hinges provide a cleaner and more streamlined look.
they are hinges, just unhinge them
Inset hinges are installed inside the cabinet door frame, while overlay hinges are mounted on the outside of the frame. This difference affects how the door opens and closes, as well as the overall appearance of the cabinet.
semi concealed cabinet hinges should be used if half the hinge is visible on the face frame and the other half is hidden behind cabinet door, surface mounted hinges are for the cabinets where the whole hinge is visible from the front of the cabinet, over lay hinges show the hinge pin from the front of the cabinet, and pivot hinges are for the pivoting cabinet doors.
I think the function of hinges in scissors would be holding the two opposite blades together for effective cutting. without the hinges, it will not be able to cut effectively.
To properly install hinges on cabinet doors, first, determine the type of hinge needed (e.g. concealed or surface-mounted). Next, mark the hinge placement on the door and cabinet frame. Use a drill to create pilot holes for the screws. Attach the hinges to the door and frame using the screws provided. Adjust the hinges for proper alignment and smooth operation of the door.
The different types of cabinet hinges available in the market include overlay hinges, inset hinges, concealed hinges, European hinges, and self-closing hinges.
A familiar example of what hinges do, are the hinges that are attached to a door.